主题：如何把列值改成数组

 Dim str As String = e.form.Controls("ComboBox1").text
Dim a As Table = Tables("授权")
For i As Integer = 0 To a.Rows.count - 1
    Dim nr As Row = a.Rows(i)
    Dim Names As New List(Of String)
    Dim nms1() As String = nr("用户").split(",")
    'MessageBox.Show(Names)
    Names.AddRange(nms1)
    If Names.Contains(str) = False Then
        Names.Add(str)
        Else
          Names.Remove(str)
    End If
Next
我想把列值变成数组，再运用数组进行判断是否包含某个字符，再进行增删
此主题相关图片如下：qq截图20230411122122.png

下面句出问题了

Dim nms1() As String = nr("用户").split(",")

帮助搜“空值”，学一下怎么判断单元格是否是空值

Dim str As String = e.form.Controls("ComboBox1").text
Dim a As Table = Tables("授权")
For i As Integer = 0 To a.Rows.count - 1
    Dim nr As Row = a.Rows(i)
    Dim Names As New List(Of String)
    If  nr("用户") IsNot Nothing Then
        Dim nms1() As String = nr("用户").split(",")
        'MessageBox.Show(Names)
        Names.AddRange(nms1)
        If Names.Contains(str) = False Then
            Names.Add(str)
        Else
            Names.Remove(str)
        End If
    End If
Next

 Dim nms1() As String = nr("用户").split(",")

现在应该是怎样才能把列值改成数组

只要单元格有值，4楼这个代码没有问题。执行有什么错误？

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就是没有反应的，我用MEBOX测试过是这句有问题

 

代码生成的结果没有用到任何地方，当然没有反应了。想做什么功能？

Dim str As String = e.form.Controls("ComboBox1").text
Dim a As Table = Tables("授权")
For i As Integer = 0 To a.Rows.count - 1
    Dim nr As Row = a.Rows(i)
    Dim Names As New List(Of String)
    If nr("用户") IsNot Nothing Then
        Dim nms1() As String = nr("用户").split(",")
        Names.AddRange(nms1)
        If Names.Contains(str) = False Then
            Names.Add(str)
            nr("用户") = Names
        Else
            Names.Remove(str)
            nr("用户") = Names
        End If
    End If
Next

生成的结果放在用户列

没看懂，用户列拆分出来又返回用户列？