DataGridView CheckBox Functionality Not Working

Question

I have a DataGridView that has CheckBox Field. I am trying to update Checkbox values in database. But it's giving me this Error. I already implement method ufGview_DataError with value e.Cancel = true. I am interested to store 0 when it will be Checked and 1 when it will be Unchecked. Sometimes it is updating values but most of the time not doing anything. I am using C# with Sql Server 2008 R2 Express Edition

Here is method that i am using to update database values

 if (e.ColumnIndex == 3)
 {
    if (ufGview.Rows[e.RowIndex].Cells["Column2"].Value != null)
     {
        bool a = Convert.ToBoolean(ufGview.Rows[e.RowIndex].Cells["Column2"].Value);
        int i;
        if (a == true)
        {
           i = 0;
         }
         else
         {
           i = 1;
         }
         UpdatePermissions(ufGview.Rows[e.RowIndex].Cells["Column1"].Value.ToString(), i);
     }
 }

Here is Method of UpdatePermissions

  private void UpdatePermissions(string p, int a)
    {
        CheckConnectionStatus();
        try
        {
            sqlConnection.Open();
            sqlCommand = new SqlCommand("Update FamilyMembers Set status=@status where Id=@Id", sqlConnection);
            sqlCommand.Parameters.AddWithValue("@status", a);
            sqlCommand.Parameters.AddWithValue("@Id", p);
            sqlDataReader = sqlCommand.ExecuteReader();

            sqlConnection.Close();
        }
        catch (Exception exp)
        {
            MessageBox.Show(exp.Message.ToString(), "Exception in UpdatePermissions");
        }
        finally
        {
            CheckConnectionStatus();
        }
    }

Please help me to fix this issue shown in Snapshot as well.