Problem with the navigation in a tree view menu

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  - 1
    - ListView Questions After i populate a listview how can i manually selected an item. *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Problem with the navigation in a tree view menu Tag: 53424
  - 2
    - Performance issue: integrating WinForm app with legacy COM DLLs We've noticed that invocations of legacy C++ COM DLLs from .NET (Managed C++ or C#) desktop applications is quite a bit slower than the same calls from good old native C++. Does anybody have specific information about why this would be the case? How about performance numbers, benchmarks, etc? Any suggestions to speed up the connection between new .NET code and legacy C++? Thanks for your help - Steve Tag: Problem with the navigation in a tree view menu Tag: 53417
  - 3
    - 2nd Repost: Problem Retrieving DataSet Returned By A WebService... anyone from Microsoft or anyone with solution? Hi, I'm working on a project which includes WebServices and Windows Form application. The Windows Form application will call the WebServices to retrieve data from database. The data will be returned as DataSet. Now, here's the problem. On .NET Framework 1.1, if any rows in the dataset returned contain errors (marked by calling the SetColumnError() method or setting the RowError property of the DataRow), I get the following error message in the Windows Form application, "There is an error in XML doument (1,xxxxxxx)" If I forced the Windows Form application to run on .NET Framework 1.0, everything works fine. Is this a bug? Or I need to make some code adjustment because of changes to the Framework? Here's the partial code for the WebService project Code: <WebMethod()> _ Public Function RetrieveDataSet() As DataSet Dim ds As New DataSet Dim dt As New DataTable Dim row As DataRow Dim i As Integer dt.TableName = "TestTable" dt.Columns.Add("TestColumn1", GetType(String)) dt.Columns.Add("TestColumn2", GetType(Integer)) ds.DataSetName = "TestDataSet" ds.Tables.Add(dt) For i = 0 To 10 row = dt.NewRow row("TestColumn1") = "This is row " & i row("TestColumn2") = i dt.Rows.Add(row) ' The following code trigger the error after the DataSet ' is returned to the calling Window Form application row.SetColumnError("TestColumn1", "Error message here") Next Return ds End Function For the Windows Form application, you need to insert a datagrid control (assumed as datagrid1). It will look something like this, Code: Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim ws As localhost.Service1 Dim ds As DataSet Try ws = New localhost.Service1 ds = ws.RetrieveDataSet Me.DataGrid1.SetDataBinding(ds.Tables(0), "") Catch ex As Exception MsgBox(ex.Message) Finally If (Not (ws Is Nothing)) Then ws.Dispose() End If End Try End Sub I really hope someone could help me out with this one. Thanks in advance. ps: Please, before anyone reply to state that I did not choose the appropriate groups when making this post a crossposts post, please know that I'm currently in blind on what is causing this error. Is it the WebService? or is it the ADO .Net? or is it Windows Form application? or is it VB .Net? Well, it has something to do with WebService as it only happens to the DataSet returned by WebService. It also has something to do with ADO .Net as I'm using DataSet. And it definitely has something to do with Windows Form application as if I force the Windows Form application project to run on .Net Framework 1.0, everything works fine. Tag: Problem with the navigation in a tree view menu Tag: 53416
  - 4
    - override DataGrid.BeginInit () I need to override DataGrid.BeginInit() (and DataGrid.EndInit()). They are inherited from the interface ISupportsInitialize. Here's how the documentation declares BeginInit: public virtual void BeginInit(); But when the following code: public class MyDataGrid : DataGrid { public override void BeginInit () {} } produces this compiler error: 'MyDataGrid.BeginInit()' : cannot override inherited member 'System.Windows.Forms.DataGrid.BeginInit()' because it is not marked virtual, abstract, or override What am I missing? Thanks! Kristin Tag: Problem with the navigation in a tree view menu Tag: 53414
  - 5
    - Delete Datgrid's Last Row, Click on the grid again, Get the Exception. Hi All, I am using a custom collection (inherits collection base) and set it as the datasource of the Datagrid. Everything works great except when I delete the last row. WHEN I CLICK ON LAST ROW ON THE GRID IT GIVES THE FOLLOWING ERROR : "An UNHANDLED exception has occured in your application.If U click Continue ,the application will ignore the error and attempt to continue. If u click quit , the application will be shut down immediately. Index was outside the bounds of the array!." The title of the messagebox is 'error when committing the row to the original datastore'. Im wondering how its going to commit the row to the original datastore when its a custom collection of software objects??? THE BUG happens EXCATLY when I delete the LAST ROW in the grid then try to click anywhere in the grid!. private void btnDeleteReference_Click(object sender, System.EventArgs e) { if(referenceCollection.Count>0) { if(dgReferences.CurrentRowIndex >=0) { referenceCollection.RemoveReferenceAt(dgReferences.CurrentRowIndex,App.Connection ); //dgReferences.CurrentRowIndex=0; dgReferences.DataSource = null; dgReferences.DataSource = referenceCollection; dgReferences.Refresh(); //int i= referenceCollection.Count-1; try { this.dgReferences.CurrentRowIndex = 0; } catch(Exception exxx){} //dgReferences.CurrentRowIndex = referenceCollection.Count-1; } } } I've tried with several combinations of assigning a valid integer to CurrentRowIndex ptoprty of the grid (Commented lines) to avoid the error. Still it throws the exception telling Invalid index, index should be non-negative or less than the bounds of the collection. I tried to catch the exception while assiging an integer to the currentRowIndx property, then too, exception is thrown by the Application's Main form, parent of my Form. What is this??? I found somewhere on the NET that this is a bug in MS Datagrid. But the worst thing is that even the SelectedIndex property is failing to work. I AM REALLLY FRUSTRATED!! Please help me out! :-( Thanks in advance, Sheetal Tag: Problem with the navigation in a tree view menu Tag: 53405
  - 6
    - TabControl & ComboBox Need to have same ComboxBox in two Tab Pages of a Tab Control so that both pages would exhibit same behavour for Combo events. Modifying the InitializeComponent() to add the combo to both the pages did not work. However dynamically adding the Combo to the selected page on tabControl1_SelectedIndexChanged event worked. Is this the right approch? Can I have two seperate combo and sort of set one equal to the other so that both Combos exhibit same behaviour for its events with out duplicating the code (event handlers etc) Thanks, Rajesh Abraham Chacko Tag: Problem with the navigation in a tree view menu Tag: 53400
  - 7
    - problem with bring to front Hello, I want to create a panel in a groupBox. My panel is larger than the groupbox. I want to use a vscrollBar to navigate into my panel. But when I use my vscrollbar, my panel design is above my groupbox. I try to use the bringToFront function but it seems to not work with childrens. Does anybody could help me? Tag: Problem with the navigation in a tree view menu Tag: 53399
  - 8
    - OnResize and OnSizeChanged This is a multi-part message in MIME format. ------=_NextPart_000_006F_01C35826.3D8DCA90 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, What is the differnce between OnResize and OnSizeChanged events in = windows forms. Thanks Rajeev ------=_NextPart_000_006F_01C35826.3D8DCA90 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1106" name=3DGENERATOR> <STYLE></STYLE> </HEAD><FONT face=3DVerdana><FONT size=3D2> <BODY> <DIV>Hi,</DIV> <DIV> </DIV> <DIV>What is the differnce between OnResize and OnSizeChanged events in = windows=20 forms.</DIV> <DIV> </DIV> <DIV>Thanks</DIV> <DIV>Rajeev</DIV></BODY></HTML></FONT></FONT> ------=_NextPart_000_006F_01C35826.3D8DCA90-- Tag: Problem with the navigation in a tree view menu Tag: 53387
  - 9
    - How Do I Capture Mouse Wheel Movements? I have a Microsoft wheel mouse. When focus is on a scrollable panel, I would like to capture mouse wheel movement events to make the panel scroll as the wheel is turned. I don't see a mouse wheel event in the Windows.Forms.Control or panel control. Is there a way I can capture this in .NET? Thanks. Tony Lin Fremont, CA Tag: Problem with the navigation in a tree view menu Tag: 53385
  - 10
    - Making An AltTab Program/Task Switcher Hi guys, just like to ask how do I go about making a task switcher? Specifically I'd like to know what are the actual WindowStyles and WindowStyleEx I should look for to determine wheter or not to include it in the list. I've already done the EnumWindows bit, excluded all the blank title, and invisible windows.. but I'm still getting duplicates.. like VS .Net which has a main window.. and a Hidden window? There was supposed to be an article in MSDN I guess but it's not there anymore Thanks In Advance Tag: Problem with the navigation in a tree view menu Tag: 53383
  - 11
    - An If Then but Different This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C357A7.083398E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable All, I am trying to calculate an if statement base of a value of 12 = multiplier. I'd much rather not have to type this all the way up for 60 = years. How can I turn my if statement into something like If Period = =3D 12 or multiplier of 12 then? For Period =3D 1 To TotPmts 'My period Work If Period =3D 12 Or Period =3D 24 Or Period =3D 36 Or Period = =3D 48 Or Period =3D 60 _ Or Period =3D 72 Or Period =3D ...........Then End If Next Period Thanks, Brian P. Hammer ------=_NextPart_000_0008_01C357A7.083398E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1170" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV>All,</DIV> <DIV> </DIV> <DIV>I am trying to calculate an if statement base of a value of  = 12=20 multiplier.  I'd much rather not have to type this all the way up = for 60=20 years.  How can I turn my if statement into something like  If = Period=20 =3D 12 or multiplier of 12 then?</DIV> <DIV> </DIV> <DIV> </DIV> <DIV>        For Period =3D 1 To=20 TotPmts<BR>'My  period Work</DIV> <DIV>            = If=20 Period =3D 12 Or Period =3D 24 Or Period =3D 36 Or Period =3D 48 Or = Period =3D 60=20 _<BR>            = Or=20 Period =3D 72 Or Period =3D ...........Then<BR></DIV> <DIV>            = End=20 If<BR><BR>        Next = Period<BR></DIV> <DIV><BR>Thanks,<BR>Brian P. Hammer</DIV></BODY></HTML> ------=_NextPart_000_0008_01C357A7.083398E0-- Tag: Problem with the navigation in a tree view menu Tag: 53380
  - 12
    - Could not instantiate ActiveX control because the current thread is not in a sin Hi, I have a .NET .DLL called by a VB6 EXE. The following error message is when trying to instantiate a form in the .NET .DLL: Could not instantiate ActiveX control 'c932ba85-4374-101b- a56c-00aa003668dc' because the current thread is not in a single-threaded apartment Some documents suggest adding <STAThread()> proceeding the Main() method to enforce the .NET in running in the static thread. However, there is no Main() method in the .NET .DLL. Any one knows how to solve this problem? Appreciated very much. Tag: Problem with the navigation in a tree view menu Tag: 53375
  - 13
    - Selecting a directory dialog Is there anyway I can use the common dialogs SaveFileDialog for example, to select a directory? Seems it just opens the directory when I select it, and I don't see any flags to turn that functionality off. Thanks Ray Tag: Problem with the navigation in a tree view menu Tag: 53367
  - 14
    - Icons and Listviews I've got a series of items in a listview that contain icons in the first column. These icons are basically squares of specific colors (i.e. red, yellow, dark gray). When one of the items is selected and subsequently highlighted, the selected color is also applied to the icon, changing it to dark gray. I was wondering it it were possible to allow the user to select and highlight an item, while maintaining teh color of the icon. Or, in other words, disable selection and highlighting on the first column. Hacks and inelegant workarounds will also be accepted! Thanks, Chris Tag: Problem with the navigation in a tree view menu Tag: 53366
  - 15
    - Unable to Merge Menus... Guys, I've created a simple MDI form with a Top-Level menu and another Form with a Top-Level Menu. I was under the impression that their menu items were supposed to merge when I loaded the sub-form as a child of the MDI form. However, nothing happens. No merging takes place. I can't seem to figure out what's going on here. I'm using VB.NET 2003. Any help would be appreciated. Thanks, Mike Tag: Problem with the navigation in a tree view menu Tag: 53365
  - 16
    - Transfer an event to a different control Hi A simple question: I have a form with a ListBox and a RichTextBox. The user selects the list box and types some characters. I am trapping KeyPress events on the list box, and want to simulate having the rich text box receive that key press, so that the characters would also appear in the text box. I don't want to alter the text of the text box programatically with SelectedText=, because the text box is also taking care of the effect of backspace and other key presses. I believe that if one control contains another, the event is passed up the container hierarchy until it is handled, so I could set Enabled=false. But how can I transfer the event between peer controls, and can this be done in managed code? Many thanks for your help, James Carlyle Tag: Problem with the navigation in a tree view menu Tag: 53364
  - 17
    - VS.NET Installer Documentation I was wondering if there is any documentation on how to create an installer using the VS.NET Installer Project. I have played with it and understand some. I am specifically interested in how to: 1) See if .NET is installed and install if necessary 2) See if a database is installed (MSDE) and install if necessary 3) How to create program groups and short cuts for the START Menu 4) How to see if there is a previous version of software on the machine and overwrite, not the default of uninstall and then install. Thanks, Dave Tag: Problem with the navigation in a tree view menu Tag: 53360
  - 18
    - DataGrid row icons Hi, is it possible to get a handle to the icons used in a datagrid row? I want to use the same icons on a button control. E.g. The current selected row shows as a right arrow head and a new record shows as an asteric (*), etc. Thanks, Graeme Tag: Problem with the navigation in a tree view menu Tag: 53359
  - 19
    - DataGrid question Hi there!!! Is it possible to insert a button contol into the cell of the datagrid??? -- Vadym Stetsyak PDS Tag: Problem with the navigation in a tree view menu Tag: 53358
  - 20
    - resize panels smoothly Hi, I have a windows form with a button and 2 panels. All Panel.Dock = DockStyle.Left ------------- | | | | 1 | 2 | | | | ------------- When I click on the button, I want panel 1 to shrink and panel 2 to grow in width: int i = p1.Width; p1.Width = p2.Width; p2.Width = i; this.Refresh(); My question is... how to make the shrinking and growing animation look smooth and not flickering on the monitor? I tried to use timer, but it's completely unacceptable for user's experience. Please help! Thanks, Ching-Lung Tag: Problem with the navigation in a tree view menu Tag: 53355
  - 21
    - Trying to Auto Deploy Windows App (No Luck!) I am using a call application that has a button with the=20 following code to have the windows application sitting on=20 the web server come up.=20 Private Sub Button1_Click(ByVal sender As System.Object,=20 ByVal e As System.EventArgs) Handles Button1.Click=20 Try=20 Dim formAsm As [Assembly] =3D [Assembly].LoadFrom=20 ("http://SERVER/Cusip/CusipWindows.exe")=20 Dim formtype As Type =3D formAsm.GetType ("CusipChangeWindows.Form1")=20 Dim FormObj As Object=20 FormObj =3D Activator.CreateInstance(formtype)=20 Dim Form1 As Form =3D CType(FormObj, Form)=20 Form1.Show()=20 Catch ex As Exception=20 MsgBox(ex.Message)=20 End Try=20 End Sub=20 When I press the button I get an error on the=20 CreateInstance line ("Exception has been thrown by the=20 target of an invocation"). Listed below is the code from=20 the windows application. I setup the application under=20 the inetpub/wwwroot folder and gave it script only=20 executable permission and I put the data layer dll in the=20 GAC with a strong name. I also setup the server as a=20 trusted site on my machine and changed the security=20 policy for trusetd sites to meduim using the .NET wizard.=20 I don't know what else to try to get this application to=20 run. I also ran the application right from the browser=20 without the intermediary application and I got this=20 error:=20 "An unhandled exception of=20 type 'System.Security.SecurityException' occurred in=20 IEExec.exe=20 Additional information: Request for the permission of=20 type System.Security.Permissions.SecurityPermission,=20 mscorlib, Version=3D1.0.5000.0, Culture=3Dneutral,=20 PublicKeyToken=3Db77a5c561934e089 failed."=20 Code:=20 *****************************************************=20 Imports Microsoft.ApplicationBlocks.Data=20 Imports System.Security.Principal.WindowsIdentity=20 Imports System.Configuration=20 Public Class Form1=20 Inherits System.Windows.Forms.Form=20 Private dsCusip As New DataSet=20 Private CusipTable As New DataTable=20 Private iChange As Byte=20 Private MyString As String =3D GetCurrent.Name() 'Gets the=20 windows user=20 Private User As String =3D MyString.Remove(1, 11)=20 Private configFile As String =3D Application.ExecutablePath=20 & ".config"=20 Private strConnection As String=20 Private Function SaveNewChange(ByVal OrigCusip As String,=20 ByVal NewCusip As String, ByVal effdt As Date, ByVal=20 Commnt As String) As Boolean=20 Try=20 ' Set up parameters (4 input)=20 Dim arParms() As SqlClient.SqlParameter =3D New=20 SqlClient.SqlParameter(4) {}=20 arParms(0) =3D New SqlClient.SqlParameter("@OrigCusip",=20 SqlDbType.Char, 15)=20 arParms(0).Value =3D OrigCusip=20 arParms(1) =3D New SqlClient.SqlParameter("@NewCusip",=20 SqlDbType.Char, 15)=20 arParms(1).Value =3D NewCusip=20 arParms(2) =3D New SqlClient.SqlParameter("@EffDate",=20 SqlDbType.DateTime)=20 arParms(2).Value =3D effdt=20 arParms(3) =3D New SqlClient.SqlParameter("@User",=20 SqlDbType.VarChar, 15)=20 arParms(3).Value =3D User=20 arParms(4) =3D New SqlClient.SqlParameter("@Comments",=20 SqlDbType.VarChar, 2000)=20 arParms(4).Value =3D Commnt=20 Dim Reader =3D SqlHelper.ExecuteReader(strConnection,=20 CommandType.StoredProcedure, "Cusip_CusipChangeSave",=20 arParms)=20 While Reader.Read=20 MsgBox(Reader.Item("Status"))=20 End While=20 'set the changed flag=20 iChange =3D 0=20 Catch ex As Exception=20 MsgBox(ex.Message)=20 End Try=20 End Function=20 Private Sub btnSave_Click(ByVal sender As System.Object,=20 ByVal e As System.EventArgs) Handles btnSave.Click=20 If txtOrigCusip.Text <> "" And txtNewCusip.Text <> ""=20 Then=20 SaveNewChange(txtOrigCusip.Text, txtNewCusip.Text,=20 dtEffDate.Value, txtComments.Text)=20 End If=20 End Sub=20 Public Sub getChanges()=20 Dim connection As SqlClient.SqlConnection =3D Nothing=20 If iChange =3D 0 Then=20 Try=20 connection =3D GetConnection(strConnection)=20 Catch ex As Exception=20 MessageBox.Show("The connection with the database can=B4t=20 be established", "Application Error",=20 MessageBoxButtons.OK, MessageBoxIcon.Error)=20 Exit Sub=20 End Try=20 Try=20 SqlHelper.FillDataset(connection,=20 CommandType.StoredProcedure, "Cusip_PamCusipChanges",=20 dsCusip, New String() {"Cusips"})=20 CusipTable =3D dsCusip.Tables("Cusips")=20 DataGrid1.DataSource =3D dsCusip.Tables("Cusips")=20 'set the changed flag=20 iChange =3D 1=20 Catch ex As Exception=20 MsgBox(ex.Message)=20 End Try=20 End If=20 End Sub=20 Private Sub TabControl1_Click(ByVal sender As Object,=20 ByVal e As System.EventArgs) Handles TabControl1.Click=20 Dim i As Int32 =3D TabControl1.SelectedIndex=20 If i =3D 1 Then=20 getChanges()=20 End If=20 End Sub=20 Private Sub btnDelete_Click(ByVal sender As=20 System.Object, ByVal e As System.EventArgs) Handles=20 btnDelete.Click=20 Dim connection As SqlClient.SqlConnection =3D Nothing=20 Dim ErrorMsg As String=20 Try=20 connection =3D GetConnection(strConnection)=20 Catch ex As Exception=20 MessageBox.Show("The connection with the database can=B4t=20 be established", "Application Error",=20 MessageBoxButtons.OK, MessageBoxIcon.Error)=20 Exit Sub=20 End Try=20 'Create the command that will be used for insert=20 operations=20 Dim insertCommand As SqlClient.SqlCommand =3D=20 SqlHelper.CreateCommand (connection, "Cusip_CusipChangeSave", "OrigCusip", "NewCus ip", "EffDate", "User", "Comments")=20 'Create the command that will be used for update=20 operations=20 Dim updateCommand As SqlClient.SqlCommand =3D=20 SqlHelper.CreateCommand (connection, "Cusip_UpdateCusipChanges", "ID")=20 'Create the command that will be used for delete=20 operations=20 Dim deleteCommand As SqlClient.SqlCommand =3D=20 SqlHelper.CreateCommand (connection, "Cusip_DeleteSingleCusip", "ID")=20 Try=20 'Update the data source with the DataSet changes=20 SqlHelper.UpdateDataset(insertCommand, deleteCommand,=20 updateCommand, dsCusip, "Cusips")=20 MsgBox("Data Saved")=20 Catch ex As Exception=20 MsgBox(ex.Message)=20 Catch concurrencyException As DBConcurrencyException=20 MessageBox.Show("A concurrency error has ocurred while=20 trying to update the data source", "Application Error",=20 MessageBoxButtons.OK, MessageBoxIcon.Error)=20 ErrorMsg =3D "The following rows weren=B4t updated: "=20 Dim currentRow As DataRow=20 For Each currentRow In CusipTable.Rows=20 If currentRow.RowState <> DataRowState.Unchanged Then=20 ErrorMsg +=3D Environment.NewLine & "Product ID: " &=20 currentRow("ProductID").ToString() & _=20 " Product Name: " & currentRow("ProductName").ToString()=20 End If=20 MsgBox(ErrorMsg)=20 Next=20 Finally=20 'set the changed flag=20 iChange =3D 0=20 End Try=20 End Sub=20 Private Sub CreateReport(ByVal QueryType As String)=20 MsgBox(strConnection)=20 End Sub=20 Private Function GetConnection(ByVal connectionString As=20 String) As SqlClient.SqlConnection=20 Dim connection As New SqlClient.SqlConnection (connectionString)=20 connection.Open()=20 Return connection=20 End Function=20 Private Sub Form1_Load(ByVal sender As Object, ByVal e As=20 System.EventArgs) Handles MyBase.Load=20 strConnection =3D ConfigurationSettings.AppSettings.Get ("ConnectionString")=20 End Sub=20 End Class=20 ********************************************************** **************** Tag: Problem with the navigation in a tree view menu Tag: 53353
  - 22
    - Need to write a App to read a Ftp and a Stored Procedure Hello All, I would like to write a VB.Net App which reads Ftp and a Stored Procedure.Any Idea.? Thanks Tag: Problem with the navigation in a tree view menu Tag: 53351
  - 23
    - program exited without throwing any exception We have upgraded the VB6 application to VB.NET. The application uses Crystal Reports 9.0 (Advanced) for reports, it also has MSFLEXGRID of VB6. If we switch to another application by pressing ALT+TAB, the .NET application exits without generating any errors. It says " The program xxx "has exited with code 0"" Tag: Problem with the navigation in a tree view menu Tag: 53350
  - 24
    - Making control size fixed (like PictureBox.SizeMode) How can I make my control have a fixed size? I want it to act exactly like the PictureBox control does when SizeMode is set to AutoSize. Thanks! Tag: Problem with the navigation in a tree view menu Tag: 53348
  - 25
    - WebBrowser ctrl: switch off context menu in C#? Hi, I am using the AxSHDocVw.AxWebBrowser web browser control in my windows forms application in C# and I would like to switch off the context menu of the browser. Currently, I only found a solution for c/c++: It seems that one has to implement the IDocHostUIHandler interface, which should be defined in the mshtml assembly. Apparently, it is not there. Any ideas? Other solutions welcome as well! Thanks in advance, Guenter Tag: Problem with the navigation in a tree view menu Tag: 53345
- Next
  - 1
    - Long drawing loop cancellation Thinking about a standard "silly" problem of giving a user an option to cancel long drawing loop, I read a lot of articles and did some investigations of my own. (I work with C# .Net 2003). My application must provide a very sophisticated drawing, which is actually a millions-length sequence of simple line or ellipse drawings executed in a very long loop. Naturally, I'd like to give a user an option to cancel the drawing. I have a number of rather bad solutions and I don't see any acceptable one. The Solutions are: 1. The drawing loop is execute in the UI thread and calls DoEvents() to allow "Cancel" button to be pressed. The downside is well known (see DoEvents() method adoption discussions) ? UI thread is busy and natural events sequence is broken. 2. The drawing loop is executed not in the UI thread. The downside is seldom exceptions. Generally, as I know, .Net does not allow drawing from non UI thread. 3. The drawing loop is executed not in the UI thread but all drawing operations are executed in the UI thread by calling Invoke for each elementary drawing operation. Theoretically, this must be the correct schema! . The downside is that Invoke() is a very expensive call, so it works inappropriately long (see table below). 4. Using memory-stream metafile for buffering. Actually, this is not what I need; in addition, it works even longer then #3. Here is the execution time comparative graph for different implementations of a loop with 2,000,000 drawing lines on my PC. 1. Execution in the UI thread (without DoEvents() calling) - time 00:00:04.6250592 (given as 1) and no "Cancel" available 2. Execution in the UI thread (calling DoEvents() on each step) - 00:00:10.5937500 (2.3 times longer) 3. Execution in a non UI thread (calling Invoke() for each drawing operation) - 00:05:41.560314 (73.8 times longer) 4. Drawing in memory-metafile (no DoEvents() or Invoke() ) - execution time 00:05:06.7153993 (66.3 times longer) Of course, 5 minutes instead of 5 seconds is too much for such a common task (a long loop cancellation). Any suggestions will be deeply appreciated. Alex Tag: Problem with the navigation in a tree view menu Tag: 53342
  - 2
    - Cannot find CrystalReportViewer control I did a full installation on VB .NET version 7.0 and .NET framework 1.0. I tried to find the CrystalReportViewer in the Toolbox but I couldn't. I also tried to look for it in Tools/customize toolbox but still weren't successful. Is it something to do with the VB .NET standard version or enterprise version? Also I found some control called CrystalReport, but it is not mentioned in the .NET document. What's the difference between this one and CrystalReportViewer? Thanks in advance. Tag: Problem with the navigation in a tree view menu Tag: 53340
  - 3
    - transfer a value from one form to another I have a form with a textbox that will hold a mean value. When the textbox gets focus, another form pops up, values are entered, and the mean value is calculated. The mean value is stored in a Public variable. The two forms are in different classes. How do I transfer this value to the original textbox? Tag: Problem with the navigation in a tree view menu Tag: 53336
  - 4
    - Opening a form over a control Can anyone explain how set the location of a new windows form based aginst the current loctaion of a control on a form, ie formA has a text control in a group box and when the user starts typing in the text box I want to be able to open a new form over the exact location of the textbox. the problem I am having is that the textbox location is offset based aginst the groupbox and not the form, pulling my hair out please help :) Tag: Problem with the navigation in a tree view menu Tag: 53333
  - 5
    - Ole Automation Control in .Net Dear all, I want to embed word document in .net by ole automation control, however, the control is only existing in vb6. I have asked many people, they just say to use axwebbrowser controls, however the controls is a little bit limit functions! If I dont want to use the webbrowsercontrols, what can i to use? Tag: Problem with the navigation in a tree view menu Tag: 53326
  - 6
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  - 7
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  - 8
    - Hidding Row Selector Columns of DataGrid This is a multi-part message in MIME format. ------=_NextPart_000_00BA_01C35777.7C55FA40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi i want to hide the row selector column, first column of the datagrid = which allows to select complete row / shows ">" for the active row. how can it be done? Rajeev ------=_NextPart_000_00BA_01C35777.7C55FA40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1106" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV><FONT face=3DVerdana size=3D2>Hi</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>i want to hide the row selector = column, first=20 column of the datagrid which allows to select complete row / shows=20 "<STRONG>></STRONG>" for the active row.</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2>how can it be done?</FONT></DIV> <DIV><FONT face=3DVerdana size=3D2></FONT> </DIV> <DIV><FONT face=3DVerdana size=3D2>Rajeev</FONT></DIV></BODY></HTML> ------=_NextPart_000_00BA_01C35777.7C55FA40-- Tag: Problem with the navigation in a tree view menu Tag: 53314
  - 9
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  - 10
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  - 11
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  - 12
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  - 13
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  - 14
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  - 15
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  - 16
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  - 17
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  - 18
    - DataGrid (or ListBox) "Viewport" Size This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C356B4.FB15D580 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable How do I find out the size (specifically width) of a listbox's = (specifically datagrid) "viewport" where the "viewport" does not contain = borders (Fixed3D and otherwise), scrollbars, etc. ? Microsoft defines a "viewport" in help text for the = "DataGrid.VisibleColumnCount" property as so: "The viewport is the = rectangular area through which the grid is visible." Well that's = exactly what I need but where do I get it and it's attributes? I'm asking because I'm writing a method which fills the width of a = DataGrid with the columns defined in the active TableStyle. The problem = is that I can't get the width of the datagrid which does not include the = border, scrollbars, etc. =20 I've tried the following and they all refer to the width of the = ClientRectangle which inclues scrollbars, borders, etc. dataGrid.Width=20 dataGrid.ClientRectangle.Width=20 dataGrid.Bounds.Width=20 dataGrid.DisplayRectangle.Width dataGrid.Size.Width If I allocate column widths such that the total of all column widths is = equal to, say, dataGrid.Width, I still get a horizontal scrollbar. The = difference between dataGrid.Width and this total of all column widths is = the width of say a 3D border, vertical scrollbar, etc. Any suggestions? Kristin Kristin Barker=20 Principal Software Engineer=20 Email: kristin_barker@natureserve.org=20 http://www.natureserve.org ------=_NextPart_000_0008_01C356B4.FB15D580 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1170" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff background=3D""><FONT face=3DArial size=3D2>How = do I find out=20 the size (specifically width) of a listbox's (specifically datagrid) = "viewport"=20 where the "viewport" does not contain borders (Fixed3D and otherwise),=20 scrollbars, etc. ?<BR><BR>Microsoft defines a "viewport" in help text = for the=20 "DataGrid.VisibleColumnCount" property as so: "The viewport is the = rectangular=20 area through which the grid is visible."  Well that's exactly what = I need=20 but where do I get it and it's attributes?<BR><BR>I'm asking because I'm = writing=20 a method which fills the width of a DataGrid with the columns defined in = the=20 active TableStyle.  The problem is that I can't get the width of = the=20 datagrid which does not include the border, scrollbars, etc.  = <BR><BR>I've=20 tried the following and they all refer to the width of the = ClientRectangle which=20 inclues scrollbars, borders, etc.<BR><BR>dataGrid.Width=20 <BR>dataGrid.ClientRectangle.Width <BR>dataGrid.Bounds.Width=20 <BR>dataGrid.DisplayRectangle.Width<BR>dataGrid.Size.Width<BR><BR>If I = allocate=20 column widths such that the total of all column widths is equal to, say, = dataGrid.Width, I still get a horizontal scrollbar.  The difference = between=20 dataGrid.Width and this total of all column widths is the width of say a = 3D=20 border, vertical scrollbar, etc.<BR><BR>Any=20 suggestions?<BR><BR>Kristin<BR><BR>Kristin Barker <BR>Principal Software = Engineer <BR>Email: kristin_barker@natureserve.org=20 <BR>http://www.natureserve.org </FONT></BODY></HTML> ------=_NextPart_000_0008_01C356B4.FB15D580-- Tag: Problem with the navigation in a tree view menu Tag: 53283
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  - 20
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  - 21
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  - 22
    - Problems with ImageList Control This is a multi-part message in MIME format. ------=_NextPart_000_000D_01C35625.5D88C910 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I am developing a Windows Form application and I am experiencing issues = with the following line of code..... Me.ImageListCRSGroupImages.ImageStream =3D = CType(resources.GetObject("ImageListCRSGroupImages.ImageStream"), = System.Windows.Forms.ImageListStreamer) The type of error I get is a System.TypeInvocationException Can anyone help please? ------=_NextPart_000_000D_01C35625.5D88C910 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1170" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV> <DIV><FONT face=3DArial size=3D2>I am developing a Windows Form = application and I am=20 experiencing issues with the following line of = code.....</FONT></DIV></DIV> <DIV> <P><FONT face=3DArial = size=3D2><STRONG>Me.ImageListCRSGroupImages.ImageStream =3D=20 CType(resources.GetObject("ImageListCRSGroupImages.ImageStream"),=20 System.Windows.Forms.ImageListStreamer)</STRONG></FONT></P> <DIV><FONT face=3DArial size=3D2></FONT><FONT face=3DArial size=3D2>The = type of error I=20 get is a <STRONG>System.TypeInvocationException</STRONG></FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Can anyone help=20 please?</FONT></DIV></DIV></BODY></HTML> ------=_NextPart_000_000D_01C35625.5D88C910-- Tag: Problem with the navigation in a tree view menu Tag: 53273
  - 23
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  - 24
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  - 25
    - Dataset Update che funziona in modo strano Ciao ho una piccola anomalia, in un dataset. Ho una form di dettaglio collegata con delle textbox a un database sqlserver tramite dataadapter, dopo aver generato il dataset e le stringhe sql per aggiornamenti e selezioni, mi si presenta il prblema. Tramite metodo fill riempio il database, e poi aggiorno tramite il metodo update soltanto che il database viene aggiornato solo se mi sposto al record successivo a quel punto riesco ad aggiornare il database. Mi sposto tramite bindingmanager, è normale che si comporti così. Insomma modifico e se salvo nulla, se mi sposto al record successivo e salvo mi salva il record precedente. Come mai? DaAccessori.update("DsAccessori,"T_Accessori"") e si comporta come vi ho detto mah. Grazie Ciao. Tag: Problem with the navigation in a tree view menu Tag: 53260

Hello, i have an application developed in C# .NET, it has
a main window where is the tree view menu and it has
several options, and when i'm navigating through the
options suddenly i get an exception that says: "Exception
has been thrown by the target of an invocation object"

I hope you can help me to fixed this kind of error...

Thank you....

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RE: Problem with the navigation in a tree view menu by justinew

justinew
Mon Aug 04 20:14:03 CDT 2003

Hello Minerva,

Based on your description, I think you encountered
"System.Reflection.TargetInvocationException".

When we use VS.NET 2002 and use treeview control, we may encountered the
issue.

This is a wellknown issue with vs.net2002 and it should be fixed in
vs.net2003. Would you please try rebuild and test it with vs.net2003?

Regards,
Justin Wan
Microsoft Partner Online Support

This posting is provided "AS IS" with no warranties, and confers no rights.

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