[英]Issue Preventing Duplicates from Being Added to a Listbox When Listbox Contains Items Loaded from a Save File
[英]when trying to save listbox items to text file i get error
所以我试图将所有listbox1项目都制作为文本文件,并且不断收到错误“'item'不是'String()'的成员”
我在哪里得到错误: w.WriteLine(ListBox1.items.Item(i))
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
IO.Directory.CreateDirectory("C:\ProxyGrabber")
Dim w As New IO.StreamWriter("C:\ProxyGrabbe\test.txt")
Dim i As Integer
For i = 0 To ListBox1.items.Count - 1
w.WriteLine(ListBox1.items.Item(i))
Next
w.Close()
End Sub
ListBox1.items.Item(i)
返回对象类型。 如果列表框项只是字符串,那么您要做的就是更改
w.WriteLine(ListBox1.items.Item(i))
至
w.WriteLine(CType(ListBox1.Items.Item(i), String))
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