brian0031的专栏

得到comboBox的值变为字符串(string) int m = 1; string cbx = comboBox1.GetItemText(comboBox1.Items[m - 1]).Trim(); 或 string cbx = comboBox1.GetItemText(comboBox1.SelectedItem).Trim();

private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e) {     if (dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value == null) //不能省略，如果省略，单元格编辑时按下esc会报错“未将对象引用设置到对象