From b1b6499d7c4781ecb0027df01968a1e75f402679 Mon Sep 17 00:00:00 2001
From: Vladimir Enchev <vladimir.enchev@gmail.com>
Date: Tue, 10 Sep 2024 18:07:51 +0300
Subject: [PATCH] DataGrid column AllowCheckBoxListVirtualization property
 added

---
 Radzen.Blazor/RadzenDataGridColumn.razor.cs  | 6 ++++++
 Radzen.Blazor/RadzenDataGridHeaderCell.razor | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Radzen.Blazor/RadzenDataGridColumn.razor.cs b/Radzen.Blazor/RadzenDataGridColumn.razor.cs
index 690b10cdf26..87b780e2fec 100644
--- a/Radzen.Blazor/RadzenDataGridColumn.razor.cs
+++ b/Radzen.Blazor/RadzenDataGridColumn.razor.cs
@@ -38,6 +38,12 @@ public partial class RadzenDataGridColumn<TItem> : ComponentBase, IDisposable
         [CascadingParameter]
         public RadzenDataGridColumn<TItem> Parent { get; set; }
 
+        /// <summary>
+        /// Specifies wether CheckBoxList filter list virtualization is enabled. Set to <c>true</c> by default.
+        /// </summary>
+        [Parameter]
+        public bool AllowCheckBoxListVirtualization { get; set; } = true;
+
         /// <summary>
         /// Gets or sets the column filter mode.
         /// </summary>
diff --git a/Radzen.Blazor/RadzenDataGridHeaderCell.razor b/Radzen.Blazor/RadzenDataGridHeaderCell.razor
index b76f37db30c..f7a11b19ce7 100644
--- a/Radzen.Blazor/RadzenDataGridHeaderCell.razor
+++ b/Radzen.Blazor/RadzenDataGridHeaderCell.razor
@@ -148,7 +148,7 @@
                                 }
                                 else
                                 {
-                                    <RadzenListBox AllowVirtualization="true" AllowClear="true" Multiple="true" Style="height: 300px" 
+                                    <RadzenListBox AllowVirtualization="@Column.AllowCheckBoxListVirtualization" AllowClear="true" Multiple="true" Style="height: 300px"
                                                    TValue="IEnumerable<object>" Value=@Column.GetFilterValue() Change="@ListBoxChange" 
                                                    Data=@filterValues Count=@filterValuesCount LoadData="@LoadFilterValues" 
                                                    AllowFiltering="@(!string.IsNullOrEmpty(Column.GetFilterProperty()) && PropertyAccess.GetPropertyType(typeof(TItem), Column.GetFilterProperty()) == typeof(string))"