diff --git a/WinFormsApp1/FastDataGridView.cs b/WinFormsApp1/FastDataGridView.cs
index a87c887..f5c8a2e 100644
--- a/WinFormsApp1/FastDataGridView.cs
+++ b/WinFormsApp1/FastDataGridView.cs
@@ -10,7 +10,7 @@ public class FastDataGridView : DataGridView
         typeof(DataGridView)
             .GetProperty("DoubleBuffered", BindingFlags.Instance | BindingFlags.NonPublic)
             .SetValue(this, true, null);
-
+          
         this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
         this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); 
         this.SetStyle(ControlStyles.UserPaint, true);
diff --git a/WinFormsApp1/Form1.cs b/WinFormsApp1/Form1.cs
index 2642767..e04bf8b 100644
--- a/WinFormsApp1/Form1.cs
+++ b/WinFormsApp1/Form1.cs
@@ -23,12 +23,16 @@ namespace WinFormDataGridViewDemo
             dataGridView1.Columns[1].Name = "LayoutValue";
             dataGridView1.Columns[2].Name = "SecsKey";
             dataGridView1.Columns[3].Name = "SecsValue";
+
+            
+            //dataGridView1.Columns[3].Name = "SecsValue";
             dataGridView1.Columns[0].ReadOnly = true;
             dataGridView1.Columns[1].ReadOnly = true;
             dataGridView1.Columns[2].ReadOnly = true;
             dataGridView1.Columns[3].ReadOnly = false;
             dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
             dataGridView1.AllowUserToAddRows = false;
+            dataGridView1.AllowUserToAddRows = true;
             LoadDataGrid();
             dataGridView1.Dock = DockStyle.Fill;
             tableLayoutPanel1.Dock = DockStyle.Fill;