System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Exception: UmtPortal.Controller.PostController:Search ---> System.IndexOutOfRangeException: There is no row at position 0. at System.Data.RBTree`1.GetNodeByIndex(Int32 userIndex) at UMT.Controller.Common.Utility.GetPostFromDataSet(DataSet dsPost, Boolean blnBindData) in D:\Tayyab Ali\umt-data\UMT.Portal\SourceCode\UMT.Controller\Common\Utility.cs:line 469 at UMT.Controller.SiteManagmentController.GetPostByUrlKey(String strUrlKey, Int32 intPostCategoryIdRef, Int32 intSiteIdRef) in D:\Tayyab Ali\umt-data\UMT.Portal\SourceCode\UMT.Controller\SiteManagmentController.cs:line 563 --- End of inner exception stack trace --- at UMT.Controller.SiteManagmentController.GetPostByUrlKey(String strUrlKey, Int32 intPostCategoryIdRef, Int32 intSiteIdRef) in D:\Tayyab Ali\umt-data\UMT.Portal\SourceCode\UMT.Controller\SiteManagmentController.cs:line 585 at UMT.api.umtService.GetPostByUrlKey(String strTokenKey, String strUrlKey, Int32 intPostParentId, Int32 intSiteIdRef) in D:\ado projects\UMT.PORTAL\UMT.Admin\api\umtService.asmx.cs:line 409 --- End of inner exception stack trace ---