主题：执行窗口命令后不能保存？

Dim Cols1() As String = {"来源列一","来源列二","来源列三"}
Dim Cols2() As String = {"接收列一","接收列二","接收列三"}
For Each dr1 As DataRow In DataTables("表A").Select("")   
    Dim dr2 As DataRow = DataTables("表B").find("姓名 = '" & dr1("姓名") & "'")
    If dr2 Is Nothing Then
        dr2 = DataTables("表B").AddNew()
    End If
    For i As Integer = 0 To Cols1.Length -1
        dr2(Cols2(i)) = dr1(Cols1(i))
    Next
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