Accessing .NET assemblies via eDeveloper - Webinar this Tuesday

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  - 1
    - Component constructors, is there another one ? In the Writing Components topic of Mr. Grimes' book on Managed C++, he states that if a component is ultimately derived from either MarshalByRefObject or MarshalByValueComponent, it should implement a second constructor which takes an IContainer in order to add itself to a component container. While I understand that components have containers, I have seen no documentation regarding a second constructor to a component. Does it really exist or is this an error in Mr. Grimes' nearly flawless technical writing. If this second constructor actually exists: 1) What container(s) creates a component calling this second constructor ? 2) Why does MarshalByRefObject or MarshalByValueComponent not have this second constructor which would automatically add itself to an IContainer derived object when a derived class calls down to one of these bases in its constructor ? 3) Where in the MSDN documentation is this second constructor documented ? Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69628
  - 2
    - Why does a call to a function in a dll take less time if you call it repeatedly? Could explain how the .net assemblies (Dlls) work when they are used by an exe -- I'd much appreciate it. If your exe is making a call to a function that's part of the .net framework library (ie System.Math.Ceiling), the amount of time taken up on the first call to the specific function is usually about 80-90% more than when the function is called again. Can someone explain to me why this works as it does? I know that when you use a Dll, it's got to get loaded into the system and map all of proc addresses for the functions into memory. On the first call, are these mapping of the function to a particular location in memory left blank and is the majority of time spent filling in these mappings? This brings up the question of whether there is a way to load the Dlls you're going to use for a certain EXE and set it up so everything is pre-cached? Is it possibly a setting for your project in Visual Studio.net? Apologies if this sounds vague but I'm not entirely familiar with this stuff just yet. Thanks, Justin Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69626
  - 3
    - Reflection, hiding private members? Is it possible to with some AssemblyInfo.cs directive to make the following nUnit tests to work [Test public void ReflectionStatic() MemberInfo[] privateStaticMembers = typeof(Complex).GetMembers(BindingFlags.NonPublic|BindingFlags.Static) Assert.AreEqual(0, privateStaticMembers.Length) [Test public void ReflectionNonStatic() MemberInfo[] privateNonStaticMembers = typeof(Complex).GetMembers(BindingFlags.NonPublic|BindingFlags.Instance) Assert.AreEqual(0, privateNonStaticMembers.Length) } Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69624
  - 4
    - Memory leakage while using ActiveX DLL I am struggling to figure out the cause of an out of memory exception I am getting involving the use of an ActiveX DLL. About three years ago, I developed an ActiveX DLL (called TFile.DLL below) using VB6, and have since then invoked it successfully in other VB6 ActiveX DLL projects. Last year, I developed a web service with VB.NET where I used this DLL too. The main code is in a web method, whose logic is basically like this: ___ Try ... TDocument = New TFile.TDocument mOraDynaset = CType(mOraDatabase.CreateDynaset(strQuery, dynOption.ORADYN_NOCACHE + dynOption.ORADYN_READONLY), OraDynaset) mOraDynaset.MoveFirst() Do While Not mOraDynaset.EOF TF = New TFile.TF With TF TDocument.A = ... ... TDocument.L = new TFile.L TDocument.L.L1 = ... ... End With TDocument.Write(TF) TF = Nothing mOraDynaset.MoveNext() Loop Catch ... _________ This web method code has been working great. Task aspnet_wp.exe does not show any sign of memory leakage. Now I have migrated this code to a .NET class library. The code structure has remained basically the same as shown above. However, during execution, there is a gradual leakage of memory eventually leading to an out-of-memory exception. I have placed Marshal.ReleaseComObject calls for all the COM objects, but they don't seem to help. Can anybody see any reason why this is happening and offer suggestions to eliminate the memory leakage? TIA. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69621
  - 5
    - Getting unprintable margin for a printer I'm trying to find a .Net way to get the unprintable margin for a printer. I know I could link to the SDK function GetDeviceCaps, but, I wanted to make sure there wasn't a cleaner way TIA Dave Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69620
  - 6
    - ASN.1 Encoding/Decoding in .NET? Hi, I'm developing an OCSP (Online Certificate Status Protocol) responder with the .NET framework and C#. The protocol for communication is defined in ASN.1 rules and DER used for encoding/decoding of requests and responses. Unfortunately, I was not able to find any class libraries for encoding and decoding of DER messages in the .NET Framework. I checked the CryptoAPI library, but there are only routines for encoding/decoding of x509 certificates or PKCS#7 requests. Probably I'll need a multi-purpose ASN.1 routines. Any idea? Best Regards, - Nikola Kasev. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69619
  - 7
    - Reading hardware information from the remote system (WIN 98) H i am reading hardware information from the remote system My system has windows 2000 but the remote system has windows 9 i get Access denied problem how do i solve this problem My code is like this ... If txtUserName.Text.Trim.Length > 0 The Dim objLocator As Object = CreateObject("WbemScripting.SWbemLocator" objWMIService = objLocator.ConnectServer(txtSystemName.Text.Trim, "root\cimv2", txtUserName.Text.Trim, txtPassword.Text.Trim objWMIService.Security_.ImpersonationLevel = Els objWMIService = GetObject("winmgmts:" & "{authenticationLevel=Pkt}!\\" & txtSystemName.Text.Trim & "\root\cimv2" End If Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69618
  - 8
    - Sending SMS SMPPLIB 1.4 http://www.protonsystem.com/smpplib.htm Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69617
  - 9
    - how to keep toolbar and menu common? Hi al When I used to do programming in Visual C++, I used to put my menu in CMainFrame, so I just had to write code for each of the menu items ONCE. As for the CView (actually I used to use CFormView), I dynamically create a new object of the CMyFormView (derived from CFormView) and make it appear on my main window So as a result, all my windows REPLACE the original blank CView area How can I do this in C#? .ShowDialog () just brings up a popup. Of course I can again display hte toolbar and menu there, but I don't want to repeat code Thanks. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69616
  - 10
    - Component and Container In the Writing Components topic of Mr. Grimes' book on Managed C++, he states that if a component is ultimately derived from either MarshalByRefObject or MarshalByValueComponent, it should implement a second constructor which takes an IContainer in order to add itself to a component container. I have a few questions regarding this: 1) What container creates a component calling this second constructor ? 2) Why does MarshalByRefObject or MarshalByValueComponent not have this second constructor which would automatically add itself to an IContainer derived object when a derived class calls down to one of these bases in its constructor ? 3) Where in the MSDN documentation is this second constructor documented ? Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69613
  - 11
    - HOWTO: Convert a string in scientific format to a decimal Hi, How to convert "1283912839E-5" string (in scientific format) to a decimal. Convert.ToDecimal("1283912839E-5") is throwing "Input string is not in correct format" exception. Is the exponential format not supported during conversion? I think we need to use NumberFormatInfo, but dont know how to use the format specifiers in the NumberFormatInfo. Thanks in advance. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69610
  - 12
    - A RegEx question Hi, Can some kind RegEx guru give me some help? I want to parse an expression of the form: EXECUTE func [param [,param...]] In other words, the expression begins with "PARAM" followed by whitespace and func, optionally followed by whitespace and one or more comma-delimited parameters (where the first parameter is not preceded by a comma). My question is, how do I construct a RegEx expression and evaluate it so that I can iterate through the zero or more "param" strings contained in the expression? Thanks! - Bob Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69605
  - 13
    - Mac OS support Hello, I need to know that .NET Framework has Mac OS support. As someone of my application needs to run on Mac OS. Thanks. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69603
  - 14
    - Clipboard I need to copy the contents of a ListBox control to the clipboard. How do I do that in .NET Thanks. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69601
  - 15
    - file not being released in a timely manner I've written a vb.net webform based application. It uses CDO and it runs through a list of database records and for each record, it creates a new email object, attaches a single file, and then sends the message. I use message.AddAttachment(AttachedFile) to attach the file. After I've sent the message I copy the the file that was attached to the message to a backup directory. I then delete the file. The copy is instantaneous. However, it can take quite some time before the file is actually deleted. It varies between a couple of seconds and more then a few minutes. If I close the application, the file disappears within a few seconds. I believe that the email object is holding onto the file until Garbage Collection completely reclaims the email object. I've added GC.Collect right after the email is sent and after I've set the email to nothing. It speeds up the deletion but not in a predictable manner. What's the best approach to speeding up the reclamation of the email object so that it releases the hold on the file? Do I have to take into account that the email object is created using CDO? Is the CDO library considered unmanaged and if it is does that complicate the disposal of the email object? Thank You, Eric Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69599
  - 16
    - ANN: Galois.Net Hi, I have posted recently a similar message, I believe it is particularly interesting for people with a mathematical background. Also, the whole application was developed with .Net Framework SDK only. The beta version of Galois.Net is now available for download. Galois.Net is made of two parts: the Galois Knowledge Environment and a collection of Xml tags. The Environment is used to create and share theories presented using the Xml tags. You can download it at: http://www.a2ii.com/galois/index.htm More information about Galois.Net can be found below. Daniel Perron, Ph.D. Lead Developer Galois.Net ========================================================= XML specifications for .Net components The Visual C# compiler has an option switch that extracts the comments within the source code of the program being written if the comments follow a certain XML syntax. This simplifies the generation of reference documentation for the application. Java compilers also have such a facility and we can probably trace the original idea behind such a feature to the proposal for Literate Programming made by Donald Knuth in the 80's. In this note, we would like to extend these ideas using custom attributes provided by the .Net Framework. We'll start by defining a custom attribute named Galois as follows: using System; namespace Galois { [AttributeUsage( AttributeTargets.All, AllowMultiple = true )] public class GaloisAttribute : Attribute { string theory; public string Theory { get { return theory; } set { theory = value; } } public GaloisAttribute( string thm ) { theory = thm; } } } We have created a namespace for this attribute and the attribute itself has only one read-write property Theory of type System.String. You can compile this code and reference it in your application. The Theory property of every Galois attributes will be an XML string with tags chosen to allow specifications in a certain logic, namely geometric logic. Geometry logic has nice mathematical properties (the class of models of a given theory constitutes what mathematicians call a topos). For example, we would like to attach a Galois attribute to an interface that will be used in every Windows.Forms program that use a menu as follow: using Galois; public interface GTMenu { [Galois(@" <co a1='p' t1='Program' a2='m' t2='Menu' a3='s0' t3='Statement' a4='s1' t4='Statement' a5='s2' t5='Statement' > <if><pr n='Uses' a1='p' a2='m'/> </if> <tn><te a1='a' t1='Array'><pr n='ElementType' a1='a' a2='Statement'/></te> <pr n='GetValue' a1='a' a2='0' a3='s0'/> <pr n='Equals' a1='s0' a2='MainMenu.ctor'/> <pr n='GetValue' a1='a' a2='1' a3='s1'/> <pr n='Equals' a1='s1' a2='MenuItem.ctor'/> <pr n='GetValue' a1='a' a2='2' a3='s2'/> <pr n='Equals' a1='s2' a2='AddEventHandlerForClick'/> </tn> </co> ")] void SetupMenu(); } Let's look at the interface itself first. The interface is named GTMenu (for the Galois Theory of Menu) and it contains only one method SetupMenu() (note also, the "using" statement at the beginning to be allowed to use Galois custom attributes). The Galois attribute itself is attached to the method SetupMenu of the interface. The string that is passed to the attribute starts with the @ sign so we can break the specifications on multiple lines and we use ' (a single quote) inside the string to delimitate the XML attributes of the Galois.Net elements that we are now going to describe. The top-level element of the XML string is <co a1 ...>. The "co" element of a Galois attribute defines a context which is a list of variables names and theirs types (as in a1='p' t1='Program' for the variable p of type Program). Inside this context element, we have an "if" element for the "if" part of a rule and "tn" element for the "then" part of a rule. Galois.Net specifications are made up of contexts that define the variables used in the rules. Inside the "if" element or the "tn" element we can have relations (or predicates). In the specification above, we have inside the "if" element, the relation Uses which is written as the element "<pr n='Uses' a1='p' a2='m'/>" which says that "if the program uses a menu then ...". Then what? The specification says that there exists an array of statements whose first member is a MainMenu constructor, second member is a MenuItem constructor and the third member is the statement 'AddEventHandlerForClick'. The "te" element states that "there exists" a variable of type Array. The specification also uses the predicates "GetValue" which is true if the value of the object at position, say 0, is s0. Galois.Net specifications treat a function as a relation that defines its graph. And if the function is a method then its first argument will be the name of the given object (just like when the pointer "this" is passed to a function in a given implementation of a compiler for an object-oriented programming language). This specification can be displayed (in the Galois Knowledge Environment) as follow: Context: For All p: Program, m: Menu, s0: Statement, s1: Statement, s2: Statement, IF (rule #1) Uses( p, m ) THEN THERE EXISTS a: Array ElementType( a, Statement ) GetValue( a, 0, s0 ) Equals( s0, MainMenu.ctor ) GetValue( a, 1, s1 ) Equals( s1, MenuItem.ctor ) GetValue( a, 2, s2 ) Equals( s2, AddEventHandlerForClick ) We can conclude that this context defines a language with: 4 sorts (Program, Menu, Statement, Array) 3 predicates (Uses,ElementType, GetValue) where Uses < Program x Menu (we use < for the subset relation) ElementType < Array x string GetValue < Array x int x Statement the constants 0, 1, 2, MainMenu.ctor, MenuItem.ctor, AddEvenHandlerForClick, and a geometric theory with a single axiom. Any interpretation (or model) of this geometric theory will involve assigning "universes" for the different sorts. Usually these universes are just plain sets, but generally, they can be taken to be objects in any given topos. Then the predicates will be subsets of the appropriate product of sorts and the constants are elements of the sets that represent the given sorts. The values for the statements in the above specification i.e. MainMenu.ctor, ... were chosen to reflect the knowledge that would be needed to implement a menu in a Windows.Forms application. A program that implements the GTMenu interface with its Galois attribute could be written as (when compiling, remember to add a reference to GTMenu.dll compiled earlier): using System; using System.Drawing; using System.Windows.Forms; class CreativeGL : Form, GTMenu { public void SetupMenu() { Menu = new MainMenu(); MenuItem menu = new MenuItem( "A menu" ); Menu.MenuItems.Add( menu ); MenuItem miOne = new MenuItem( "One Item" ); menu.MenuItems.Add( miOne ); miOne.Click += new EventHandler( miOneHandler ); } public CreativeGL() { SetupMenu(); } public void miOneHandler( object o, EventArgs ea ) { MessageBox.Show( "You clicked the menu item" ); } public static void Main() { Application.Run( new CreativeGL() ); } } This is just a test program but it shows an important idea: A program can be seen as a model for the theory specified in the Galois attribute (of the interface that is implemented by the program). A more detailed specification makes it easier to associate values to symbols in the specification i.e. to define a model. Because the tags of the Galois attributes were chosen to express specifications in geometric logic these remarks can be made formal. As a simple consequence of this formal theory, a "bug" has a nice interpretation in this setting: since a rule in a Galois specification essentially represents the claim that an abstract geometric object is contained in another one, a bug is a point of the smaller object which is not covered by the "bigger" one. Creating components with Galois attributes wouldn't be very interesting if we were not going to exploit this extra information contained in the specification. Luckily, the .Net Framework makes it very easy to extract custom attributes from components. The Galois attribute used above was written to express the minimum information needed to create a Windows.Forms with a menu (we could make it more precise to include the information that we need to add the menu item to its container). Similarly, the same approach could be used to express the minimum information needed to created a client network application, a server network applicaton etc... And more generally, we can use Galois specifications to make explicit the information that programmers assumed when they are writing their code. This way, we could extract all the theories contained in all the code written by a given programmer and treat this as a representation of his/her expertise. Going one step further, we can imagine a programmer displaying this representation in the form of a Web service that is used to "contract out" this expertise. We believe that custom attributes, as used with Galois.Net to specify components, fill an important gap in providing a nice semantic for component-based software development. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69597
  - 17
    - Assemblies for custom component not loading Hi all, I've got a solution containing several projects for some components I'm trying to develop: A, B, C A inherits from System.ComponentModel.Component. Its purpose is to house some base functionality for my suite. B inherits directly from A and does it own thing. Likewise C is a more specialized component of type B, so it's inheriting straight from B. Compilation goes fine and all three resultant dll's are in C's bin\debug folder. So we have A.dll, B.dll and C.dll all in the same folder. I then added a registry key for the AssemblyFolders key with this output as the default value for the key. Reopen vs.net and my components (all called Class1), are showing up in the ".Net Components" box when you click the Add/Remove context menu. I put C on the toolbox.. drag and drop it on the form and nothing is placed on the component tray. I used fuslogvw to log assembly binding and got entries for A and B: *** Assembly Binder Log Entry (2/19/2004 @ 4:03:27 PM) *** The operation failed. Bind result: hr = 0x80070002. The system cannot find the file specified. Assembly manager loaded from: C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\fusion.dll Running under executable C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\IDE\devenv.exe --- A detailed error log follows. === Pre-bind state information === LOG: DisplayName = A, Version=1.0.1510.28187, Culture=neutral, PublicKeyToken=null (Fully-specified) LOG: Appbase = C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\IDE\ LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = NULL Calling assembly : (Unknown). === LOG: Processing DEVPATH. LOG: DEVPATH is not set. Falling through to regular bind. LOG: Private path hint found in configuration file: PublicAssemblies;PrivateAssemblies. LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind). LOG: Post-policy reference: A, Version=1.0.1510.28187, Culture=neutral, PublicKeyToken=null LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/A.DLL. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/A/A.DLL. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PublicAssemblies/A.DLL. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PublicAssemblies/A/A.DLL. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PrivateAssemblies/A.DLL. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PrivateAssemblies/A/A.DLL. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/A.EXE. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/A/A.EXE. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PublicAssemblies/A.EXE. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PublicAssemblies/A/A.EXE. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PrivateAssemblies/A.EXE. LOG: Attempting download of new URL file:///C:/Program Files/Microsoft Visual Studio .NET 2003/Common7/IDE/PrivateAssemblies/A/A.EXE. LOG: All probing URLs attempted and failed. B's failure log is the same as A's except for the name it looks for. Can anyone shed some light on my problem or tell me something else to try? Fred Palmer fred@codesoldier.com Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69596
  - 18
    - WSDL generates array rather than data type In generating a proxy using WSDL, a collection type I have defined is transformed into a simple array. This later causes data to not be passed correctly in the web service client. Here's a partial example: <xs:complexType name="MyResponse"> <xs:sequence> <xs:element name="MyList" type="MyList" minOccurs="0"/> <xs:element name="OtherData" type="xs:string" minOccurs="0"/> </xs:sequence> </xs:complexType> <xs:complexType name="MyList"> <xs:sequence> <xs:element name="MyListDetail" type="MyListDetail" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="MyListDetail"> <xs:sequence> <xs:element name="DetailId" type="xs:string" minOccurs="0"/> <xs:element name="DetailDescription" type="xs:string" minOccurs="0"/> </xs:sequence> </xs:complexType> The pertinent generated C# code looks like: [System.Xml.Serialization.XmlTypeAttribute(Namespace="xxxxx")] public class MyResponse { /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form=System.Xml.Schema.XmlSchemaForm.Unqualified)] public MyListDetail[] MyList; Note that the generated .cs code types MyList as simply an array of MyListDetail objects rather than typing it as a MyList object. This seems to cause a problem where the data put into the MyListDetail objects do not appear on the client side after calling the web service. If a "dummy" element is added to the MyList definition, the actual MyList data type is generated, and the data passed in the MyListDetail objects are passed back to the client as expected: <xs:complexType name="MyList"> <xs:sequence> <xs:element name="dummy" type="xs:string" minOccurs="0"/> <xs:element name="MyListDetail" type="MyListDetail" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> [System.Xml.Serialization.XmlTypeAttribute(Namespace="xxxxx")] public class MyResponse { ... /// <remarks/> [System.Xml.Serialization.XmlElementAttribute(Form=System.Xml.Schema.XmlSchemaForm.Unqualified)] public MyList MyList; ... Is this some kind of optimization "feature" of WSDL, or are we doing something incorrectly? Thanks! Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69595
  - 19
    - Reference objects and simultaneous calls Hi: I'm not too clear on how method calls are handled by referenced objects. If an object is referenced in two different places and a call to the same method is called by both relatively quickly, are different threads spawn for each caller's method call, or is it a single thread? thanks for info in advance Steve Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69592
  - 20
    - Publish WMI instances from W32 service consumes memory without stop Hello to all, I'm developing a Win32 .Net service that publishes information into WMI by using Publish method, however once an instance is published, memory usage starts to grow without stop at a rate of 1Kb/sec. This problem only appears when publishing information through a service. Also I noticed that problem only appears on some machines (most of them) since a couple of my machines does not present the problem. Is there a way to solve this problem? I'll try to create a native provider and call it from the service but I prefer to use .Net and not to mix managed and not managed code. Best Regards, Oscar Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69589
  - 21
    - Asynchronous event firing Hi: I was curious whether events fired as a multi-cast delegate were fired asynchronously or not. If the invoked delegate is OneWay, do I need to call GetInvocationList() (I think that's the name) and fire each one asynchronously to take advantage of the OneWay delegate, or will firing the event with one call do that for me? Thanks in advance for any help in this question. Steve Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69581
  - 22
    - Help: Placing Internet Shortcut for Windows Forms application (hosted on web server) on Desktop Hi there, I have a Windows forms app that resides on a web server. I (and my intended user base) access the application via an Internet shortcut, i.e. "http://servername/appshare/app.exe". That's all fine and dandy, as well as the setup and deployment project I had to write to install/uninstall a Site code group to give FullTrust to any applications from "servername", but that's another story (code's available if anyone's interested). So, one last thing I wish to do: During the install, create an Internet Shortcut on the desktop which points at "http://servername/appshare/app.exe". As far as I can see, there's no way to create an *internet* shortcut during the install process or via code - does anyone have any suggestions? Kind regards, Mike Kingscott Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69576
  - 23
    - Managed extension is turned off automatically !! Hello Programmers, I have C++ unmanaged projects with managed extension turned on. They are compiling fine in developer computer. In the build computer, a single solution contains C#, .Net C++, C++ unmanaged and C++ unmanaged with managed extension turned on. But we are getting build errors for the "C++ unmanaged projects with managed extensions On". These errors are the same as what would be when the managed extension is turned off by accident in these projects. I have get local copy to TRUE, in the add references in all these projects. The managed project these unmanaged projects are trying to access is written in C++.Net. Any idea on how this could be?? .. Is this a bug .. any workaround ?? Help will be really appreciated. ~Saurabh Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69574
  - 24
    - DTD to xml I'd like to use 'xsd.exe' to generate a set of classes so that I can serialize XML for a given DTD However, I don't believe 'xsd.exe' reads DTD's. So is there an easy way to conver a DTD to an XML schema, or go directly from a DTD to a .NET code base that ca be serialized Thanks Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69568
  - 25
    - new namespaces in whidbey Hi there, I'm looking for a short list (with description!) of the new namespaces in the .NET framework 2.0. Thanks, Urs Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69566
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    - Parameter Description in Code Completion I have a couple of helper class libraries that I use in several projects. Does anyone know how to create the parameter description that appears below the parameter autocomplete popup when a method in the helper class is being used in Visual Studio? Is there a meta tag for this? At the moment the parameter list appears the yellow popup window but no parameter description is displayed below. Any tips greatly apprecated. Tony Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69563
  - 2
    - Dynamic menus - Collapsing and Expanding Hello All, I need to create a menu list on a page that will expand when clicked and stay expanded until clicked again. Actually, I want it to look just like the menus on the Microsoft Newsgroup homepage - with a plus sign to expand and a minus sign to collapse the menu. Also, I want to be able to add new sub-menu items in a single place (some kind of admin interface) and have them instantly be available when the parent menu is expanded. Does anyone have any ideas on how to make this a reality? Help greatly appreciated. Thank you, Benno Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69560
  - 3
    - Passing parameters to new AppDomain Hello, Is there a way to pass some data to domain created by AppDomain.CreateDomain so they will be available for custom configuration section handlers? As I can understand the custom handlers are invoked on first access to configuration section (i.e. not inside CreateDomain) so I can call newDomain.SetData() to pass parameters and then creates objects. Can I rely on such behavior of handlers in nearest future version of .NET framework? -- Best regards, Vladimir Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69555
  - 4
    - IPAddress.Address is negative Hello, I perform a ping using the IcmpSendEcho Function from iphlpapi: <DllImport("iphlpapi")> _ Private Shared Function IcmpSendEcho(ByVal IcmpHandle As IntPtr, ByVal DestinationAddress As System.UInt32, ByVal RequestData() As Byte, ByVal RequestSize As Integer, ByVal RequestOptions As IntPtr, ByVal ReplyBuffer() As Byte, ByVal ReplySize As Int32, ByVal Timeout As Int32) As System.UInt32 This Function requires a Destination Adress as an unsigned Int32. I get it from the IPAddress.Address Object. Public Structure PingOptions Dim IPAdress As IPAddress Dim TimeOUT As Integer End Structure dim opt as PingOptions opt.IPAdress = IPAddress.Parse("192.168.1.128") ' Adresses bigger then A.B.C.127, have a negative adress value !!! ipaddr = System.UInt32.Parse(opt.IPAdress.Address) ' and couse exception here Dim ret As System.UInt32 'but i need an unsigned int here in the second parameter ret = IcmpSendEcho(h, opt.ipaddr, RequestData, CInt(RequestData.Length), IntPtr.Zero, reply._Data, reply._Data.Length, opt.TimeOUT) The Problem is that for IPAdresses, where the last Byte is bigger then 127. the generated Long Value for Adress is negative and the Parse Method to the uint32 couses an exception. Or should i declare the DestinationAdress as Long in the IcmpSendEcho and put in IPAdress.Address value directly. My assumption is that the Address value is created in the correct bitformat but becouse the CF is declaring it as a long it is interpreted negative. Or how else to get the correct Long Value from IPAdress.Address ? THX in advance -- -> Milosz Weckowski www.playseven.com mailto:mw@playseven.com ICQ Number: 84867613 Get the enhanced Progressbar and a fine Colorpicker for the Compact Framwork for free: http://www.playseven.com/11620/p7_Controls.html Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69553
  - 5
    - IMAP Hi We are currently using an IMAP server setup on Unix Does anyone know if there is a Windows vesion pf IMAP? Links Is the version of IMAP for Widnows a different API. I just want to be sure that my code will still work and that the API is not different Thanks C. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69552
  - 6
    - CreateWindowStation Does anyone have the vb code to use this function I have found the API import for this but not the layout of the structures that need to be passed to the routine. I'm also looking for vb versions of - CreateWindowStation - SetProcessWindowStation - CreateDesktop - SetThreadDesktop - GetGUIThreadInfo Any help would be great. VB.NET please. Thanks P :-) Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69549
  - 7
    - Activating an instance of a class in a referenced assembly I'm trying to use Type.GetType() so I can create an instance of a class I have defined in a different, yet referenced, assembly but it doesn't seem to be able to find the type. How can I get a type object of a class in another assembly? For example, if you reference the System.Xml namespace, try this Type importType = Type.GetType("System.Xml.XmlException", true); It will throw an exception. I see that there is also the GetTypeFromProgID() and GetTypeFromCLSID() methods in the Type class but these seem to only apply to registered COM objects. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69548
  - 8
    - RESPONSE ISSUE WE HAVE FACED A RESPONSE PROBLEM WITH .NET APPLICATION WITH WINDOWS 2000 SP 2 AND SP4. WITH SP2 SYSTEM LOADS FASTER AND WORK FASTER. WITH SP4 RESPONSE IS SLOW. IS THERE ANY PATCH AVAILABLE OR ANY OTHER SOLUTION FOR THE SAME Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69543
  - 9
    - Smart Client Hi I want create and test a sample Smart client application. I created form with one button control and posted the executable to a Virtual directory. When I tried to access the exec from Internet explorer, I didn't see the form opening up. The browser is blank. Is there any settings I have to make to run the executable from Web server. My OS is XP-Professional and I am using VS.net 2003 version . Regards, Butchi Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69541
  - 10
    - HKEY_LOCAL_MACHINE - Setting Read Only Permissions I have a .NET winforms application that requires read access to a custom key stored in HLM. Installation of application will create a key in HLM programmatically. This is no problem since only admins will be performing install. However, the application will be run by non-admins. The key created will require read only access for these non-admin users. Is there a way to programmatically set permissions to the key? I'd like to prevent having to go into regedt32 to set the permissions for every desktop running the application. I've tried several of the coding examples in the RegistryPermissions class with no luck. I'm certain it is because I am not correctly using the class or I am using the incorrect class. Any tips would be greatly appreciated. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69538
  - 11
    - Process.Start & MailTo In my Windows Form application I'm using the attached code, to launch the default email client. When the value of the FileName property exceeds 2001 characters, a Win32Exception is thrown with the message "The System cannot find the file specified". We're likely to have cases where the message will exceed 2001 characters. We've also tried SMTP (SmtpMail.Send(mmMailMsg)) and it works fine with the same message. Any suggestions Public Sub SendEMail( Tr Dim strMsg As String = "A very long msg. Dim psi As New System.Diagnostics.ProcessStartInf psi.FileName = "mailto:myEmail@myAddress.com?subject=Hello&Body=" & strMs psi.UseShellExecute = Tru System.Diagnostics.Process.Start(psi Catch excGeneric As Exceptio MessageBox.Show("Exception in Sub SendEMail: " & excGeneric.ToString End Tr End Su Thanks Norm Dott normd@knorrassociates.com Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69534
  - 12
    - COM Class Vs. Sn.exe, Gacutil.exe and Regasm.exe There seems to be two ways of creating a COM in .NET 1) Select the COM Class template 2) Create a class and then use Sn.exe, Gacutil.exe, and Regasm.exe to assign the assembly to GAC and COM to registry I know that COM Class option is a lot easier to use. However, is there any drawbacks from using this instead of option two? Is it suggested that you rather use option 2) even it's a lot more tedious Thanks for info. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69532
  - 13
    - Problem with Trust for User I built an assembly and generated a test strong name key pair with sn.exe. The assembly runs fine and is installed in the GAC and also as a COM+ Server Application. I ran the 1.1 Framework Config Tool to trust the assembly. I selected "Make Changes for this User Only", navigated to the .DLL, said to trust this assembly only, and got this error: "Due to your existing security policy, the wizard is unabel to increase the level of trust for this assembly. No changes were made to your policy." How can I make my user account trust my assembly? Thanks. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69531
  - 14
    - Should I drop Library activated Serviced Component from COM+ when the interface changes? I would like to understand better what happens when a public interface of a serviced component changes Suppose that I have a library activated serviced component. Suppose that I lock its version number ([assembly: AssemblyVersion("1.0.0")]) and installed the component into COM+ catalog (via regsvcs or just by running a client that uses it) Now, suppose that I change the existing method or add a new method in the component It appears that everything continues to run fine afer the change I am not sure, though, if this is the way to do it. I always drop the component from COM+ catalog when the interface changes Question is, do I need to? Is it really necessary What exactly is going on with component when the interface changes Thanks -Sta Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69528
  - 15
    - TOP SECRET MY MOM NEVER TOLD ME!! Discovers the "Secret of making huge money" in just few weeks.... You shall be amazed that how easy 1 can make money on internet just for doing 1 time work..[I GUREENTED U CAN TOO MAKE BIG$$ WITH THIS PROGRAM]........ [Use IE if can't view the site] http://mysiteinc.com/gohar/index.html Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69527
  - 16
    - What is "Unable to write data to transport connection"? All, What does it mean "Unable to write data to transport connection"? I got this error when I called HttpWebRequest.GetResponse(). Thanks, Rudy Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69526
  - 17
    - Curious: Why use XPathNavigator Class over XMLDocument Class? Any opinions on the best way to load, select nodes (anywhere in the tree), manipulate those nodes, and save the changes? Any reason I should change from just straight up manipulating the XMLDocument and use the XPathNavigator class? Is the performance is better then using the XMLDocument class to perform XPath queries? What is the most efficient method of manipulating and saving data changes? Cheers, -- Curious. Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69524
  - 18
    - Deleting Mulitple Rows Hi, I want to delete multiple records/rows from a dataset for eg: DataSet.tables(0).rows("Some Counter").delete() will delete one row. what if I have to delete more than one row... Thanks, Stephen Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69522
  - 19
    - "Assert failed" under Windows 98 Hi, I've developped a Window Form application with .NET that runs perfectly well under Windows 2000, XP and 2003. However, when i run it under Windows 98SE, i get the following error *after* the application has been closed (MyApp is the name of my executable): "Assert failed - copied to MyApp.err" File Refcount.cpp, line 652 Build: v7.10 (07/08/02 11:27:29) Expression: ! (i == idata->tdmap.end()) The strange thing is that it doesn't happens when my code is executing but sometime after the execution is finished, probably somewhere in the framework itself when it's cleaning up after a program has been closed. If somebody has a clue of what's happening here, please help! i have no idea where to look as the error comes from outside my code:-( And this just prevents me from distributing my application to Windows 98 users which was one of my targeted platform. Thanks Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69517
  - 20
    - copy file to SQL sever db HELP how do you copy a file from a folder into a part of SQL server database any sample code for VB .NE ti PT Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69516
  - 21
    - Have a different pagesize for the first page in a datagrid Hi All, I have a datagrid in which there are say 300 records to be displayed. I want to display only 10 records in the first page and from the second page on I want to display a fixed number say 40 records per page. Can anyone tell what is the best method to do this. Thanks Raj Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69515
  - 22
    - Cannot access properties on Custom classes After upgrading to the 1.1 framework, we can no longer access properties or methods on custom classes. The same classes in the 1.0 framework could be viewed just fine using the Quick Watch or Immediate window. The only thing that can be seen on the classes are the Public Constants (strings) In the immediate window, when trying to view the value of properties the following exceptions occu ?object.PropertyGUID.ToStrin Run-time exception thrown : System.ArgumentException - Cannot find the method on the object instance ?object.PropertyStrin <error: an exception of type: {System.ArgumentException} occurred Using QuickWatch, the Value column of the view shows the properties as <error: an exception of type: {System.ArgumentException} occurred>. There are no problems using the properties within code, only when attempting to view them for debugging purposes Many thanks in advance! Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69512
  - 23
    - =?Utf-8?Q?Can=E2=80=99t_copy_to_clipboard?= I get the following exception when I try to put a string in the clipboard Unhandled Exception: System.Runtime.InteropServices.ExternalException: The requested clipboard operation failed at System.Windows.Forms.Clipboard.SetDataObject(Object data, Boolean copy Could anyone tell me whatâ??s wrong with this program? Thank using System.Windows.Forms public class Tes public static void Main( Clipboard.SetDataObject("test", true) Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69510
  - 24
    - CCW overheads To whom it may concern: We are in the process of deciding on a technology to go with - .NET or VB6. The project entails interfacing with Classic COM objects written in C++ on another system. I've suggested that we write our custom code using the .NET framework and expose it to the classic COM objects using COM Callable Wrapper. Others suggest that we should go with VB6 (Classic COM to COM communications)so as to circumvent any form of overhead that could be incurred during the CCWs "wrapping" process. Any form of feedback is much appreciated. Best, Jack Sparrow Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69508
  - 25
    - XmlSerializer / Temp directory / System shutdown My application has a settings class that is serialized to save and deserialized to load. I'm having a problem where i catch the WM_QUERYENDSESSION event via WinProc to save my application's settings when a user logs out, reboots or shuts down the system. The behavior of XmlSerializer is that it creates temporary dll's to do the (de)serialization in the system's temp directory. The behavior of windows on a system shutdown is to purge these temporary files from the system's temp directory. The problem i'm having is that i am unable to serialize my settings class when the system is shutting down, because windows is purging these temporary files. Is there a way to control the directory where the XmlSerializer creates the temporary files (other than changing the TEMP environmental variable, which isn't an option for me), or is there another means of serialization i can use which bypasses the temporary file creation step? My settings class has hundreds (potentially thousands) of things getting saved to a file. Manually serializing/deserializing would be a real pain that i am hoping i can avoid. This seems to be a big flaw in the .net xmlserialization implementation. :( Tag: Accessing .NET assemblies via eDeveloper - Webinar this Tuesday Tag: 69507

Magic Software invites you to join us this coming Tuesday (February
24th, 2004) at 12:00 EDT / 17:00 GMT for a FREE
live Webinar:

Accessing .NET assemblies via eDeveloper

Title: Accessing .NET assemblies via eDeveloper
Date: February 24, 2004
Time: 12:00 PM EST / 17:00 GMT

Presenter: Ofer Spiegel

Description:

Learn how to access .NET assemblies from any eDeveloper application
using the .NET COM interoperability.

In this Webinar you will get to follow the steps required for exposing
a .Net assembly as a COM object and access it
using the eDeveloper COM objects integration.

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