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BuildItemGroup Class

Represents a collection of BuildItem objects.

Namespace: Microsoft.Build.BuildEngine
Assembly: Microsoft.Build.Engine (in microsoft.build.engine.dll)

public class BuildItemGroup : IEnumerable
public class BuildItemGroup implements IEnumerable
public class BuildItemGroup implements IEnumerable
Not applicable.

A BuildItemGroup object can represent an ItemGroup element in the project, or a virtual collection of items, containing the items created after evaluating wildcards in the Include and Exclude attributes of an Item element.

The following example creates a Project object and uses the LoadXml method to add content to the project. The BuildItem, BuildItemGroup, and BuildItemGroupCollection classes are used to add, remove, and change items in the project.

using System;
using System.Collections.Generic;
using System.Text;

using Microsoft.Build.BuildEngine;

namespace AddNewItem
{
    class Program
    {
        /// <summary>
        /// This code demonstrates the use of the following methods:
        ///     Engine constructor
        ///     Project constructor
        ///     Project.LoadFromXml
        ///     Project.Xml
        ///     BuildItemGroupCollection.GetEnumerator
        ///     BuildItemGroup.GetEnumerator
        ///     BuildItem.Name (get)
        ///     BuildItem.Include (set)
        ///     BuildItem.GetMetadata
        ///     BuildItem.SetMetadata
        ///     BuildItemGroup.RemoveItem
        ///     BuildItemGroup.AddNewItem
        /// </summary>
        /// <param name="args"></param>
        static void Main(string[] args)
        {
            // Create a new Engine object.
            Engine engine = new Engine(Environment.CurrentDirectory);

            // Create a new Project object.
            Project project = new Project(engine);

            // Load the project with the following XML, which contains
            // two ItemGroups.
            project.LoadXml(@"
                <Project xmlns='http://schemas.microsoft.com/developer/msbuild/2003'>

                    <ItemGroup>
                        <Compile Include='Program.cs'/>
                        <Compile Include='Class1.cs'/>
                        <RemoveThisItemPlease Include='readme.txt'/>
                    </ItemGroup>

                    <ItemGroup>
                        <EmbeddedResource Include='Strings.resx'>
                            <LogicalName>Strings.resources</LogicalName>
                            <Culture>fr-fr</Culture>
                        </EmbeddedResource>
                    </ItemGroup>

                </Project>
                ");

            // Iterate through each ItemGroup in the Project.  There are two.
            foreach (BuildItemGroup ig in project.ItemGroups)
            {
                BuildItem itemToRemove = null;

                // Iterate through each Item in the ItemGroup.
                foreach (BuildItem item in ig)
                {
                    // If the item's name is "RemoveThisItemPlease", then
                    // store a reference to this item in a local variable,
                    // so we can remove it later.
                    if (item.Name == "RemoveThisItemPlease")
                    {
                        itemToRemove = item;
                    }

                    // If the item's name is "EmbeddedResource" and it has a metadata Culture
                    // set to "fr-fr", then ...
                    if ((item.Name == "EmbeddedResource") && (item.GetMetadata("Culture") == "fr-fr"))
                    {
                        // Change the item's Include path to "FrenchStrings.fr.resx", 
                        // and add a new metadata Visiable="false".
                        item.Include = @"FrenchStrings.fr.resx";
                        item.SetMetadata("Visible", "false");
                    }
                }

                // Remove the item named "RemoveThisItemPlease" from the
                // ItemGroup
                if (itemToRemove != null)
                {
                    ig.RemoveItem(itemToRemove);
                }

                // For each ItemGroup that we found, add to the end of it
                // a new item Content with Include="SplashScreen.bmp".
                ig.AddNewItem("Content", "SplashScreen.bmp");
            }

            // The project now looks like this:
            //
            //     <?xml version="1.0" encoding="utf-16"?>
            //     <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
            //       <ItemGroup>
            //         <Compile Include="Program.cs" />
            //         <Compile Include="Class1.cs" />
            //         <Content Include="SplashScreen.bmp" />
            //       </ItemGroup>
            //       <ItemGroup>
            //         <EmbeddedResource Include="FrenchStrings.fr.resx">
            //           <LogicalName>Strings.resources</LogicalName>
            //           <Culture>fr-fr</Culture>
            //           <Visible>false</Visible>
            //         </EmbeddedResource>
            //         <Content Include="SplashScreen.bmp" />
            //       </ItemGroup>
            //     </Project>
            //
            Console.WriteLine(project.Xml);
        }
    }
}

System.Object
  Microsoft.Build.BuildEngine.BuildItemGroup

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0
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