我有一个带有AutoCompleteMode = SuggestAppend和AutoCompleteSource = ListItems的组合框。
在SuggestAppend中,当用户输入字符时,列表框控件将自动过滤。
我想在用户输入期间获取列表框中的项目数。 在开始时,列表框已完全填充。
我尝试了以下操作,但它总是返回组合中的项目数,而不是列表框中已过滤项目的数量
int count = ItemsComboBox.Items.Count.ToString();
答案 0 :(得分:0)
这对我有用,但我将AutoCompleteMode = SuggestAppend
更改为AutoCompleteMode = Suggest
Public Class Form2
Private Sub Form2_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Me.ComboBox1.Text = ""
Me.ComboBox1.Items.Add("a")
Me.ComboBox1.Items.Add("aaa")
Me.ComboBox1.Items.Add("combo")
Me.ComboBox1.Items.Add("combobox")
Me.ComboBox1.Items.Add("combobox test")
Me.ComboBox1.Items.Add("common")
Me.ComboBox1.Items.Add("common dialog")
End Sub
Private Sub ComboBox1_TextChanged(sender As Object, e As System.EventArgs) Handles ComboBox1.TextChanged
Dim count As Integer = 0
For Each op As String In ComboBox1.Items
If (op Is Nothing OrElse op.Length < ComboBox1.Text.Length) Then
Continue For
End If
If (ComboBox1.Text = op.Substring(0, ComboBox1.Text.Length)) Then
count += 1
End If
Next
Label1.Text = count
End Sub
End Class