PRB: Error 35603 "Invalid Key" with TreeView or ListView Control

MORE INFORMATION

Steps to Reproduce the Behavior

1. Create a new Standard EXE project in Visual Basic. Form1 is created by default.
2. On the Project menu, click to select Components, check Microsoft Windows Common Controls, and then click OK.
3. Add a ListView control, a TreeView control, and a CommandButton control to Form1.
4. Add the following code to the Declarations section of Form1:

   Option Explicit
   
   Private Sub Command1_Click()
   ' Uncomment either of the following lines to raise the error
   ' ListView1.ListItems(1).Key = "123"
   ' TreeView1.Nodes(1).Key = "123"
   End Sub
   
   Private Sub Form_Load()
    ListView1.ListItems.Add , , "Test1"
    TreeView1.Nodes.Add , , , "Node1"
   
   ' Uncomment either of the following lines to raise the error
   ' ListView1.ListItems.Add , "123", "Test2"
   ' TreeView1.Nodes.Add , , "123", "Node2"
   End Sub
   					

5. Uncomment any of the commented lines of code in the Form_Load event and run the project. Note that the error message in the "Symptoms" section appears immediately. Clicking the Debug button selects the uncommented line.
6. Stop the project and comment the line again.
7. Uncomment either line of code in the Command1_Click event, run the project, and click on Command1. The error message in the "Symptoms" section appears. Clicking the Debug button selects the uncommented line.

Additional Notes

• You can use the IsNumeric function to test values before you use them as keys.
• The use of white space (such as spaces) as the only non-numeric characters or appending only a single Alpha character may fail, depending on the language selected in Regional Settings.