System.ArgumentException: The text range '{StartOffset=5538,

SyntaxEditor for Windows Forms Forum

Posted 9 years ago by Jonathan Reis
Version: 4.0.0284
Platform: Universal Windows Controls
Environment: Windows XP (32-bit)
With the code below, I occassionally get the following exception.

Is there anything obvious that I'm doing wrong? Under what situation would a node returned by _syntaxEditor.Document.Outlining.RootNode[i] return a range that would be greater than the number of characters in the document?

Thanks in advance,


System.ArgumentException: The text range '{StartOffset=5538,EndOffset=12590}'
must be less than or equal to the count of characters in the document.
at ActiproSoftware.SyntaxEditor.TextRange.a(Document A_0)
at ActiproSoftware.SyntaxEditor.Document.GetSubstring(TextRange textRange, LineTerminator lineTerminator)
at ActiproSoftware.SyntaxEditor.Document.GetSubstring(Int32 offset, Int32 length)
at HL7Spy.Views.MessageQuery.HL7QueryView.(Object , EventArgs )
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e) at System.Windows.Forms.ToolStripButton.OnClick(EventArgs e) at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e) at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e) at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met) at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met) at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
// find text within current region, or first region greater than current position
int offset = _syntaxEditor.Caret.Offset - _syntaxEditor.Caret.CharacterColumn;
for (int i = 0; i < _syntaxEditor.Document.Outlining.RootNode.Count; ++i)
    OutliningNode loc = _syntaxEditor.Document.Outlining.RootNode[i];
    if (i == 0 && offset < loc.StartOffset)
        string query = _syntaxEditor.Document.GetSubstring(offset, loc.StartOffset);
        if (query.Trim().Length > 0)
            sqlQuery = query;

    if (offset >= loc.StartOffset && offset < loc.EndOffset || loc.StartOffset > offset)
        sqlQuery = loc.Text;
[Modified at 05/15/2010 01:47 PM]

[Modified at 05/15/2010 01:56 PM]

Comments (2)

Posted 9 years ago by Actipro Software Support - Cleveland, OH, USA
Hi Jonathan,

GetSubstring takes offset/length, not start-offset/end-offset. That's your problem here.

Actipro Software Support

Posted 9 years ago by Jonathan Reis
Dough... Thanks very much for pointing that out to me!

The latest build of this product (v2018.1 build 0341) was released 3 months ago, which was after the last post in this thread.

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