how to use the absolute path in the msbuild config file(*.proj)？ - msbuild

Question

the relative content in msbuild.proj file:
<Message Text="*****check the site exists*****" Importance="high"/>
<Exec Command="C:\WINDOWS\System32\inetsrv\appcmd.exe list site /name:$(WebAppSiteName) " ContinueOnError="true">
<Output TaskParameter="ExitCode" PropertyName="ErrorCode2" />
</Exec>
<Message Text="*****if not exists create site*****" Importance="high" Condition="'$(ErrorCode2)' > '0'" />
<Exec Command="C:\WINDOWS\System32\inetsrv\appcmd.exe add site /name:$(WebAppSiteName) /bindings:http/*:80:$(SiteDomain) /applicationDefaults.applicationPool:$(WebAppSiteName) /physicalPath:$(BuildSolutionDir)$(DeployDir)Website" Condition="$(WebAppSiteName)!='' and '$(ErrorCode2)' > '0'"></Exec>
in above: the actual parameter(/physicalPath） value of runtime is :
D:\YDJWebsite.Dev\deply\fw\..\..\mkltest2Website
actually, the path of above is equivalent to D:\YDJWebsite.Dev\mkltest2Website
when accessing the site, the error shows:
500 - internal server error,
resource not found
if i change the path to right format "D:\YDJWebsite.Dev\mkltest2Website", the error disappeared
the physical path of website in iis shows here.
now, i know the only solution is to convert the paramter value(/physicalPath） to right format?
but how to do it in proj file? is there any suggestion ? tks.

Answer 1

i have solved the problem with the msbuild's inline task.
<UsingTask TaskName="AbsolutePath" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.Core.dll">
<ParameterGroup>
<Path ParameterType="System.String" Required="true" />
<FullPath ParameterType="System.String" Output="true" />
</ParameterGroup>
<Task>
<Reference Include="System.Core" />
<Using Namespace="System" />
<Using Namespace="System.IO" />
<Using Namespace="System.Text.RegularExpressions" />
<Using Namespace="Microsoft.Build.Framework" />
<Using Namespace="Microsoft.Build.Utilities" />
<Code Type="Fragment" Language="cs">
<![CDATA[
try {
if(string.IsNullOrWhiteSpace(Path))
{
FullPath = "";
}
else
{
DirectoryInfo dirInfo = new DirectoryInfo(Path);
FullPath = dirInfo.FullName;
}
}
catch (Exception ex) {
FullPath = "";
}
]]>
</Code>
</Task>
<AbsolutePath Path="$(BuildSolutionDir)$(DeployDir)Website">
<Output TaskParameter="FullPath" PropertyName="FullPath" />
</AbsolutePath>
<Message Text="$(FullPath)"/>
tks.