使用复选框在c#中通过datagridView插入多个数据

Question

我这里有这段代码，一旦选中复选框，我希望通过 datagridview 将多个学生标记插入数据库。下面代码的问题是只插入了第一个选中行的数据。我该怎么做才能确保插入每个选定的行。

    public override void Savebtn_Click(object sender, EventArgs e)
    {
        int select;
        for (int i = 0; i <= dataGridView1.Rows.Count -1; i++)
        {
            DataGridViewRow row = dataGridView1.Rows[i];
            if((bool)row.Cells["CheckBoxColumn"].FormattedValue == true)
            {
                select++;
            }

        }
        if(select == 0)
        {
            MainClass.showMSG("Please Select at least one Student", "Error", "Error");
        }
        for (int i = 0; i < dataGridView1.Rows.Count -1; i++)
        {
            DataGridViewRow row = dataGridView1.Rows[i];

            if ((bool)row.Cells["CheckBoxColumn"].FormattedValue == true)
            {
              obj.st_InsertResults(Convert.ToInt32(row.Cells["stdIDGV"].Value.ToString()), 
               row.Cells["StdNameGV"].Value.ToString(),
               Convert.ToInt32(row.Cells["EngGV"].Value.ToString()));
                MainClass.showMSG(" Data added successfully.", "Success....", "Success");
                MainClass.disable_reset(panel1);
                dataGridView1.DataSource = null;

            }
        }

    }

Answer 1

为什么要将数据源设置为 null？

dataGridView1.DataSource = null;

尝试删除此行，应该可以！