win7 datagridview scroll problem.

My app works fine in xp. 

Recently, we moved to win7. 

The datagridview refresh very slow when we scroll the scrollbar. 

To solve this issue, do this:

  public static class ExtensionMethods {     public static void DoubleBuffered(this DataGridView dgv, bool setting)     {         Type dgvType = dgv.GetType();         PropertyInfo pi = dgvType.GetProperty("DoubleBuffered",             BindingFlags.Instance | BindingFlags.NonPublic);         pi.SetValue(dgv, setting, null);     } }

  
  dataGridView1.DoubleBuffered(true);
  

reference: http://bitmatic.com/c/fixing-a-slow-scrolling-datagridview

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Feng