Add test for PR 13320

src/test/integration/UIIntegrationTests/DataGridViewTests.cs

@@ -1,8 +1,10 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.ComponentModel;
 using System.Data;
 using System.Drawing;
+using System.Windows.Forms.IntegrationTests.Common;
 using Xunit.Abstractions;
 
 namespace System.Windows.Forms.UITests;
@@ -40,6 +42,49 @@ await InputSimulator.SendAsync(
         });
     }
 
+    [WinFormsFact]
+    public void DataGridView_ClosesFormWhileDataGridViewInEditMode_WithBindingSource()
+    {
+        using Form form1 = new();
+        using Form form2 = new();
+        using DataGridView dataGridView = new();
+        using IContainer components = new Container();
+        using BindingSource bindingSource = new(components)
+        {
+            DataSource = TestDataSources.GetPersons()
+        };
+
+        dataGridView.DataSource = bindingSource;
+        dataGridView.Dock = DockStyle.Fill;
+        form2.Controls.Add(dataGridView);
+
+        form1.Shown += (_, _) =>
+        {
+            form2.Shown += (_, _) =>
+            {
+                // Ensure that DataGridView editing operations are performed after the form is fully displayed.
+                form2.BeginInvoke(() =>
+                {
+                    // Close the form when the DataGridView enters edit mode.
+                    void handler(object? s, DataGridViewEditingControlShowingEventArgs e)
+                    {
+                        dataGridView.EditingControlShowing -= handler;
+                        form2.Close();
+                    }
+
+                    dataGridView.EditingControlShowing += handler;
+                    dataGridView.CurrentCell = dataGridView.Rows[0].Cells[1];
+                    dataGridView.BeginEdit(true);
+                });
+            };
+
+            form2.ShowDialog(form1);
+            form1.Close();
+        };
+
+        form1.ShowDialog();
+    }
+
     [WinFormsTheory]
     [InlineData("short value", false)]
     [InlineData("very long value that will be truncated by the DataGridViewCell", true)]