Help2.Filter 属性

定义

获取或设置集合筛选器。

public:
 property System::String ^ Filter { System::String ^ get(); void set(System::String ^ value); };
public:
 property Platform::String ^ Filter { Platform::String ^ get(); void set(Platform::String ^ value); };
[System.Runtime.InteropServices.DispId(22)]
public string Filter { [System.Runtime.InteropServices.DispId(22)] get; [System.Runtime.InteropServices.DispId(22)] set; }
[<System.Runtime.InteropServices.DispId(22)>]
[<get: System.Runtime.InteropServices.DispId(22)>]
[<set: System.Runtime.InteropServices.DispId(22)>]
member this.Filter : string with get, set
Public Property Filter As String

属性值

String

返回一个包含筛选器名称的字符串。

实现

属性

示例

使用创建外接程序, Visual Studio Visual C# 如 如何:创建外接程序中所述。 添加对 Microsoft.VisualStudio.VSHelpMicrosoft.VisualStudio.VSHelp80 和的引用 System.Windows.Forms 。 将 OnConnection Connect.cs 文件中方法中的代码替换为以下代码。 按照 如何:编译和运行自动化对象模型代码示例中所述运行代码示例。

备注

运行此示例之前,请务必在帮助集合上设置筛选器 Visual Studio 。 否则,该方法将返回 null 异常。

using System;  
using Extensibility;  
using EnvDTE;  
using EnvDTE80;  
using Microsoft.VisualStudio.VSHelp;  
using Microsoft.VisualStudio.VSHelp80;  
using System.Windows.Forms;  

public void OnConnection(object application,  
ext_ConnectMode connectMode, object addInInst, ref Array custom)  
{  
    _applicationObject = (DTE2)application;  
    _addInInstance = (AddIn)addInInst;  
    HelpFilterExample(_applicationObject);  
}  

public void HelpFilterExample(DTE2 dte)  
{  
    // This add-in displays a message box with the filter applied to   
    // the active Help collection.  
    // inIt then changes the filter  
    // and displays the Contents window of Document   
    // Explorer with the new filter applied.  
    try  
    {  
        Microsoft.VisualStudio.VSHelp80.Help2 help2 =  
(Microsoft.VisualStudio.VSHelp80.Help2)_applicationObject.GetObject ("Help2");  

        // Display the name of the filter.  
        MessageBox.Show("The Help filter name is: "  
help2.Filter.ToString());  
        // Set the filter to Visual C#.  
        help2.Filter = "Visual C#";  
        // Set the focus to the Contents window and  
        // open Document Explorer.  
        help2.Contents();  
    }  
    catch (SystemException ex)  
    {  
        MessageBox.Show("ERROR: " + ex);  
    }  
}  

适用于