如何使用C#代码从TFS中检出和检入文件？

using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.VersionControl.Client;

public class TFSFileManager
{
    private string tfsUrl;
    private string tfsProject;
    private string tfsWorkspace;

    public TFSFileManager(string url, string project, string workspace)
    {
        tfsUrl = url;
        tfsProject = project;
        tfsWorkspace = workspace;
    }

    public void CheckOutFile(string filePath)
    {
        using (TfsTeamProjectCollection tfsCollection = new TfsTeamProjectCollection(new Uri(tfsUrl)))
        {
            VersionControlServer versionControl = tfsCollection.GetService<VersionControlServer>();
            Workspace workspace = versionControl.GetWorkspace(tfsWorkspace, tfsCollection.AuthorizedIdentity.UniqueName);
            workspace.PendEdit(filePath);
        }
    }

    public void CheckInFile(string filePath, string comment)
    {
        using (TfsTeamProjectCollection tfsCollection = new TfsTeamProjectCollection(new Uri(tfsUrl)))
        {
            VersionControlServer versionControl = tfsCollection.GetService<VersionControlServer>();
            Workspace workspace = versionControl.GetWorkspace(tfsWorkspace, tfsCollection.AuthorizedIdentity.UniqueName);
            workspace.CheckIn(new[] { filePath }, comment);
        }
    }
}

string tfsUrl = "http://tfs-server:8080/tfs/DefaultCollection";
string tfsProject = "MyProject";
string tfsWorkspace = "MyWorkspace";
string filePath = "$/MyProject/MyFile.txt";
string comment = "Checked in changes";

TFSFileManager tfsFileManager = new TFSFileManager(tfsUrl, tfsProject, tfsWorkspace);
tfsFileManager.CheckOutFile(filePath);
// Make changes to the file

tfsFileManager.CheckInFile(filePath, comment);