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Datagrid Header from TableCell

During grid field validation, I would like to generate a message for
the user to tell which column had the error. So I have a control
(textbox, dropdownlist, checkbox, etc.), and would like to grab the
header text from its column. I can't find any direct link from the
TableCell (the control's parent) to the table column.

I know the TableCell has a ClientID, and the last chars will be a
number, but that number doesn't always represent the actual column.
Some of the left-side columns of my grid are sometimes hidden
(display=none), and the number in the TableCell.clien tID relates only
to the visible columns. So I can't count on the TableCell number
telling me the right column number.

In the code here, I loop through the DataGridItem cells, counting
columns, until I find the right TableCell.

Public Function GetColumnName(B yVal obj As Object) As String
Dim i As Integer
For i = 0 To CType(obj.paren t.parent,
DataGridItem).C ells.Count - 1
If CType(obj.paren t, TableCell).Clie ntID =
CType(obj.paren t.parent, DataGridItem).C ells(i).ClientI D Then
Return CType(obj.Paren t.Parent.Parent .Parent,
DataGrid).Colum ns(i).HeaderTex t
End If
Return ""
End Function

The code works fine, but I was hoping for a more elegant solution. Is
there one?

I'm using .NET Framework v1.1.

Jun 27 '08 #1
0 907

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