Preventing from Resizing Datagrid Columns

[Administrator]

You have suggested this solution in the Windows Forms FAQ. However, it is not working for me or shall I say that I don't really know how to implement it in my code. I just added a new Class in my project and added the code below. Nothing happens. Should I be calling the class from somewhere?

Public Class MyDataGrid

Inherits DataGrid

Protected Overrides Sub OnMouseMove(ByVal e As System.Windows.Forms.MouseEventArgs)

Dim hti As DataGrid.HitTestInfo = Me.HitTest(New Point(e.X,e.Y))

If hti.Type = DataGrid.HitTestType.ColumnResize Then

Return 'no baseclass call

End If

MyBase.OnMouseMove(e)

End Sub

End Class

[Clay Burch]

If you have dropped a datagrid onto your form with the designer, then this datagrid is defined as

Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid

and created with this code

Me.DataGrid1 = New System.Windows.Forms.DataGrid()

So, the grid being displayed is NOT your MyDataGrid class, but the Systems.Windows.Forms.DataGrid. What you have to do is to make your code use your class. One way to do this is to just change the two statements (even though there are dire warnings about doing so as this code is part of the designer created code).

Friend WithEvents DataGrid1 As MyDataGrid

and

Me.DataGrid1 = New MyDataGrid()