vb.net生成控件,VB常用控件
vb.net 动态生成的控件,事件也动态加,怎么做呢?
你需要的应该是反射,类似如下,我测试通过的:
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Imports System.Reflection
Public Class Form1
Public Sub MMMToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles MMMToolStripMenuItem.Click
MsgBox("menu click")
End Sub
'在按钮事件处理里面通过反射名称调用相应菜单事件
Public Sub CallEventMethod(sender As Object, e As EventArgs)
Dim b As Button = sender '获取点击的按钮
'拼接菜单事件名称
Dim MethodName As String = b.Name "ToolStripMenuItem_Click"
Dim t As Type = Me.GetType
Dim m As MethodInfo = t.GetMethod(MethodName)
'反射方法
m.Invoke(Me, New Object() {Nothing, Nothing})
End Sub
'动态生成了按钮
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim btn As New Button
btn.Location = New Point(100, 100)
btn.Name = "MMM" '关键
btn.Text = "MMM"
'注册事件
AddHandler btn.Click, AddressOf Me.CallEventMethod
Me.Controls.Add(btn)
End Sub
End Class
VB.NET 如何做 控件
用vs.net创建控件项目,其他的和vb类似...
新建项目-windows 窗体控件库
VB.NET中如何动态创建控件
Option Explicit
Private WithEvents NewTextBox As TextBox
'通过使用WithEvents关键字声明一个对象变量为新的命令按钮
Private Sub Command1_Click()
If NewTextBox Is Nothing Then
Set NewTextBox = Controls.Add("VB.TextBox", "cmdNew", Form1)
NewTextBox.Move 200, 200
NewTextBox.Width = Form1.Width - 450
NewTextBox.Height = Form1.Height - 1400
NewTextBox.Visible = True
End If
End Sub
Private Sub Command2_Click()
If NewTextBox Is Nothing Then
Exit Sub
Else
Controls.Remove NewTextBox
Set NewTextBox = Nothing
End If
End Sub
VB.NET 如何引用动态生成控件?
似有控件遍历窗体控件集合,或在控件集合中查询该控件名字,公用控件直接名字
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