Question

我正在开发一个项目，程序从表中获取项目并将其放在列表视图中。现在我想检查前3项与我设置的另一个列表视图中的项目是否匹配，并返回一条消息，无论listview1是否包含listview2中的任何项目。我可以为整个listview1做这个，但我想检查前三名。

For Each li As ListViewItem In ListView2.Items
    Dim liToFind As ListViewItem = ListView1.FindItemWithText(li.Text)
    If Not IsNothing(liToFind) Then
       Using New Centered_MessageBox(Me)
           MessageBox.Show(li.Text & " has released a new episode!", "New release", MessageBoxButtons.OK, MessageBoxIcon.Information)
       End Using
    End If
Next

这是我到目前为止的代码，我正在检查listview2中的项目文本以查看它是否与listview1中的任何项目匹配，但是无法弄清楚如何使用前3个来执行此操作

帮助会很大的帮助！

Answer 1

这是一个例子 - 显然你可以在这里更聪明。

Dim checkrows As Integer = 3
Dim numFound As Integer
    For row As Integer = 0 To Math.Min(checkrows - 1, ListView1.Items.Count - 1)
Dim text As String = ListView1.Items(row).Text
Dim found As Boolean
    For Each item2 As ListViewItem In ListView2.Items
        If text.Contains(item2.Text) Then
            found = True
            Exit For
        End If
    Next
If found Then numFound += 1
Next
If numFound > 0 Then MessageBox.Show("At least one of the first " & checkrows.ToString & " rows         in ListView1 matches a row in ListView2")
If numFound = checkrows Then MessageBox.Show("The first " & checkrows.ToString & " rows in ListView1 match a row in ListView2")

Answer 2

这对我有用，感谢AltF4，但你的确没有为我做好准备。 Ty无论如何都要把时间花在这上面＆lt; 3

Dim checkrows As Integer = 3
Dim numFound As Integer
    For row As Integer = 0 To Math.Min(checkrows - 1, ListView1.Items.Count - 1)
Dim text As String = ListView1.Items(row).Text
Dim found As Boolean
    For Each item2 As ListViewItem In ListView2.Items
        If text.Contains(item2.Text) Then
            found = True
            Exit For
        End If
    Next
If found Then numFound += 1
Next
If numFound > 0 Then MessageBox.Show("At least one of the first " & checkrows.ToString & " rows         in ListView1 matches a row in ListView2")
If numFound = checkrows Then MessageBox.Show("The first " & checkrows.ToString & " rows in ListView1 match a row in ListView2")

检查listview1中的前3项是否与listview2的项目匹配

2 个答案: