问题
I have inline Task code written in csharp
I wonder if there is anyway to access propect property in inline Task code
For ex. I am trying to replace string match with project property value. is it possible?
<![CDATA[
MatchCollection matches = Regex.Matches(SourceStr, Pattern);
for (int i = 0; i < matches.Count; i++)
// replace the match value with project property... possible?
]]>
回答1:
Pass it as a parameter, like you would with a compiled task?
<ParameterGroup>
<Foo ParameterType="System.Bar" Required="true" />
<ParameterGroup>
Edit: Looks like simple inline tokens work too.
<![CDATA[
Console.WriteLine("$(Foo)");
]]>
回答2:
Too big to reply as comment.
Reason it's empty is as in your other question -- evaluation order. The code is evaluated and tokenized prior to hitting the target, I assume that's where you set the value, and setting the property.
If I understood what you're trying to achieve with the task, have a look below at an example, just pass them in as properties and out as output.
That said, I think you should look into Property Functions first, save youself a bunch of trouble.
http://msdn.microsoft.com/en-us/library/dd633440.aspx
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<UsingTask TaskName="Foo" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
<ParameterGroup>
<SourceStr Required="true" Output="true" />
<Pattern Required="true" />
<Value Required="true" />
<Macros ParameterType="Microsoft.Build.Framework.ITaskItem[]" Output="true" />
</ParameterGroup>
<Task>
<Using Namespace="System.Linq" />
<Using Namespace="System.Text.RegularExpressions" />
<Code Type="Fragment" Language="cs">
<![CDATA[
var regex = new Regex(Pattern);
var matches = regex.Matches(SourceStr).Cast<Match>().Select(m => m.Value).ToList();
matches.ForEach(m => Log.LogMessage("{0} -> {1}", m, Value));
Macros = matches.Select(m => new TaskItem(m)).ToArray();
SourceStr = regex.Replace(SourceStr, Value);
]]>
</Code>
</Task>
</UsingTask>
<Target Name="Foo">
<PropertyGroup>
<SourceStr>Bar</SourceStr>
<Value>z</Value>
</PropertyGroup>
<Message Text="in $(SourceStr)" />
<Foo SourceStr="$(SourceStr)" Pattern="r$" Value="$(Value)">
<Output TaskParameter="SourceStr" PropertyName="SourceStr" />
<Output TaskParameter="Macros" ItemName="Macros" />
</Foo>
<Message Text="out $(SourceStr)" />
<Message Text="sans %(Macros.Identity)" />
</Target>
</Project>
回答3:
There are examples in the MSDN documentation. For example:
<Project xmlns='http://schemas.microsoft.com/developer/msbuild/2003' ToolsVersion="4.0">
<UsingTask TaskName="TokenReplace" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
<ParameterGroup>
<Path ParameterType="System.String" Required="true" />
<Token ParameterType="System.String" Required="true" />
<Replacement ParameterType="System.String" Required="true" />
</ParameterGroup>
<Task>
<Code Type="Fragment" Language="cs">
<![CDATA[
string content = File.ReadAllText(Path);
content = content.Replace(Token, Replacement);
File.WriteAllText(Path, content);
]]>
</Code>
</Task>
</UsingTask>
<Target Name='Demo' >
<TokenReplace Path="C:\Project\Target.config" Token="$MyToken$" Replacement="MyValue"/>
</Target>
</Project>
If $(MyValue)
was a project property you could do something like:
<TokenReplace Path="C:\Project\Target.config" Token="$MyToken$" Replacement="$(MyValue)"/>
来源:https://stackoverflow.com/questions/14636796/msbuild-how-to-access-project-property-value-in-inline-task-code