Adding columns dynamically

[Peter Kamitz]

hi,

I always get the error: Item has already been added. Key in dictionary: "0"
Key being added: "0" ----when trying to databind the webgrid with
dynamically added columns.

All the columns are added without any problems, but when it comes to the
databinding (=> MyGrid.DataBind()) the error above is thrown!



here is my source code. has anybody an idea why this is not working?


private sub BindData()

Dim MyDataView As New DataView

Dim MyCol As New DataColumn

Dim MyC1Col As New C1BoundColumn



MyDataView = MyReport.GetSales()

MyGrid.AutoGenerateColumns = False

For Each MyCol In MyDataView.Table.Columns

MyC1Col.HeaderText = MyCol.ColumnName

MyC1Col.DataField = MyCol.ColumnName

MyGrid.Columns.Add(MyC1Col)

Next

MyGrid.DataSource = MyDataView

MyGrid.DataBind()



end BindData

 

[Imtiaz Hussain]

Is C1BoundColumn a custom template column?
Here is a sample that adds a template columns to the datagrid dynamically.
http://msdn.microsoft.com/library/en-us/vbcon/html/vbtskcreatingtemplatespro
grammaticallyindatagridcontrol.asp

If this doesnt relate to your issue, please post the complete error message.

Hope this Helps.
Imtiaz Hussain.