WPF下DataGrid的简单应用

 Dim dt As New DataTable()
        '-------------------
        dt.Columns.Add(New DataColumn("名称"))
        dt.Columns.Add(New DataColumn("说明"))
        dt.Columns.Add(New DataColumn("值"))
        '-------------------
        Dim dr1 As DataRow
        dr1 = dt.NewRow()
        dr1() = ""
        dr1() = ""
        dr1() = ""
        dt.Rows.Add(dr1)
        Dim dv As New DataView(dt)
        DataGrid1.ItemsSource = dv
        DataGrid1.Columns().Width =
        DataGrid1.Columns().Width =
        DataGrid1.Columns().Width =