dataGrid1.Handle(Handle 不是System.Web.UI.WebControls.DataGrid成员

[wisdom1]

如题

我用下列代码 提示： 自动调整宽度

Public Sub AutoSizeCol(ByVal col As Integer, ByVal dataGrid1 As DataGrid)
        Dim width As Single
        width = 0
        Dim numRows As Integer
        numRows = CType(dataGrid1.DataSource, DataTable).Rows.Count
        Dim g As Graphics
        Dim Handle As System.IntPtr
        g = Graphics.FromHwnd(dataGrid1.Handle)
        Dim sf As StringFormat
        sf = New StringFormat(StringFormat.GenericTypographic)
        Dim size As SizeF
        Dim i As Integer
        i = 0

        Do While (i < numRows)
            size = g.MeasureString(dataGrid1(i, col).ToString, dataGrid1.Font, 500, sf)
            If (size.Width > width) Then
                width = size.Width
            End If
            i = (i + 1)
        Loop

        g.Dispose()
        dataGrid1.TableStyles("customers").GridColumnStyles(col).Width = CType(width, Integer)

    End Sub

[wisdom1]

提示 Handle 不是System.Web.UI.WebControls.DataGrid成员？

请指点 谢谢

[wisdom1]

g = Graphics.FromHwnd(dataGrid1.Handle)

提示 Handle 不是System.Web.UI.WebControls.DataGrid成员？

请问是什么原因呢