Question

怎样将数据库查询出来的数据调用到c#的combox上显示出来

Answer 1

DataTable dt = //查出来的数据
comboxName.DataSource = dt;
comboxName.DisplayMember = "字段名";//combox项的文本（可见项），比如：深圳市
comboxName.ValueMember = "字段名";//combox项的值(不可见)，比如：深圳市的ID

Answer 2

DataTable table = new DataTable()
SqlConnection sqlconn = new SqlConnection(connectionStr);
sqlconn.Open();
SqlCommand sqlcomm = new SqlCommand("SELECT xx FROM xx WHERE xx = 'xx'",sqlconn);
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sqlcomm);
sqlAdapter.Fill(table);
this.combox.DataSource = (from x in table.Rows.Cast<DataRow>().ToList() select x[0]).ToList();