dataGridView_CellContentClick：調用或BeginInvoke不能在控制被稱爲

Question

任何一個可以告訴我我做了什麼錯誤的代碼，它產生味精

「調用或BeginInvoke無法控制被調用，直到窗口句柄已創建「

private void dataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e) 
     { 

       if (e.ColumnIndex == buyColumn.Index) 
       { 

        double openprice = (double)dataGridView.Rows[e.RowIndex].Cells[offerColumn.Index].Value; 
        string symbol = dataGridView.Rows[e.RowIndex].Cells[symbolColumn.Index].Value.ToString(); 
        double quanity= (double)dataGridView.Rows[e.RowIndex].Cells[quanityColumn.Index].Value; 

        MessageBox.Show("I buy " + symbol + " with " + quanity + " at " + openprice); 
      }   

更新：調試後，這3條線路引起的問題，PLZ告訴我如何解決

double openprice = (double)dataGridView.Rows[e.RowIndex].Cells[offerColumn.Index].Value; 
         string symbol = dataGridView.Rows[e.RowIndex].Cells[symbolColumn.Index].Value.ToString(); 
         double quanity= (double)dataGridView.Rows[e.RowIndex].Cells[quanityColumn.Index].Value; 

Answer 1

嘗試

 if (dataGridView.IsHandleCreated && e.ColumnIndex == buyColumn.Index) 
     { 

      double openprice = (double)dataGridView.Rows[e.RowIndex].Cells[offerColumn.Index].Value; 
      string symbol = dataGridView.Rows[e.RowIndex].Cells[symbolColumn.Index].Value.ToString(); 
      double quanity= (double)dataGridView.Rows[e.RowIndex].Cells[quanityColumn.Index].Value; 

      MessageBox.Show("I buy " + symbol + " with " + quanity + " at " + openprice); 
     }