How to use OnItemDataBound to disable a drop down box at run time on Datagrid 1.1

You can use FindControl from the DataGridItem to get a reference to the DropDownList embedded in the DataGrid, and then set Enabled = True/False.

Bob

Was putting this example together when Bob posted...but it's basically what he describes.

aspx:
    <form id="form1" runat="server">
        <div>
            <asp:DataGrid ID="Datagrid1" runat="server" AutoGenerateColumns="true">
                <Columns>
                    <asp:TemplateColumn>
                        <ItemTemplate>
                            <asp:DropDownList ID="DropDownList1" runat="server">
                            </asp:DropDownList>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                </Columns>
            </asp:DataGrid>
        </div>
    </form>
 
codebehind:
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Me.IsPostBack Then
            'fake data to give some rows
            Dim dt As New DataTable
            Dim col As New DataColumn("MyColumn")
            dt.Columns.Add(col)
            For i As Integer = 0 To 9
                Dim r As DataRow
                r = dt.NewRow
                r.Item("MyColumn") = i
                dt.Rows.Add(r)
            Next
            'bind to datagrid
            With Me.Datagrid1
                .DataSource = dt
                .DataBind()
            End With
        End If
    End Sub
 
    Private Sub Datagrid1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles Datagrid1.ItemDataBound
        'make sure we're in the grid, not header/footer
        If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
            'disable all:
            ''DirectCast(e.Item.FindControl("DropDownList1"), DropDownList).Enabled = False
 
            'disable based on data criteria:
            If e.Item.DataItem("MyColumn") = "5" Then
                DirectCast(e.Item.FindControl("DropDownList1"), DropDownList).Enabled = False
            End If
        End If
    End Sub

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