clipboard/pastecelltext event ?

[Philip Bishop]

I have a question about the clipboard and how the pastecelltext event gets fired? I have a pastecelltext event that looks as follows....

Private Sub grdRErPA_PasteCellText(ByVal sender As System.Object, ByVal e As Syncfusion.Windows.Forms.Grid.GridPasteCellTextEventArgs) Handles grdRErPA.PasteCellText

If CType(e.Style, Syncfusion.Windows.Forms.Grid.GridStyleInfo).ReadOnly Then
e.Cancel = True
End If

Try
Dim i As Single = Single.Parse(e.Text)
Select Case i
Case 0, 301.0F To 332.0F
Case Else
Throw New Exception("")
End Select
Catch
display error message
e.Abort = True
End Try

End Sub

My question is this. If im copying a value of say 201 from one cell to one cell on this form it will fire this event and will display the proper error message. If however the clipboard has string.empty or "" in it and the user does a paste it never goes to the pastecelltext event. How does it know not to fire the event based on it being null or having invalid data? What says dont fire the event if its string.empty in the clipboard versus a invalid number inthe clipboard?

Thanks

[Administrator]

When this code returns psz = "", then no pasting is done and PasteCelltext is not raised.

string psz = null;
if (iData.GetDataPresent(DataFormats.UnicodeText))
	psz = iData.GetData(DataFormats.UnicodeText) as string;
else if (iData.GetDataPresent(DataFormats.Text))
	psz = iData.GetData(DataFormats.Text) as string;

This code is in GridModelDatabinder.cs, the DataBoundPaste method.