Checkin and Checkout file from TFS programmatically using c#

Question

I have a requirement to checkout and checkin file from TFS programmatically using c#. The code which I am using is as shown below.

var tfs = new TfsTeamProjectCollection(new Uri("http://MyTFSServer/"));

            var versionControlServer = tfs.GetService<VersionControlServer>();

            var workspace = versionControlServer.GetWorkspace(@"D:\Projects\");   

            var file = @"D:\Projects\Test.txt";

            workspace.PendEdit(file);

            using (StreamWriter sw = new StreamWriter(file))
            {
                sw.WriteLine("Test");
            }


            var pendingChange = workspace.GetPendingChanges();

            var changesetNumber = workspace.CheckIn(pendingChange, "checkedin the file programmatically"); 

But when I execute this code, I am getting a CheckinException - TF10141: No files checked in: resolve the conflicts and try again. in the line workspace.CheckIn(pendingChange, "checkedin the file programmatically");

How can I fix this issue?

Answer 1

As the others have said, there is a conflict here. That can occur by pending a change on a version of the file that is not the latest and trying to check in. You can see the conflicts with QueryConflicts. You can also find a sample here.