阻止从vb.net中的多个checkedlistbox检查相同的项目

Question

如果我有2个checkedlistbox（s），每个都有相同的项目，例如：apple，banana。如何防止用户从两个checkedlistbox中检查相同的项目。案例：用户无法检查苹果和苹果（来自checkedlistbox1和checkedlistbox2）。谢谢..

Answer 1

我建议你该按钮的点击检查两个CheckBoxList的代码为“检查来自checkedlistbox相同的项目进行检查或不”

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click 
    For i As Integer = 0 To CheckedListBox1.Items.Count - 1 
     If CheckedListBox1.GetItemChecked(i) = True And CheckedListBox2.GetItemChecked(i) = True Then 
      MsgBox("checking same item from both checkedlistbox are not allowed") 
     End If 
    Next 
    End Sub