使用TFS API C＃从TFS中的文件读取内容

Question

Maybe is duplicate but I didn't find proper answer.

Is it possible to read content from file which is on TFS before MSBuild is started?

I am using following:

 TfsTeamProjectCollection server = new TfsTeamProjectCollection(new Uri("https://hasinc.visualstudio.com/DefaultCollection"));
 VersionControlServer version = server.GetService(typeof(VersionControlServer)) as VersionControlServer;   
 Item item = version.GetItem(@"$\SomeProject\SomeFile.cs");

I provided server path and I retrieved correct "item". I can read some properties eg content length. But how I can read file?

I need to read content and extract some specific info!

That process happening during TFS build in custom activity method:

protected override void Execute(CodeActivityContext context)
{
}

Is it possible to achieve that?

Answer 1

Some ideas on downloading the file:

DownloadFile Method

You could use the DownloadFile method to download the file to a temporary file:

TfsTeamProjectCollection server = new TfsTeamProjectCollection(new Uri("https://hasinc.visualstudio.com/DefaultCollection"));
VersionControlServer version = server.GetService(typeof(VersionControlServer)) as VersionControlServer;   
Item item = version.GetItem(@"$\SomeProject\SomeFile.cs");
string tempFileName = System.IO.Path.GetTempFileName();
item.DownloadFile(tempFileName);

DownloadFiles Activity

Rather than getting the file in a custom activity, Team Build 2012 & 2013 both support a DownloadFiles activity , which allows a customized build to download file(s) not in the workspace.

Add an Extra Path to the Build Source Settings

You could edit the Source Settings of your build definition, to map an additional source control folder to a build agent folder.