C# 想通过datagridview 更新Access,在CellEndEdit事件中编程，有时不能成功？
修改完单元格以后，如果光标直接移到其它行则自动更新，如果移到本行则不能更新，需要再次修改单元格的值后才能成功，不知什么原因？
代码如下：
  private void GridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
        {
            
            DataTable table1 = (DataTable)GridView1.DataSource;
                AdapterUpdate(selectstring, table1);
        }
  private OleDbDataAdapter AdapterUpdate(string SelectString, DataTable tableName)
          {
                  OleDbDataAdapter Adapter = new OleDbDataAdapter();
              try
              {
                  oleDbConnection1.Close();
                  oleDbConnection1.Open();
                  OleDbCommand command = new OleDbCommand(SelectString, oleDbConnection1);
                  Adapter.SelectCommand = command;
                  OleDbCommandBuilder builder = new OleDbCommandBuilder(Adapter);
                  Adapter.UpdateCommand = builder.GetUpdateCommand();
                  Adapter.InsertCommand = builder.GetInsertCommand();
                  Adapter.DeleteCommand = builder.GetDeleteCommand();
                  Adapter.Update(tableName);
                  tableName.AcceptChanges();
                  DataSet ds = CreateDataSet(selectstring, tablename);
                  GridView1.DataSource = ds.Tables[tablename];
                 
              }
              catch(Exception ex)
              {
                  MessageBox.Show(ex.Message, "出现错误");
              }
                 return Adapter;        
          }

另外，通过DataTable绑定的方式也遇到同样的问题。不知何故？求指点。