Question

我想在组合框（名称和姓氏）中显示来自Oracle DB的2个表值。到目前为止，我只能显示一个，而且这个也不适用于WHERE标准。

 Using conn As OracleConnection = New OracleConnection("Data Source=MyDB;User Id=Lucky;Password=MyPassword;")

            Try

                conn.Open()

                Dim SQL As String
                NIZ = "SELECT Name,Surname from MyTable where ID=1 "
                Dim Cmd As New OracleCommand(SQL, conn)
                Cmd.CommandType = CommandType.Text

                Dim dr As OracleDataReader = Cmd.ExecuteReader()

                While (dr.Read())
                    CmbCustomers.Items.Add(dr.GetString(0))
                End While

                conn.Close()

            Catch ex As Exception
                MessageBox.Show(ex.Message)
            Finally
                conn.Dispose()
            End Try

有人知道如何在组合框中一起显示姓名和姓氏吗？

Answer 1

尝试以这种方式使用字符串连接

 SELECT Name ||' ' || Surname from MyTable where ID=1

如果您需要对齐，可以尝试填充

 SELECT Name || RPAD(' ', (12 - length(Name),' ') ||  '-  ' || Surname from MyTable where ID=1

连接Oracle DB中的Combobox项目

1 个答案: