.NET中的自定义控件 [英] Custom Control in .NET

问题描述

嗨......
我在制作可自定义控件的电线"时陷入困境，该控件可以连接两个单选按钮(在窗体上)，并且能够将第一个单选按钮的值发送到由该控件联合的下一个单选按钮....
plzz help ....

hi....
I am stuck while making a "wire like custom control" which can join two radio button (on a form), And able to send the value of first radio button to the next radio button which is joint by that control....
plzz help....

推荐答案

使用下面为我设计的代码:

Use this code which I design for you :

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Data
Imports System.Text
Imports System.Windows.Forms
Public Class RadioButtonPair
    Inherits UserControl
    Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton
    Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents GroupBox2 As System.Windows.Forms.GroupBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    
    Private Sub InitializeComponent()
        Me.RadioButton1 = New System.Windows.Forms.RadioButton
        Me.RadioButton2 = New System.Windows.Forms.RadioButton
        Me.Label1 = New System.Windows.Forms.Label
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.GroupBox2 = New System.Windows.Forms.GroupBox
        Me.GroupBox1.SuspendLayout()
        Me.GroupBox2.SuspendLayout()
        Me.SuspendLayout()
        '
        'RadioButton1
        '
        Me.RadioButton1.AutoSize = True
        Me.RadioButton1.Location = New System.Drawing.Point(5, 10)
        Me.RadioButton1.Name = "RadioButton1"
        Me.RadioButton1.Size = New System.Drawing.Size(14, 13)
        Me.RadioButton1.TabIndex = 0
        Me.RadioButton1.TabStop = True
        Me.RadioButton1.UseVisualStyleBackColor = True
        '
        'RadioButton2
        '
        Me.RadioButton2.AutoSize = True
        Me.RadioButton2.Location = New System.Drawing.Point(5, 11)
        Me.RadioButton2.Name = "RadioButton2"
        Me.RadioButton2.Size = New System.Drawing.Size(14, 13)
        Me.RadioButton2.TabIndex = 1
        Me.RadioButton2.TabStop = True
        Me.RadioButton2.UseVisualStyleBackColor = True
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Location = New System.Drawing.Point(23, 11)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(64, 13)
        Me.Label1.TabIndex = 2
        Me.Label1.Text = "-------------------"
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.RadioButton1)
        Me.GroupBox1.Location = New System.Drawing.Point(4, 2)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(22, 27)
        Me.GroupBox1.TabIndex = 3
        Me.GroupBox1.TabStop = False
        '
        'GroupBox2
        '
        Me.GroupBox2.Controls.Add(Me.RadioButton2)
        Me.GroupBox2.Location = New System.Drawing.Point(80, 2)
        Me.GroupBox2.Name = "GroupBox2"
        Me.GroupBox2.Size = New System.Drawing.Size(22, 29)
        Me.GroupBox2.TabIndex = 4
        Me.GroupBox2.TabStop = False
        '
        'RadioButtonPair
        '
        Me.Controls.Add(Me.GroupBox2)
        Me.Controls.Add(Me.GroupBox1)
        Me.Controls.Add(Me.Label1)
        Me.Name = "RadioButtonPair"
        Me.Size = New System.Drawing.Size(115, 35)
        Me.GroupBox1.ResumeLayout(False)
        Me.GroupBox1.PerformLayout()
        Me.GroupBox2.ResumeLayout(False)
        Me.GroupBox2.PerformLayout()
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

    Public Sub New()
        InitializeComponent()
        AddHandler Me.Click, AddressOf RadioButton_Cecked
        AddHandler Me.Label1.Click, AddressOf RadioButton_Cecked
    End Sub

    Private Sub RadioButton_Cecked(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If RadioButton1.Checked = True Then
            RadioButton1.Checked = False
            RadioButton2.Checked = False
        Else
            RadioButton1.Checked = True
            RadioButton2.Checked = True
        End If
    End Sub
End Class

希望对您有帮助.如果是，那么给5分.

I hope it will help you.If so then give 5Points.

这也许是您的意思吗?

Is this what you mean perhaps?

protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
    {
        RadioButton2.Checked = true;
        changeCustomControl();
    }
    protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
    {
        RadioButton1.Checked = true;
        changeCustomControl();
    }

    protected void changeCustomControl()
    {
        //Put code to change the custom control here
    }

还请记住，单选按钮的GroupName属性必须不同，否则不能同时检查它们.

希望这会有所帮助！
-Erlend

Also remember that the GroupName property of the radio buttons has to differ or else they cannot both be checked at the same time.

Hope this helps!
-Erlend

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