Removed unnecessary data iteration. (#916)

GridDataProvider iterated twice over data source when paging is active - this has been optimized.

Co-authored-by: Neovex <[email protected]>

Author: Neovex

blazorbootstrap/Models/GridDataProviderRequest.cs

@@ -43,15 +43,15 @@ public GridDataProviderResult<TItem> ApplyTo(IEnumerable<TItem> data)
                 if (index == 1)
                 {
                     orderedData = sortItem.SortDirection == SortDirection.Ascending
-                                      ? resultData.OrderBy(sortItem.SortKeySelector.Compile())
-                                      : resultData.OrderByDescending(sortItem.SortKeySelector.Compile());
+                                    ? resultData.OrderBy(sortItem.SortKeySelector.Compile())
+                                    : resultData.OrderByDescending(sortItem.SortKeySelector.Compile());
                 }
                 else
                 {
                     if (orderedData != null)
                         orderedData = sortItem.SortDirection == SortDirection.Ascending
-                                          ? orderedData.ThenBy(sortItem.SortKeySelector.Compile())
-                                          : orderedData.ThenByDescending(sortItem.SortKeySelector.Compile());
+                                        ? orderedData.ThenBy(sortItem.SortKeySelector.Compile())
+                                        : orderedData.ThenByDescending(sortItem.SortKeySelector.Compile());
                 }
 
                 index++;
@@ -61,15 +61,11 @@ public GridDataProviderResult<TItem> ApplyTo(IEnumerable<TItem> data)
         }
 
         // apply paging
-        var skip = 0;
-        var take = data.Count();
         var totalCount = resultData!.Count(); // before paging
-
         if (PageNumber > 0 && PageSize > 0)
         {
-            skip = (PageNumber - 1) * PageSize;
-            take = PageSize;
-            resultData = resultData!.Skip(skip).Take(take);
+            int skip = (PageNumber - 1) * PageSize;
+            resultData = resultData!.Skip(skip).Take(PageSize);
         }
 
         return new GridDataProviderResult<TItem> { Data = resultData, TotalCount = totalCount };