//显示选择科目的填空题
 protected void ddlCourse_SelectedIndexChanged(object sender, EventArgs e)
 {
     FillBlankProblem fillblankproblem = new FillBlankProblem();  //创建填空题对象
     DataSet ds = fillblankproblem.QueryFillBlankProblem(Int32.Parse(ddlCourse.SelectedValue));//根据考试科目查询填空题信息
     GridView1.DataSource = ds.Tables[0].DefaultView;    //为GridView控件指名数据源
     GridView1.DataBind();                               //绑定数据
 }
 protected void GridViewBind()
 {
     FillBlankProblem fillblankproblem = new FillBlankProblem();  //创建填空题对象
     DataSet ds = fillblankproblem.QueryFillBlankProblem(Int32.Parse(ddlCourse.SelectedValue));//根据考试科目查询填空题信息
     GridView1.DataSource = ds.Tables[0].DefaultView;    //为GridView控件指名数据源
     GridView1.DataBind();                               //绑定数据
     //胡媛媛修改,为gridview1中的复选框添加事件,2010-5-5
     if (GridView1.Rows.Count > 0)
     {
         foreach (GridViewRow dr in GridView1.Rows)
         {
             ((CheckBox)dr.FindControl("xuanze")).Attributes.Add("onclick", "SigchkChg()");
         }
     }
     //胡媛媛修改,为gridview1中的复选框添加事件,2010-5-5
 }