Fix the master detail export.

Author: akorchev

grid/detail-grid-excel-export/KendoUIMVC5/Views/Home/Index.cshtml

@@ -54,7 +54,7 @@
         var deferred = $.Deferred();
 
         // get the index of the master row
-        var masterRowIndex = e.masterRow.index();
+        var masterRowIndex = e.masterRow.index(".k-master-row");
 
         // add the deferred to the list of promises
         detailExportPromises.push(deferred);
@@ -106,7 +106,7 @@
             // merge the detail export sheet rows with the master sheet rows
             // loop backwards so the masterRowIndex doesn't need to be updated
             for (var i = detailExports.length - 1; i >= 0; i--) {
-                var masterRowIndex = Math.max(detailExports[i].masterRowIndex, 1);
+                var masterRowIndex = detailExports[i].masterRowIndex + 1;
 
                 var sheet = detailExports[i].sheet;