BuildPropertyGroup Class

Definition

public ref class BuildPropertyGroup : System::Collections::IEnumerable

public class BuildPropertyGroup : System.Collections.IEnumerable

type BuildPropertyGroup = class
    interface IEnumerable

Public Class BuildPropertyGroup
Implements IEnumerable

Inheritance

Object

BuildPropertyGroup

Implements

IEnumerable

Examples

The following example creates a Project object and uses the LoadXml method to add content to the project. The BuildProperty, BuildPropertyGroup, and BuildPropertyGroupCollection 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 AddNewProperty
{
    class Program
    {
        /// <summary>
        /// This code demonstrates the use of the following methods:
        ///     Engine constructor
        ///     Project constructor
        ///     Project.LoadFromXml
        ///     Project.Xml
        ///     BuildPropertyGroupCollection.GetEnumerator
        ///     BuildPropertyGroup.GetEnumerator
        ///     BuildProperty.Name (get)
        ///     BuildProperty.Value (set)
        ///     BuildPropertyGroup.RemoveProperty
        ///     BuildPropertyGroup.AddNewProperty
        /// </summary>
        static void Main()
        {
            // 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 PropertyGroups.
            project.LoadXml(@"
                <Project xmlns='http://schemas.microsoft.com/developer/msbuild/2003'>

                    <PropertyGroup>
                        <Optimize>true</Optimize>
                        <WarningLevel>4</WarningLevel>
                    </PropertyGroup>

                    <PropertyGroup>
                        <OutputPath>bin\debug\</OutputPath>
                        <RemoveThisPropertyPlease>1</RemoveThisPropertyPlease>
                    </PropertyGroup>

                </Project>
                ");

            // Iterate through each PropertyGroup in the Project.  There are two.
            foreach (BuildPropertyGroup pg in project.PropertyGroups)
            {
                BuildProperty propertyToRemove = null;

                // Iterate through each Property in the PropertyGroup.
                foreach (BuildProperty property in pg)
                {
                    // If the property's name is "RemoveThisPropertyPlease", then
                    // store a reference to this property in a local variable,
                    // so we can remove it later.
                    if (property.Name == "RemoveThisPropertyPlease")
                    {
                        propertyToRemove = property;
                    }

                    // If the property's name is "OutputPath", change its value
                    // from "bin\debug\" to "bin\release\".
                    if (property.Name == "OutputPath")
                    {
                        property.Value = @"bin\release\";
                    }
                }

                // Remove the property named "RemoveThisPropertyPlease" from the
                // PropertyGroup
                if (propertyToRemove != null)
                {
                    pg.RemoveProperty(propertyToRemove);
                }

                // For each PropertyGroup that we found, add to the end of it
                // a new property called "MyNewProperty".
                pg.AddNewProperty("MyNewProperty", "MyNewValue");
            }

            // The project now looks like this:
            //
            //     <?xml version="1.0" encoding="utf-16"?>
            //     <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
            //         <Optimize>true</Optimize>
            //         <WarningLevel>4</WarningLevel>
            //         <MyNewProperty>MyNewValue</MyNewProperty>
            //         <OutputPath>bin\release</OutputPath>
            //         <MyNewProperty>MyNewValue</MyNewProperty>
            Console.WriteLine(project.Xml);
        }
    }
}

Module Module1

    ''' <summary>
    ''' This code demonstrates the use of the following methods:
    '''     Engine constructor
    '''     Project constructor
    '''     Project.LoadFromXml
    '''     Project.Xml
    '''     BuildPropertyGroupCollection.GetEnumerator
    '''     BuildPropertyGroup.GetEnumerator
    '''     BuildProperty.Name (get)
    '''     BuildProperty.Value (set)
    '''     BuildPropertyGroup.RemoveProperty
    '''     BuildPropertyGroup.AddNewProperty
    ''' </summary>
    ''' <remarks></remarks>
    Sub Main()

        ' Create a new Engine object.
        Dim engine As New Engine(Environment.CurrentDirectory)

        ' Create a new Project object.
        Dim project As New Project(engine)

        ' Load the project with the following XML, which contains
        ' two PropertyGroups.
        project.LoadXml( _
            "<Project xmlns='http://schemas.microsoft.com/developer/msbuild/2003'>" & _
                "<PropertyGroup>" & _
                    "<Optimize>true</Optimize>" & _
                    "<WarningLevel>4</WarningLevel>" & _
                "</PropertyGroup>" & _
                "<PropertyGroup>" & _
                    "<OutputPath>bin\debug\</OutputPath>" & _
                    "<RemoveThisPropertyPlease>1</RemoveThisPropertyPlease>" & _
                "</PropertyGroup>" & _
            "</Project>")

        ' Iterate through each PropertyGroup in the Project.  There are two.
        For Each pg As BuildPropertyGroup In project.PropertyGroups

            Dim propertyToRemove As BuildProperty
            propertyToRemove = Nothing

            ' Iterate through each Property in the PropertyGroup.
            For Each buildProperty As BuildProperty In pg

                ' If the property's name is "RemoveThisPropertyPlease", then
                ' store a reference to this property in a local variable,
                ' so we can remove it later.
                If buildProperty.Name = "RemoveThisPropertyPlease" Then
                    propertyToRemove = buildProperty
                End If

                ' If the property's name is "OutputPath", change its value
                ' from "bin\debug\" to "bin\release\".
                If buildProperty.Name = "OutputPath" Then
                    buildProperty.Value = "bin\release\"
                End If

            Next

            ' Remove the property named "RemoveThisPropertyPlease" from the
            ' PropertyGroup
            If Not propertyToRemove Is Nothing Then
                pg.RemoveProperty(propertyToRemove)
            End If

            ' For each PropertyGroup that we found, add to the end of it
            ' a new property called "MyNewProperty".
            pg.AddNewProperty("MyNewProperty", "MyNewValue")

        Next

        '  The project now looks like this:
        ' 
        '      <?xml version="1.0" encoding="utf-16"?>
        '      <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
        '          <Optimize>true</Optimize>
        '          <WarningLevel>4</WarningLevel>
        '          <MyNewProperty>MyNewValue</MyNewProperty>
        '          <OutputPath>bin\release</OutputPath>
        '          <MyNewProperty>MyNewValue</MyNewProperty>
        Console.WriteLine(project.Xml)

    End Sub

End Module

Remarks

A BuildPropertyGroup object can represent a element in the project, or a virtual collection of properties, such as global properties or environment variable properties.

Constructors

Properties

Methods

Extension Methods

Applies to