在visual basic窗体面板中检查复选框并找到哪些选中的语法是什么?我理解我如何使用for循环和if语句,但我对于检查每个复选框的语法感到困惑。例如:
Dim i As Integer
For i = 1 To 10
'Here is where my code would go.
'I could have ten checkboxes named in sequence (cb1, cb2, etc),
'but how could I put i inside the name to test each checkbox?
Next
答案 0 :(得分:8)
您需要遍历已添加Checkbox的控件的Controls集合。每个Control对象都有一个Controls集合。在这种情况下,我更喜欢For Each循环,因此我可以立即获得Control而无需使用Controls索引。如果您的CheckBox直接添加到Panel,最简单的方法就是..
For Each ctrl As var In panel.Controls
If TypeOf ctrl Is CheckBox AndAlso DirectCast(ctrl, CheckBox).IsChecked Then
'Do Something
End If
Next
答案 1 :(得分:2)
我对VB.Net语法不太熟悉,但是在psudo-code中:
ForEach CheckBox in ControlContainer
DoSomething
Next
如果您将所有CheckBox控件放在一个容器中 - 例如Panel
- 然后上面的代码将迭代 a CheckBox
的每个控件。
答案 2 :(得分:0)
试试这个:
Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
If CheckBoxList1.Text = "" Then
do/display something
Exit Sub
Else
For Each item As ListItem In CheckBoxList1.Items
If item.Selected Then
do/display something
End If
Next
End If
End Sub