Otherwise Element (MSBuild)

 

For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.

For the latest documentation on Visual Studio 2017, see Otherwise Element (MSBuild) on docs.microsoft.com. Specifies the block of code to execute if and only if the conditions of all When elements evaluate to false.

<Project>
<Choose>
<When>
<Choose>
...
<Otherwise>
<Choose>
...

<Otherwise>  
    <PropertyGroup>... </PropertyGroup>  
    <ItemGroup>... </ItemGroup>  
    <Choose>... </Choose>  
</Otherwise>  

The following sections describe attributes, child elements, and parent elements.

Attributes

None.

Child Elements

ElementDescription
ChooseOptional element.

Evaluates child elements to select one section of code to execute. There may be zero or more Choose elements in an Otherwise element.
ItemGroupOptional element.

Contains a set of user-defined Item elements. There may be zero or more ItemGroup elements in an Otherwise element.
PropertyGroupOptional element.

Contains a set of user-defined Property elements. There may be zero or more PropertyGroup elements in an Otherwise element.

Parent Elements

ElementDescription
ChooseEvaluates child elements to select one section of code to execute.

There may be only one Otherwise element in a Choose element, and it must be last element.

The Choose, When, and Otherwise elements are used together to provide a way to select one section of code to execute out of a number of possible alternatives. For more information, see Conditional Constructs.

The following project uses the Choose element to select which set of property values in the When elements to set. If the Condition attributes of both When elements evaluate to false, the property values in the Otherwise element are set.

<Project  
    xmlns="http://schemas.microsoft.com/developer/msbuild/2003" >  
    <PropertyGroup>  
        <Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>  
        <OutputType>Exe</OutputType>  
        <RootNamespace>ConsoleApplication1</RootNamespace>  
        <AssemblyName>ConsoleApplication1</AssemblyName>  
        <WarningLevel>4</WarningLevel>  
    </PropertyGroup>  
    <Choose>  
        <When Condition=" '$(Configuration)'=='debug' ">  
            <PropertyGroup>  
                <DebugSymbols>true</DebugSymbols>  
                <DebugType>full</DebugType>  
                <Optimize>false</Optimize>  
                <OutputPath>.\bin\Debug\</OutputPath>  
                <DefineConstants>DEBUG;TRACE</DefineConstants>  
            </PropertyGroup>  
            <ItemGroup>  
                <Compile Include="UnitTesting\*.cs" />  
                <Reference Include="NUnit.dll" />  
            </ItemGroup>  
        </When>  
        <When Condition=" '$(Configuration)'=='retail' ">  
            <PropertyGroup>  
                <DebugSymbols>false</DebugSymbols>  
                <Optimize>true</Optimize>  
                <OutputPath>.\bin\Release\</OutputPath>  
                <DefineConstants>TRACE</DefineConstants>  
            </PropertyGroup>  
        </When>  
        <Otherwise>  
            <PropertyGroup>  
                <DebugSymbols>true</DebugSymbols>  
                <Optimize>false</Optimize>  
                <OutputPath>.\bin\$(Configuration)\</OutputPath>  
                <DefineConstants>DEBUG;TRACE</DefineConstants>  
            </PropertyGroup>  
        </Otherwise>  
        </Choose>  
    <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />  
</Project>  

Conditional Constructs
Project File Schema Reference

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