diff --git a/Maui.DataGrid/DataGrid.xaml.cs b/Maui.DataGrid/DataGrid.xaml.cs
index 43a1b3e..3c561d7 100644
--- a/Maui.DataGrid/DataGrid.xaml.cs
+++ b/Maui.DataGrid/DataGrid.xaml.cs
@@ -33,6 +33,7 @@ public partial class DataGrid
     private readonly Style _defaultSortIconStyle;
 
     private bool _isReloading;
+    private readonly object _reloadLock = new();
     private IList<object>? _internalItems;
     private DataGridColumn? _sortedColumn;
 
@@ -1034,26 +1035,29 @@ private void OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
 
     internal void Reload()
     {
-        if (_isReloading)
+        lock (_reloadLock)
         {
-            return;
-        }
+            if (_isReloading)
+            {
+                return;
+            }
 
-        _isReloading = true;
+            _isReloading = true;
 
-        try
-        {
-            InitHeaderView();
+            try
+            {
+                InitHeaderView();
 
-            if (_internalItems is not null)
+                if (_internalItems is not null)
+                {
+                    InternalItems = new List<object>(_internalItems);
+                }
+            }
+            finally
             {
-                InternalItems = new List<object>(_internalItems);
+                _isReloading = false;
             }
         }
-        finally
-        {
-            _isReloading = false;
-        }
     }
 
     #endregion UI Methods