如何将组合框放在从Sql查询填充的DataGridView中？

Question

因此，我正在使用以下方法在datagridview中显示数据：

con.Open();
adap = new SqlDataAdapter("SELECT ID, Course_Description as 
'Course',Student_Name as 'Name', Classroom as 'Room', Seat_Number as 
'Seat No.' from TBL_SeatPlan WHERE Course_Description = '"+ 
cmbCourse.Text +"' ", con);
ds = new System.Data.DataSet();
adap.Fill(ds,"SeatPlan");
dtSeat.DataSource = ds.Tables[0];

DataGridViewComboBoxColumn Dcolumn = new DataGridViewComboBoxColumn();
Dcolumn.HeaderText = "Status";
Dcolumn.Items.Add("Absent");
Dcolumn.Items.Add("Present");

con.Close();

我想做的是添加另一列带有组合框的框，以验证学生是否缺席。

DataGridViewComboBoxColumn Dcolumn = new DataGridViewComboBoxColumn();
Dcolumn.HeaderText = "Status";
Dcolumn.Items.Add("Absent");
Dcolumn.Items.Add("Present");

这行代码似乎没有出现在我的datagridview中

Answer 1

是的，我现在可以设法添加另一列，但是我想要的是在我添加的那列中放一个组合框。

con.Open();
adap = new SqlDataAdapter("SELECT ID, Course_Description as 'Course', Year_Level as 
'Year Level', Student_Name as 'Name', Classroom as 'Room', Seat_Number as 'Seat No.' 
from TBL_SeatPlan WHERE Course_Description = '" + cmbCourse.Text + "' and Year_Level 
= '" + cmbYrLvl.Text + "' ", con);
DataTable dt = new DataTable();
adap.Fill(dt);
dtSeat.DataSource = dt;

DataGridViewComboBoxColumn Dcolumn = new DataGridViewComboBoxColumn();

dt.Columns.Add(new DataColumn("Status", typeof(char)));

Dcolumn.HeaderText = "Status";
Dcolumn.Items.Add("Absent");
Dcolumn.Items.Add("Present");

con.Close();