datagridview直接给某个单元格赋值结果出现死循环

Question

“System.StackOverflowException”类型的未经处理的异常在 System.Windows.Forms.dll 中发生

         private void dgvLCA_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex != -1)
            {
                this.dgvLCA.Rows[e.RowIndex].Cells[5].Value = this.dgvLCA.Rows[e.RowIndex].Cells[2].Value;
                MessageBox.Show(this.dgvLCA.Rows[e.RowIndex].Cells[4].Value.ToString());
            }
        }

Answer 1

bool b = false;
private void dgvLCA_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex != -1 && !b)
{
b = true;
this.dgvLCA.Rows[e.RowIndex].Cells[5].Value = this.dgvLCA.Rows[e.RowIndex].Cells[2].Value;
MessageBox.Show(this.dgvLCA.Rows[e.RowIndex].Cells[4].Value.ToString());
b = false;
}
}