//根据班级查询
private void cboClass_SelectedIndexChanged(object sender, EventArgs e)
{
if (this.cboClass.SelectedIndex == -1)
{
MessageBox.Show("请首先选择要查询的班级！", "查询提示");
return;
}
this.gbStat.Text = "[" + this.cboClass.Text.Trim() + "]考试成绩统计";
//展示考试成绩列表
this.dgvScoreList.AutoGenerateColumns = false;
this.dgvScoreList.DataSource = objSocreService.GetScoreList(this.cboClass.Text.ToString());
//查询成绩统计结果
Dictionary <string, string> dic = objSocreService.GetScoreInfo(this.cboClass.SelectedValue.ToString());
this.lblAttendCount.Text = dic["stuCount"];
this.lblCSharpAvg.Text = dic["avgCsharp"];
this.lblCount.Text = dic["absentCount"];
//显示缺考学员
List <string> list = objSocreService.getAbsentList(this.cboClass.SelectedValue.ToString());
this.lblList.Items.Clear();
this.lblList.Items.AddRange(list.ToArray());
}