ComBox控件的使用

conn.Open();
OleDbDataAdapter myDA2 = new OleDbDataAdapter( " select * from Grade " , conn);
myDA2.Fill(ds, " table " );
//绑定combox数据源
comboBox1.DataSource = ds.Tables[ " table " ];
comboBox1.ValueMember = " Grade_ID " ;
comboBox1.DisplayMember = " Grade_Name " ;

conn.Close();

int k = int .Parse( this .comboBox1.SelectedValue.ToString());//获取combox的选中值