Error while binding datagrid

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VB

Windows

WPF

SQL-Server-2008R2

Hi all

below is the code i wrote to bind the grid from database

Dim commd As New SqlCommand("select i.ItemName, o.MeasureType,o.Cut,o.Sets,o.Ouantity,o.TMeters,o.Rate,o.Bales,o.Remark from OrderDetails as o inner join ItemInfo as i   on i.IIID=o.IIIDItemRef inner join OrderMaster as m on m.OMID=o.OMIDFormRef where m.OrderFormNo='" & cmbOrderNo.SelectedValue.ToString & "'", con)
       con.Open()
       Dim data As New DataTable
       Dim dadap As New SqlDataAdapter(commd)
       dadap.Fill(data)
       If data.Rows(0)("Sets").ToString = "0" Then
           DGOrderGeneral.ItemsSource = data.DefaultView
       Else
           DGOrderGeneral.Columns(4).Visibility = Windows.Visibility.Visible
           DGOrderGeneral.Columns(5).Visibility = Windows.Visibility.Hidden
           Dim commd1 As New SqlCommand("select i.ItemName, o.MeasureType,o.Cut,o.Sets,o.Ouantity,o.TMeters,o.Rate,o.Bales,o.Remark from OrderDetails as o inner join ItemInfo as i   on i.IIID=o.IIIDItemRef inner join OrderMaster as m on m.OMID=o.OMIDFormRef where m.OrderFormNo='" & cmbOrderNo.SelectedValue.ToString & "'", con)
           con.Close()
           con.Open()
           Dim data1 As New DataTable
           Dim dadap1 As New SqlDataAdapter(commd1)
           dadap1.Fill(data1)
           DGOrderGeneral.ItemsSource = data1.DefaultView
       End If

But the problem is when ever i run this code it's throughing error
ambiguousmatchexception was unhandled
it's not showing also where is the problem.but if i comment this part, then it's running properly..
Please need help from your side..

Thank you