命令窗口调试看
Dim cmd As new SQLCommandDim s As String
cmd.Ccmd.CommandText = “select 列名 from {合同} where 确保只能找到一行的filter "s = cmd.ExecuteScalarOutput.Show(s)
cmd.C 换成连接数据库名的那句,论坛不让显示连接数据库的代码