string tpcURL = "http://192.168.83.62:8080/";

TfsTeamProjectCollection tpc = new TfsTeamProjectCollection(new Uri(tpcURL));

VersionControlServer version = tpc.GetService(typeof(VersionControlServer)) as VersionControlServer;

version.NonFatalError += version_NonFatalError;

Workspace[] wss = version.QueryWorkspaces(null, Environment.UserName, Environment.MachineName);

Workspace ws = wss[];

string serverDir = "$/MySolution/Customer/MAINLINE/ScrmApp/SinaWeiTravel/SCRM.HPHY.Models";

ItemSet its = version.GetItems(serverDir, RecursionType.OneLevel);

foreach (var item in its.Items)

{

    ws.SetLock(item.ServerItem, LockLevel.CheckOut);

}

ws.SetLock(item.ServerItem, LockLevel. None);

//LockLevel 锁定级别:

//LockLevel.None      解锁

//LockLevel.Checkin   签入锁定

//LockLevel.CheckOut  签出锁定

//LockLevel.Unchanged