Tfs WIQL to object converter - parsing

Question

this is my first question :)
I was wondering, if there is something like a WIQL (TFS Work Item Query Language) parser.
I'm dealing with TFS Queries and i have to programatically change some fields of them. Searching for a parses or something had no results to me. Can you help me?
NOTE: I have to change the queries themselves. Not any workitems.
Thank you Guys.

Answer 1

You can use REST api or the .net api:
REST API:
POST https://{instance}/defaultcollection/[{project}/]_apis/wit/wiql?api-version={version}
Content-type: Application/json
{
"query": string
}
.net API:
// credentials if required
System.Net.ICredentials credentials = new System.Net.NetworkCredential("User", "Password", "Domain");
// create the collection
Microsoft.TeamFoundation.Client.TfsTeamProjectCollection teamProjectCollection =
new Microsoft.TeamFoundation.Client.TfsTeamProjectCollection(new Uri(#"http://tfsServer:8080/tfs/collection"), credentials);
// check we are authenticated
teamProjectCollection.EnsureAuthenticated();
// create the work item store
Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemStore Store =
(Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemStore)
teamProjectCollection.GetService(typeof(Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemStore));
// create a query to select tasks
string query = "SELECT * FROM WorkItems WHERE [System.WorkItemType] = 'Task' AND [System.IterationPath] = '#IterationPath' ORDER BY [System.WorkItemType], [System.Id]";
// replace the iteration
query = query.Replace("#IterationPath", "IterationPath");
// query the store!
Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemCollection WIC = Store.Query(query);