MSBuild從一個項目提取屬性

Question

說我有兩個項目文件「Parent.proj」和「Child.proj」。如果我宣佈一個屬性Parent.proj稱爲MyProp我可以用下面的代碼通過這Child.proj：

<MSBuild Projects="Child.proj" Targets="dostuff" Properties="MyProp=MyValue" /> 

這是好的，但我想知道是否有兒童中引用MyProp的方式.proj沒有Child.proj被Parent.proj調用。

我知道我可以在Child.proj中聲明相同的屬性，當Parent.proj調用Child.proj時，這將被覆蓋，但我想避免重複屬性值。

Answer 1

如果您在外部項目文件中定義屬性，則每個項目都可以導入屬性設置。

下面是一個非常簡單的屬性文件，我稱之爲orders.properties。

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> 
    <!-- always include the root properties --> 
    <Import Project="$(root)\root.properties.proj"/> 
    <PropertyGroup> 

    <!-- Version numbers/names for this branch --> 
    <orders_ver_major>99</orders_ver_major> 
    <orders_ver_minor>0</orders_ver_minor> 
    <orders_ver_release>0</orders_ver_release> 
    <orders_ver>$(orders_ver_major).$(orders_ver_minor).$(orders_ver_release)</orders_ver> 
    <orders_ver_db>$(orders_ver_major)_$(orders_ver_minor)_$(orders_ver_release)</orders_ver_db> 

    <!-- setup folders specific to the orders project --> 
    <orders_database>$(orders_root)\btq.orders.database</orders_database> 

    <!-- 
     Setup order database default properties, can be overriden if passed in when called from 
     the command line or from other build scripts. 
    --> 
     <orders_force_create Condition="'$(orders_force_create)' == ''">false</orders_force_create> 
    <orders_db_server   Condition="'$(orders_db_server)' == ''" >.\sqlexpress</orders_db_server> 
    <orders_db_username  Condition="'$(orders_db_username)' == ''" >yyyyyyyy</orders_db_username> 
    <orders_db_password  Condition="'$(orders_db_password)' == ''" >xxxxxx</orders_db_password> 
    <orders_db_name    Condition="'$(orders_db_name)' == ''"  >$(COMPUTERNAME)_btq_orders_v$(orders_ver_db)</orders_db_name> 
    </PropertyGroup> 
</Project> 

在我的主要生成項目中，我在orders.build.proj文件和任何需要它的子項目中導入了訂單屬性。

這是主構建文件的初始部分。

<Project DefaultTargets="build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> 
    <!-- 
    Always setup the path to the root and also the orders root folder. 
    We then include the orders properties, which includes the root properties 
    For this project the orders folder is in the same folder as this build file 
    so can just reference the ms build project directory property as the orders_root. 
    --> 
    <PropertyGroup> 
    <root>$(MSBuildProjectDirectory)\..\..</root> 
    <orders_root>$(MSBuildProjectDirectory)</orders_root> 
    </PropertyGroup> 

    <!-- 
     Once we have the roots configured we can now include all the standard properties, 
     this also includes the root.properties also. 
    --> 
    <Import Project="$(orders_root)\orders.properties.proj"/> 

希望這回答你的問題。

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