Passing Itemgroup between msbuild project - visual-studio-2010

Question

How can i pass an itemgroup between msbuild project using MSbuild task. I have an Msbuild task as given below
<Target Name ="test">
<MSBuild Projects="New.proj" Targets="mytarget"
Properties="Itemproperty=#(Item->'%(FullPath)')">
</MSBuild>
</Target>
Where 'Item' is the itemgroup.But iam getting an error as below.
error MSB4012: The expression "Itemproperty=#(Item->'%(FullPath)')" cannot be used in this context. Item lists cannot beconcatenated with other strings where an item list is expected. Use a semicolonto separate multiple item lists.
Thanks

Answer 1

Can you "flatten" it into a big long (single) string?
example:
<PropertyGroup>
<MySuperLongString>#(MyIncludeFiles->'"%(fullpath)"')</MySuperLongString>
</PropertyGroup>
Here are some more "options"
<Message Text="The below items are good when you need to feed command line tools, like the console NUnit exe. Quotes around the filenames help with paths that have spaces in them. "/>
<Message Text="I found this method initially from : http://pscross.com/Blog/post/2009/02/22/MSBuild-reminders.aspx Thanks Pscross! "/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="Flat list, each file surrounded by quotes, with semi colon delimiter: "/>
<Message Text=" #(MyIncludeFiles->'"%(fullpath)"')"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="Flat list, each file surrounded by quotes, no comma (space delimiter): "/>
<Message Text=" #(MyIncludeFiles->'"%(fullpath)"' , ' ')"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="Flat list, each file surrounded by quotes, with comma delimiter: "/>
<Message Text=" #(MyIncludeFiles->'"%(fullpath)"' , ',')"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="List of files using special characters (carriage return)"/>
<Message Text="#(MyIncludeFiles->'"%(fullpath)"' , '%0D%0A')"/>
<Message Text=" "/>
<Message Text=" "/>
Full example below:
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="AllTargetsWrapper" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Target Name="AllTargetsWrapper">
<CallTarget Targets="FunWithFilesTask" />
</Target>
<PropertyGroup>
<WorkingCheckout>.</WorkingCheckout>
</PropertyGroup>
<!-- ===================================================== -->
<!--
See:
http://msdn.microsoft.com/en-us/library/ms164313.aspx
*Identity Value for the item specified in the Include attribute.
*Filename Filename for this item, not including the extension.
*Extension File extension for this item.
*FullPath Full path of this item including the filename.
*RelativeDir Path to this item relative to the current working directory.
*RootDir Root directory to which this item belongs.
RecursiveDir Used for items that were created using wildcards. This would be the directory that replaces the wildcard(s) statements that determine the directory.
*Directory The directory of this item.
AccessedTime Last time this item was accessed.
CreatedTime Time the item was created.
ModifiedTime Time this item was modified.
-->
<Target Name="FunWithFilesTask">
<ItemGroup>
<MyExcludeFiles Include="$(WorkingCheckout)\**\*.doesnotexist" />
</ItemGroup>
<ItemGroup>
<MyIncludeFiles Include="$(WorkingCheckout)\**\*.*" Exclude="#(MyExcludeFiles)" />
</ItemGroup>
<PropertyGroup>
<MySuperLongString>#(MyIncludeFiles->'"%(fullpath)"')</MySuperLongString>
</PropertyGroup>
<Message Text="MySuperLongString=$(MySuperLongString)"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="The below items are good when you need to feed command line tools, like the console NUnit exe. Quotes around the filenames help with paths that have spaces in them. "/>
<Message Text="I found this method initially from : http://pscross.com/Blog/post/2009/02/22/MSBuild-reminders.aspx Thanks Pscross! "/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="Flat list, each file surrounded by quotes, with semi colon delimiter: "/>
<Message Text=" #(MyIncludeFiles->'"%(fullpath)"')"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="Flat list, each file surrounded by quotes, no comma (space delimiter): "/>
<Message Text=" #(MyIncludeFiles->'"%(fullpath)"' , ' ')"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="Flat list, each file surrounded by quotes, with comma delimiter: "/>
<Message Text=" #(MyIncludeFiles->'"%(fullpath)"' , ',')"/>
<Message Text=" "/>
<Message Text=" "/>
<Message Text="List of files using special characters (carriage return)"/>
<Message Text="#(MyIncludeFiles->'"%(fullpath)"' , '%0D%0A')"/>
<Message Text=" "/>
<Message Text=" "/>
</Target>
</Project>