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                        Dim str As String = "update login set password = '999' where name ='222'"
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                        ZhangHuCommand.CommandType = CommandType.Text
                        ZhangHuAdapter.UpdateCommand = zhanghucommand
                        ZhangHuAdapter.UpdateCommand.ExecuteNonQuery()
                        ZhangHuAdapter.Fill(ZhangHuDataSet, "login")
                 


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