如何使用 OleDBConnection 从查询中获取多个值？

Question

我编辑了以前的代码并在下面尝试了这个，我还将文本框更改为具有相同名称的列表框，但是我现在在运行下面的代码之后在列表框中没有任何值：

myConnection.ConnectionString = providerEdit
Dim str As String
str = "SELECT [Email] FROM [PRD_Records] WHERE [ReceiveKMCWEMSAlerts] = Yes"

Using cmd As OleDbCommand = New OleDbCommand(str, myConnection)
  myConnection.Open()

  Dim reader As OleDbDataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection)
  While reader.Read()
    txtCreateAnnTo.Text = reader(0).ToString
  End While
  reader.Close()
End Using

Answer 1

感谢大家的回复....我发现了代码的问题，它很简单，我只是忽略了它。我更新了下面的代码：myConnection.ConnectionString = providerEdit 将 str 调暗为字符串 str = "SELECT [Email] FROM [PRD_Records] WHERE [ReceiveKMCWEMSAlerts] = Yes"

    Using cmd As OleDbCommand = New OleDbCommand(str, myConnection)


        myConnection.Open()

        Dim reader As OleDbDataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection)
        While reader.Read()
            txtCreateAnnTo.Items.Add(reader(0).ToString)
        End While
        reader.Close()
    End Using

如何使用 OleDBConnection 从查询中获取多个值？

How do I get multiple values from query using OleDBConnection?

vb.net

email

oledbconnection

winforms