自定义控件-属性框中的可单击链接 [英] Custom Control - Clickable link in properties box

问题描述

我正在使用C＃进行自定义控件，并且需要向属性框添加一个链接（以便单击该窗体即可显示它）。

I'm making a custom control using C#, and I need to add a link to the property box(so I can show a form once it's clicked).

这里有个例子：

推荐答案

您正在寻找 DesignerVerb 。

You are looking for DesignerVerb.

设计者动词是链接到事件处理程序的菜单命令。在设计时，设计师
动词已添加到组件的快捷菜单中。在
Visual Studio中，还使用LinkLabel在属性窗口的描述窗格中列出了每个设计器动词。

A designer verb is a menu command linked to an event handler. Designer verbs are added to a component's shortcut menu at design time. In Visual Studio, each designer verb is also listed, using a LinkLabel, in the Description pane of the Properties window.

您可以使用动词来设置单个属性，多个属性的值，或者例如仅用于显示一个About框。

You can use a verb for setting value of a single property, multiple properties or for example for just showing an about box.

示例：

为您的控件或从 ControlDesigner 类或 ComponentDesigner （对于组件）覆盖 动词 属性，并返回动词集合。

Create a designer for your control or for your component deriving from ControlDesigner class or ComponentDesigner (for components) an override Verbs property and return a collection of verbs.

别忘了添加对 System.Design.dll 的引用。

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;
[Designer(typeof(MyControlDesigner))]
public class MyControl : Control
{
    public string SomeProperty { get; set; }
}
public class MyControlDesigner : ControlDesigner
{
    private void SomeMethod(object sender, EventArgs e)
    {
        MessageBox.Show("Some Message!"); 
    }
    private void SomeOtherMethod(object sender, EventArgs e)
    {
        var p = TypeDescriptor.GetProperties(this.Control)["SomeProperty"];
        p.SetValue(this.Control, "some value"); /*You can show a form and get value*/
    }
    DesignerVerbCollection verbs;
    public override System.ComponentModel.Design.DesignerVerbCollection Verbs
    {
        get
        {
            if (verbs == null)
            {
                verbs = new DesignerVerbCollection();
                verbs.Add(new DesignerVerb("Do something!", SomeMethod));
                verbs.Add(new DesignerVerb("Do something else!", SomeOtherMethod));
            }
            return verbs;
        }
    }
}

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