IVCCollection.Item(Object) 方法

参考

定义

命名空间:: Microsoft.VisualStudio.VCProjectEngine

程序集:: Microsoft.VisualStudio.VCProjectEngine.dll

程序集:

重要

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在集合中选择一项。

public:
 System::Object ^ Item(System::Object ^ Index);

public:
 Platform::Object ^ Item(Platform::Object ^ Index);

winrt::Windows::Foundation::IInspectable Item(winrt::Windows::Foundation::IInspectable const & Index);

[System.Runtime.InteropServices.DispId(0)]
public object Item (object Index);

[<System.Runtime.InteropServices.DispId(0)>]
abstract member Item : obj -> obj

Public Function Item (Index As Object) As Object

参数

Index: Object

一个表示集合中项的索引的对象。

Object

集合中的一项。

属性: DispIdAttribute

示例

下面的示例演示如何使用 EnablePREfast 和 AdditionalOptions 属性设置 /analyze:WX- 开关。 (这两个属性都是必需的。 ) 指定 /analyze:WX- 表示在用编译时不会将代码分析警告视为错误 /WX 。有关详细信息，请参阅 /analyze (代码分析) 。

' Add reference to Microsoft.VisualStudio.VCProjectEngine.  
Imports System  
Imports EnvDTE  
Imports EnvDTE80  
Imports System.Diagnostics  
Imports Microsoft.VisualStudio.VCProjectEngine  
Imports System.Text  

Sub EnablePREfastExample(ByVal dte As DTE2)  
    Dim prj As VCProject  
    Dim cfgs, tools As IVCCollection  
    Dim cfg As VCConfiguration  
    Dim tool As VCCLCompilerTool  
    Dim sb As New StringBuilder  

    prj = CType(dte.Solution.Projects.Item(1).Object, _  
      Microsoft.VisualStudio.VCProjectEngine.VCProject)  
    cfgs = CType(prj.Configurations, _  
      Microsoft.VisualStudio.VCProjectEngine.IVCCollection)  
    cfg = CType(cfgs.Item(1), _  
      Microsoft.VisualStudio.VCProjectEngine.VCConfiguration)  
    tool = CType(cfg.Tools("VCCLCompilerTool"), _  
      Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool)  

    sb.Length = 0  
    sb.Append("Current project PREfast setting: " _  
      & tool.EnablePREfast & Environment.NewLine)  
    sb.Append("Flag: " & tool.AdditionalOptions)  
    MsgBox(sb.ToString)  

    ' Toggle PREfast setting.  
    If Not (tool.EnablePREfast = True) Then  
        ' PREfast is not enabled. Turn it and the WX- flag on.  
        tool.EnablePREfast = True  
        tool.AdditionalOptions = "/analyze:WX-"  
    Else  
        ' Toggle the opposite.  
        tool.EnablePREfast = False  
        tool.AdditionalOptions = "/analyze:WX"  
    End If  
    sb.Length = 0  
    sb.Append("New project PREfast setting: " _  
      & tool.EnablePREfast & Environment.NewLine)  
    sb.Append("Flag: " & tool.AdditionalOptions)  
    MsgBox(sb.ToString)  
End Sub

// Add references to Microsoft.VisualStudio.VCProjectEngine and   
// System.Windows.Forms.  
using System;  
using Extensibility;  
using EnvDTE;  
using EnvDTE80;  
using Microsoft.VisualStudio.VCProjectEngine;  
using System.Text;  
using System.Windows.Forms;  

public void EnablePREfastExample(DTE2 dte)  
{  
    try  
    {  
        VCProject prj;  
        IVCCollection cfgs, tools;  
        VCConfiguration cfg;  
        VCCLCompilerTool tool;  
        StringBuilder sb = new StringBuilder();  

        prj = (Microsoft.VisualStudio.VCProjectEngine.VCProject)  
          dte.Solution.Projects.Item(1).Object;  
        cfgs =   
          (Microsoft.VisualStudio.VCProjectEngine.IVCCollection)  
          prj.Configurations;  
        cfg =   
          (Microsoft.VisualStudio.VCProjectEngine.VCConfiguration)  
           cfgs.Item(1);  
        tools =   
          (Microsoft.VisualStudio.VCProjectEngine.IVCCollection)  
          cfg.Tools;  
        tool =   
          (Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool)  
          tools.Item("VCCLCompilerTool");  

        sb.Length = 0;  
        sb.Append("Current project PREfast setting: " +  
          tool.EnablePREfast + Environment.NewLine);  
        sb.Append("Flag: " + tool.AdditionalOptions);  
        MessageBox.Show(sb.ToString());  

        // Toggle PREfast setting.  
        if (!(tool.EnablePREfast == true))  
        {  
            // PREfast is not enabled. Turn it and the WX- flag on.  
            tool.EnablePREfast = true;  
            tool.AdditionalOptions = "/analyze:WX-";  
        }  
        else  
        {  
            // Toggle the opposite.  
            tool.EnablePREfast = false;  
            tool.AdditionalOptions = "/analyze:WX";  
        }  
        sb.Length = 0;  
        sb.Append("New project PREfast setting: " +  
          tool.EnablePREfast + Environment.NewLine);  
        sb.Append("Flag: " + tool.AdditionalOptions);  
        MessageBox.Show(sb.ToString());  
    }  
    catch (System.Exception errmsg)  
    {  
        MessageBox.Show("ERROR! " + errmsg.Message);  
    }  
}

注解

您可以提供一个从1开始的数字，它是集合中某个项的索引，也可以提供一个表示集合中项的名称的带引号的字符串。

适用于

IVCCollection.Item(Object) 方法

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