vb.net列表全选元素 vbnet list

vb.net中控件ListBox的多项选择与输出!Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
MessageBox.Show(ListBox1.SelectedItem.ToString)
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
For i As Integer = 0 To 10
ListBox1.Items.Add(i.ToString)
Next
End Sub
'''''''选择多项
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
For i As Integer = 0 To 10
ListBox1.Items.Add(i.ToString)
Next
ListBox1.SelectionMode = SelectionMode.MultiSimple
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim item
For Each item In ListBox1.SelectedItems
MessageBox.Show(item.ToString)
Next
End Sub
vb.net textbox1.text 鼠标一点 全部选择Private Sub TextBox1_Click(sender As Object, e As EventArgs) Handles TextBox1.Click
TextBox1.SelectAll()
TextBox1.ForeColor = Color.Blue
End Sub
如果不想每次都这样的话,就加一个if判断TextBox1.ForeColor 是否是Color.Blue就可以了
vb.net中如何实现checkbox的全选?参考方法如下:
$("input[type='checkbox']").attr("checked",true);
用js这样就行了,如果用C#,参考如下:
foreach (Control item in this.Controls)
{
if (item is CheckBox)
{
CheckBox box = (CheckBox)item;
box.Checked = true;
}
}
VB.NET 如何将ListBox列表框的所有项复制到一个数组中,便于排序?谢谢解答Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim ListboxTotalItem As Integer = ListBox1.Items.Count - 1
Dim a(ListboxTotalItem) As String
For i As Integer = 0 To ListboxTotalItem
a(i) = i
Next
Label1.Text = a(5)
End Sub
End Class
-------------
一个Form1
一个Label1
一个Listbox1
一个Button1
在Listbox1中加入10个值
-------------
只是一个演示,其他的要靠自己 。
vb.net textbox1.selectAll()SelectAll其实已经把所有文本选上了vb.net列表全选元素 , 只不过没有高亮而已,但是你可以自己模拟一个选择高亮vb.net列表全选元素:
r.SelectAll()
r.SelectionColor = System.Drawing.Color.White ' 文字色
r.SelectionBackColor = System.Drawing.Color.Navy ' 背景色
vb.net 数组vb.net已经去掉了控件数组这个类,不过有个代替该方式的一个属性:Tag,你可以把这些关联的Tag属性设置为同一标记,如:a 。然后遍历所有的checkbox并且tag为a的则选定:Protected Sub chkAll_Click()For Each ctl As Control In Me.Controls''如果checkbox在一个容器里,比如groupbox , 那可以用groupbox.controls
If ctl.GetType().Name.ToLower() = "checkbox" Then
CType(ctl, CheckBox).Checked = CheckBox3.Checked
End If
NextEnd Sub
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