Added a field to Grid data result to use the new page number when the skip value is greater than or equal to total available value

Author: Raj Kumar Sri Ramulu

blazorbootstrap/Models/GridDataProviderRequest.cs

@@ -62,13 +62,21 @@ public GridDataProviderResult<TItem> ApplyTo(IEnumerable<TItem> data)
 
         // apply paging
         var totalCount = resultData!.Count(); // before paging
-        if (PageNumber > 0 && PageSize > 0)
+        int? newPageNumber = null;
+        bool updatePageNumber = false;
+        if (PageNumber > 0 && PageSize > 0 && totalCount > 0)
         {
             int skip = (PageNumber - 1) * PageSize;
+            if (totalCount <= skip)
+            {
+                updatePageNumber = true;
+                newPageNumber = (totalCount / PageSize) + (totalCount % PageSize  == 0 ? 0 : 1);
+                skip = (newPageNumber.Value - 1) * PageSize;
+            }
             resultData = resultData!.Skip(skip).Take(PageSize);
         }
 
-        return new GridDataProviderResult<TItem> { Data = resultData, TotalCount = totalCount };
+        return new GridDataProviderResult<TItem> { Data = resultData, TotalCount = totalCount, UpdatePageNumber = updatePageNumber, PageNumber = newPageNumber };
     }
 
     #endregion

blazorbootstrap/Models/GridDataProviderResult.cs

@@ -20,5 +20,21 @@ public class GridDataProviderResult<TItem>
     /// </remarks>
     public int? TotalCount { get; init; }
 
+    /// <summary>
+    /// Updates the page number of the grid if set to true.
+    /// </summary>
+    /// <remarks>
+    /// Default value is false.
+    /// </remarks>
+    public bool UpdatePageNumber {get;set;}=false;
+
+    /// <summary>
+    /// Updates the page number of the grid.
+    /// </summary>
+    /// <remarks>
+    /// Default value is null.
+    /// </remarks>
+    public int? PageNumber {get;init;}
+
     #endregion
 }