Issue with Intelliprompt List

SyntaxEditor for Windows Forms Forum

Posted 11 years ago by Ashton - Developer, Schema Solutions LLC
Version: 4.0.0283
Platform: .NET 2.0
Environment: Windows 7 (64-bit)
I am getting the following exception when using SyntaxEditor to show an Intelliprompt list:

Some notes about the issue:

1. The issue occurs in a dialog window where the dialog does not have a parent (ie was opened as .ShowDialog())
2. The prompt is show during the CodeSnippetFieldActivated event for a snippet field
3. Items are added as such:
// create and init the list
IntelliPromptMemberList list = _editor.IntelliPrompt.MemberList;
list.Sorted = true;

// add the items
foreach (SnippetFieldListItem item in items)
list.Add(new IntelliPromptMemberListItem(item.Display, -1, null, null, item.ReplaceText));

4. List is shown via: list.Show(range.StartOffset, range.Length);
5. User picks an item from the list and presses Enter to select the item, immediately after pressing enter the exception below appears

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at ActiproSoftware.SyntaxEditor.IntelliPromptMemberList.c()
at m.d()
at ae.a(EventArgs A_0)
at ActiproSoftware.WinUICore.PopupControl.HidePopup()
at ActiproSoftware.SyntaxEditor.IntelliPromptMemberList.Complete()
at ActiproSoftware.SyntaxEditor.IntelliPromptMemberList.ActiproSoftware.SyntaxEditor.ISyntaxEditorEditModeHandler.OnKeyTyping(KeyTypingEventArgs e)
at ActiproSoftware.SyntaxEditor.SyntaxEditor.a(EditorView A_0, Keys A_1, Char A_2, Boolean A_3)
at ActiproSoftware.SyntaxEditor.SyntaxEditor.OnKeyDown(KeyEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
at System.Windows.Forms.Control.WmKeyChar(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at ActiproSoftware.SyntaxEditor.SyntaxEditor.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)

It has the effect of closing my window. I have the issue on 4.0.283 but I have had the issue on previous versions as well. I have not upgraded to 285 but can if you think that will fix the issue.



Comments (2)

Posted 11 years ago by Actipro Software Support - Cleveland, OH, USA
Hi Ashton,

It might be the null you are passing to pre-text in the IntelliPromptMemberListItem constructor. I think I found the place where it could be happening if that is null. Try making it String.Empty to see if it fixes it for now.

Actipro Software Support

Posted 11 years ago by Ashton - Developer, Schema Solutions LLC
That fixed the issue.

Thanks for the help.
The latest build of this product (v2020.1 build 0403) was released 6 months ago, which was after the last post in this thread.

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