I have a datagrid in an ASp.net application. Only one column is created at
design time, rest of the columns are created and added to grid on the fly.

When I try to update values in datagrid through UpdateCommand event code
errors out.
e.Item.Cells.Count returns 1 even though I have more columns.


Here is the sample code for creating and adding columns on the fly.

   Private Sub GridLoad()
        Me.grdProjDetail.AutoGenerateColumns = False
        Dim ds As New DataSet
        ds = ReturnDataset_StoredProc("usp_StoredProc", Param1, Param2)

        Me.grdProjDetail.DataSource = ds

        'Create & add columns to DataGrid
        Dim col As BoundColumn

        'ProjectionDetailID
        col = New BoundColumn
        col.DataField = "ProjectionDetailID"
        Me.grdProjDetail.Columns.Add(col)

        'UpdateID
        col = New BoundColumn
        col.DataField = "UpdateID"
        Me.grdProjDetail.Columns.Add(col)

        'ItemNo
        col = New BoundColumn
        col.DataField = "ItemNo"
        Me.grdProjDetail.Columns.Add(col)

        'QuarterID
        col = New BoundColumn
        col.DataField = "QuarterID"
        Me.grdProjDetail.Columns.Add(col)

        'ITEM COLOR
        col = New BoundColumn
        col.DataField = "ITEMCOLOR"
        Me.grdProjDetail.Columns.Add(col)

        Me.grdProjDetail.DataBind()
    End Sub


Your help is appreciated.

When you dynamically build controls (or columns in this case) on the server,
you need to do this for every post back tot he server. So you need to rebuild
the columns for the grid. This is typically done in Page_Init or by overriding
CreateChildControls.

-Brock
DevelopMentor
http://staff.develop.com/ballen



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