viewachievement.ascx.cs

学生成绩管理系统

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using TeachHelper.BusinessLogicLayer;

public partial class TeachHelper_Controls_ViewAchievement : System.Web.UI.UserControl
{
    DataSet ds;

    protected void Page_Load(object sender, EventArgs e)
    {
        //对于没有数字的内容，下面这行完全满足要求，但加了数字就不行，必须调用OnItemDataBound
        this.GridViewViewAchievement.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");

        if (!IsPostBack)
        {
            this.DropDownListSubjects.DataBind();
            ListItem li = new ListItem("全部", "0");
            this.DropDownListSubjects.Items.Insert(0, li);
            ds = Achievement.GetMyAchievemnet();

            BindData();
        }
    }

    protected void DropDownListSubjects_SelectedIndexChanged(object sender, EventArgs e)
    {
        int subjectId = Convert.ToInt32(this.DropDownListSubjects.SelectedValue);
        if (subjectId == 0)
        {
            ds = Achievement.GetMyAchievemnet();
        }
        else
        {
            ds = Achievement.GetMyAchievemnetBySubjectId(subjectId);
        }

        BindData();
    }

    protected void GridViewViewAchievement_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
    {
        int index = Convert.ToInt32(e.NewSelectedIndex);
        GridViewRow row = this.GridViewViewAchievement.Rows[index];
        int achievementId = Convert.ToInt32(Server.HtmlDecode(row.Cells[0].Text.Trim()));

        OpenViewAchievementReport(achievementId);
    }

    protected void GridViewViewAchievement_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        this.GridViewViewAchievement.PageIndex = e.NewPageIndex;
        BindData();
    }

    private void OpenViewAchievementReport(int achievementId)
    {
        Session.Add("AchievementId", achievementId);

        string url = "../ViewAchievementReport.aspx";
        string str = "<script type=\"text/JavaScript\">window.open('" + url + "','查看报表','width=700,height=500');</script>";
        Response.Write(str);
    }

    protected void ButtonViewAll_Click(object sender, EventArgs e)
    {
        OpenViewAchievementReport(0);
    }

    private void BindData()
    {
        if (ds.Tables[0].Rows.Count == 0)
        {
            this.LabelMessage.Visible = true;
            this.LabelMessage.Text = "没有数据";
        }
        else
        {
            this.LabelMessage.Visible = false;
        }

        this.GridViewViewAchievement.DataSource = ds;
        this.GridViewViewAchievement.DataBind();
    }

}