用Visual studio 创建自定义控件

系统管理员 2022-08-26 15:12 151阅读 0赞

想了解一下自定义控件的知识，不过，在自定义控件在工具条上显示，花了些时间。

最后是出来的，但这里不想仔细找原因了，大至总结几个可能的点：

1. 新建windows forms control library工程

![20140421093704453][]

2. vs设置如下：

![Center][]

工具-》选项-》Windows窗体设计器-》常规-》工具箱-》AutoToolBoxPopulate 改为TRUE

![20140421093520015][]

vs 2010所在位置，这个图有错误，是toolbax下面那个。

**2. 检查项目的.NET Framework项目的版本是否和开发控件的.NET版本一致**

寻找方法，喜爱敏捷，实践方法，不断总结，坚持到底，终将成功。  
  
3. 基类最好用完整空间名称

public partial class UserControl1 : System.Windows.Forms.Button

.designer.cs 最好删除

4. 添加这两段：

*  Add the following code to the Declarations section:
    
    ``
    
        using System.ComponentModel.Design;
 *  Apply the **System.ComponentModel.DesignerAttribute** attribute to the control as follows:
    
    ``
    
        [Designer("System.Windows.Forms.Design.ParentControlDesigner, System.Design", typeof(IDesigner))] 
        public class UserControl1 : System.Windows.Forms.UserControl
        {
        
              ...
        
        }
    
    5. 要重新编译。
    
    6.最后自动就会出来。
 *  
 *  ![20140421093709703][]  
    
    
    ===================
    
        [
            Category("Gradient"),
            Description("First Gradient Color")
        ]
    
    ========================
    
    一些链接
    
    https://workspaces.codeproject.com/haoyujie/writing-your-custom-control-step-by-step  
    
    
    http://support.microsoft.com/default.aspx?scid=kb;en-us;813450
    
    http://www.codeproject.com/Articles/837/Your-first-C-control
    
    http://www.cnblogs.com/jerryjaord/archive/2011/05/09/2040805.html  
    
    
    =====================  
    
    
    ### Overview ###
    
      
    By default, a **UserControl** object can act as a control container only when you create the control. To make a**UserControl** host a constituent control after you put the **UserControl** on a Windows Form, you must change the default designer of the**UserControl**. To implement design-time services for a component, use the**DesignerAttribute** class of the **System.ComponentModel** namespace. The**DesignerAttribute** comes before the class declaration. Initialize the**DesignerAttribute** by passing the **designerTypeName** and the**designerBaseType** parameters.  
      
    **designerTypeName** is the fully qualified name of the designer type that provides design-time services. Pass the combination of the**System.Windows.Forms.Design.ParentControlDesigner** and the **System.Design** for the **designerTypeName** parameter. The **ParentControlDesigner** class extends design-time behavior for a  **UserControl**.  
      
    **designerBaseType** is the name of the base class for the designer. The class that is used for the design-time services must implement the IDesigner interface.  
      
      
    
    
    ### Create the UserControl as a Design-Time Control Container ###
    
    1.  Create a new Visual C\# Windows Control Libraryproject. To do this, follow these steps:
        
        1.  Start Visual Studio.
        2.  On the **File** menu, point to**New**, and then click **Project**.
        3.  Under **Project Types**, click**Visual C\#** , and then click **Windows Forms Control Library** under **Templates**.  
              
            **Note** In Visual Studio 2003, click **Visual C\# Projects** under**Project Types** and then click **Windows Control Library** under  **Templates**.
    2.  Name the projectContainerUserControl. By default,**UserControl1.cs** is created.
    3.  In Solution Explorer, right-click**UserControl1.cs**, and then click**ViewCode**.
    4.  Add the following code to the Declarations section:
        
        ``
        
            using System.ComponentModel.Design;
    5.  Apply the **System.ComponentModel.DesignerAttribute** attribute to the control as follows:
        
        ``
        
            [Designer("System.Windows.Forms.Design.ParentControlDesigner, System.Design", typeof(IDesigner))] 
            public class UserControl1 : System.Windows.Forms.UserControl
            {
            
                  ...
            
            }
    6.  On the **Build** menu, click  **BuildSolution**.
    
      
      
    
    
    ### Test the UserControl ###
    
    1.  Create a new Visual C\# project. To do this, follow thesesteps:
        
        1.  Start Visual Studio.
        2.  On the **File** menu, point to**New**, and then click **Project**.
        3.  Under **Project Types**, click**Visual C\#**, and then click **Windows Forms Application** under  **Templates**. By default,**Form1.cs** is created.  
              
            **Note** In Visual Studio 2003, click **Visual C\# Projects** under**Project Types**, and then click **Windows Control Library** under  **Templates**.
    2.  Add the **UserControl1** control to the toolbox.
        
        1.  On the **Tools** menu, click**Choose Toolbox Items**.
        2.  On the **.NET Framework Components** tab, click**Browse**.
        3.  In the **Open File** box, locate the DLL that was built when you created the**UserControl** control.
    3.  Drag **UserControl1** from the toolbox (underWindows Forms) to**Form1.cs**.
    4.  Drag a **Button** control from the toolbox to**UserControl1**.
    5.  Notice that the **UserControl1** behaves ascontrol container for the**Button** control.
    
      
    
    
    [![uparrow.gif][]Back to the top][uparrow.gif_Back to the top] | [Give Feedback][]
    
    ## ![Collapse image][]REFERENCES ##
    
    For more information, see the following Microsoft Web sites:  
      
    
    
    ParentControlDesigner Class  
    [http://msdn.microsoft.com/en-us/library/system.windows.forms.design.parentcontroldesigner(VS.71).aspx][http_msdn.microsoft.com_en-us_library_system.windows.forms.design.parentcontroldesigner_VS.71_.aspx]  
      
    DesignerAttribute Class  
    [http://msdn.microsoft.com/en-us/library/system.componentmodel.designerattribute(vs.71).aspx][http_msdn.microsoft.com_en-us_library_system.windows.forms.design.parentcontroldesigner_VS.71_.aspx]

[20140421093704453]: /images/20220824/05593550fa6e4e958bccf2ba8e2a9aba.png
[Center]: /images/20220824/8b7f3719ad714ecda3d8de9d7aea3160.png
[20140421093520015]: /images/20220824/9fe92b91e8ad4ba7903d9207f009d981.png
[20140421093709703]: /images/20220824/99b2e78012174b129b68b74f0eb5b3de.png
[uparrow.gif]: /images/20220824/d57011a5a1924396a9c8331afe43dcbb.png
[uparrow.gif_Back to the top]: http://support.microsoft.com/default.aspx?scid=kb;en-us;813450#top
[Give Feedback]: http://support.microsoft.com/default.aspx?scid=kb;en-us;813450#survey
[Collapse image]: /images/20220824/69339807e5e74b3fb4dc0884ac0ea62d.png
[http_msdn.microsoft.com_en-us_library_system.windows.forms.design.parentcontroldesigner_VS.71_.aspx]: http://msdn.microsoft.com/en-us/library/system.windows.forms.design.parentcontroldesigner%28VS.71%29.aspx