As I recall an external component was loading a different version of the riched32.dll/riched20dll. Workaround was to initialize the right dll first (new RichTextBox() in your application). Hope this helps.

Have you tried the Visio Developer newsgroup? http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.visio.developer&lang=en&cr=US[^]

I'm having difficulty using the Visio Drawing Control 2003 and the RichTextBox anywhere in the same application. e.g. public partial class VisForm : Form { public VisForm() { //RichTextBox rttb = new RichTextBox(); //string rtf = rttb.Rtf; //rttb.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}"; //string rtfText = rttb.Text; InitializeComponent(); RichTextBox rttb1 = new RichTextBox(); string rtf1 = rttb1.Rtf; rttb1.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}"; string rtfText1 = rttb1.Text; } --- } First Scenario: Initialize the RichTextBox BEFORE the Visio Drawing Control. Set rttb.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}"; rttb.Text will then be "VisibleHidden" which is correct. With the form displayed press CTRL+F to display the Find Dialog. The result is an AccessViolationException with the following message: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt". Second Scenario: Initialize the RichTextBox AFTER the Visio Drawing Control. Set rttb.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}"; rttb.Text will then be "Visible" which is WRONG. i.e. the hidden text does not get set when the Visio Control is initialized before the RichTextBox. With the form displayed, this time pressing CTRL+F results in the Find Dialog being displayed with no problem. Any ideas? Thanks, B.

Try preventing the page from being cached. Use the following at the top of the aspx page. <% Response.CacheControl = "no-cache"; Response.AppendHeader("Pragma", "no-cache"); Response.Expires = -1; %>

Steve Stchur has UserControl/javascript solution for maintaining the scroll position: http://aspnet.4guysfromrolla.com/articles/111704-1.2.aspx[^]

I'm having difficulty adding dynamically loading one control GridViewControl.ascx to another (ControlOnPage.ascx). Adding a placeHolder to Default.aspx and dynamically loading GridViewControl.ascx works fine. Click Edit, modify a field, click update - everything's in order. Problem: Add ControlOnPage.ascx to Default.aspx. Add the placeHolder to ControlOnPage.ascx. Dynamically add GridViewControl.ascx to the placeHolder. This time the Edit link behaves like an empty PostBack button. RowEditing does not fire. Any ideas? Thanks, B

This might help. See Late Binding here: http://support.microsoft.com/kb/302902[^]

http://www.microsoft.com/downloads/details.aspx?familyid=557120bd-b0bb-46e7-936a-b8539898d44d&displaylang=en[^]

I don't recall where I found this but it should solve both of you problems: Private Const WM_SETREDRAW As Integer = &HB Private Const WM_USER As Integer = &H400 Private Const EM_GETEVENTMASK As Integer = (WM_USER + 59) Private Const EM_SETEVENTMASK As Integer = (WM_USER + 69) Private Declare Auto Function SendMessage Lib "user32.dll" ( _ ByVal hWnd As IntPtr, _ ByVal msg As Integer, _ ByVal wParam As Integer, _ ByVal lParam As IntPtr) As IntPtr ' We want to suspend redrawing because we need to select each ' character in turn to determine its fonts. However, RichTextBox ' appears to be missing some properties to do this, so use API: ' Stops RichText redrawing: richTextBox1.SuspendLayout() SendMessage(richTextBox1.Handle, WM_SETREDRAW, 0, IntPtr.Zero) ' Stops RichText sending any events: Dim eventMask As IntPtr = SendMessage( _ richTextBox1.Handle, EM_GETEVENTMASK, 0, IntPtr.Zero) ' Get the selection extent: Dim selStart = richTextBox1.SelectionStart Dim selEnd = richTextBox1.SelectionStart + richTextBox1.SelectionLength ... perform processing here ... ' Turn events back on again: SendMessage(richTextBox1.Handle, EM_SETEVENTMASK, 0, eventMask) ' Select the correct range (we must do this with events on otherwise ' the scroll state is inconsistent): richTextBox1.Select(selStart, selSize) ' Turn redraw back on again: SendMessage(richTextBox1.Handle, WM_SETREDRAW, 1, IntPtr.Zero) richTextBox1.ResumeLayout() ' Show changes richTextBox1.Invalidate()

No problem

In the NodeMouseClick event: treeview.SelectedNode = treeview.GetNodeAt(e.Location);

Use IntPtr in place of Int32.

internal protected is a superset of internal and protected. Was this your understanding?

I see this behavior is documented for 3.0 but not in 2.0. http://msdn2.microsoft.com/en-us/library/system.windows.forms.treenode.stateimageindex.aspx[^] ArgumentOutOfRangeException - The specified index is less than -1 or greater than 14. Fair enough.

Is there a max value for treeNode.StateImageIndex? I have a stateImageList with 21 images. Any image above the 15th e.g. treeNode.StateImageIndex = 15, generates an ArgumentOutOfRangeException with message: InvalidArgument=Value of '15' is not valid for 'StateImageIndex' A max value isn't documented as far as I see. What am I missing? Thanks

You shouldn't be able to as far as I know. One practice is to prevent the page from caching i.e. In your aspx page: <% Response.CacheControl = "no-cache"; Response.AppendHeader("Pragma", "no-cache"); Response.Expires = -1; Response.Cache.SetNoStore(); %> Some combination of these commands should stop caching. Then use the pageload event to redirect as necessary. Good Luck.

myControl.Click1 += new MyControl.ClickHandler(yourClickHandlerMethodInTheDialog); myControl here is an instance of the user control whose class name is MyControl.

Yanshof wrote:

What i need to know ( and does not understand ) is the dialog know about the existing of the click event before i create the connection between the dialog and the User Control ?

The instance myControl only exists at run time in all cases (even if you're using the VS Designer). -- modified at 8:33 Monday 30th July, 2007

In the user control declare a delegate and event: public event ClickHandler Click1; public delegate void ClickHandler(EventArgs e); In the button's click event raise the event: i.e. if (null != Click1) Click1(e); In the dialog add a handler for Click1: myControl.Click1 += YourHandler

I'm sure there are several solutions but my first thought is as follows: e.g. first second third fourth that wraps fourth that wraps fourth that wraps fourth that wraps string[] lines = richTextBox.Lines; i.e. lines[0] returns "first", lines[3] returns "fourth that wraps fourth that wraps fourth that wraps fourth that wraps". 1) Create a class LineClass with properties: int FirstCharacter, int LastCharacter, string Line. 2) Add an entry for each line to a List. Remember there is a return character between lines so that in my example: first instance of LineClass FirstCharacter=0, LastCharacter=4, Line=first second instance of LineClass FirstCharacter=6, LastCharacter=11, Line=second 3) Use GetFirstCharIndexOfCurrentLine to determine the cursor location. 4) Loop through List to get the line you need. If the line is a result of wrapping, your answer in 3) will fall between FirstCharacter and LastCharacter for that entry. Otherwise it will equal FirstCharacter. Good Luck.

bool? myBool = null;