Use IVsDifferenceService
to invoke Visual Studio diff tool from your VSPackage:
private void Compare(string leftFile, string rightFile)
{
var diffService = (IVsDifferenceService)GetService(typeof(SVsDifferenceService));
if (diffService != null)
{
ErrorHandler.ThrowOnFailure(
diffService.OpenComparisonWindow(leftFile, rightFile).Show()
);
}
}
To test it you need to set the workspace and download the file you want to compare:
// TODO: add some error handling
var tpc = new TfsTeamProjectCollection(new Uri("http://tfs.company.com:8080/tfs"));
var vcs = tpc.GetService<VersionControlServer>();
var workspace = vcs.GetWorkspace(Environment.MachineName, vcs.AuthorizedUser);
string localItem = @"C:\workspace\project\somefile.cs";
var folder = workspace.GetWorkingFolderForLocalItem(localItem);
var item = vcs.GetItem(folder.ServerItem, VersionSpec.Latest);
var latestItem = string.Format("{0}~{1}", localItem, item.ChangesetId);
item.DownloadFile(latestItem);
Compare(localItem, latestItem);
References:
using Microsoft.VisualStudio;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.VersionControl.Client;