根据列表的大小使按钮消失 [英] Making buttons disappear depending on the size of a list

问题描述

当用户填充的列表大小达到 3 个项目时，我试图让按钮从屏幕上消失.

I am trying to make a button disappear off the screen when the size of a list that is being filled by the user reaches a size of lets say 3 items.

该按钮用于添加一个新人"，但是一旦列表已满，我不希望它成为将另一个人添加到列表中的选项.

The button is for "adding a new person" but once the list is full i don't want that to be an option to add another person to the list.

我尝试了以下代码，但程序没有运行

I have tried the following code but the program doesn't run

Private Sub Form1_MouseMove(sender As Object, e As MouseEventArgs) Handles Me.MouseMove

    If inputNames.Count >= 3 Then   'inputnames is the name of the list
        Button1.Visible = False     'button 1 is the add a new person button
    End If
End Sub

有人可以帮我吗?该程序甚至没有打开.当列表中的元素数量大于特定数字时，我只想让按钮消失，现在只说 3

could someone please help me? the program doesn't even open. I just want the button to go away when the number of elements in a list is greater than a specific number lets just say 3 for now

我还可以为我的程序包含其余的代码

I can also include the rest of the code for my program

推荐答案

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    If ListBox1.Items.Count >= 2 Then
        'your add code
        Button2.Visible = False
    End If
End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    If ListBox1.Items.Count >= 2 Then
        Button2.Visible = False
    End If
End Sub

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