del_course.aspx.cs

项目开发完整系统

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 XTeamBBL;


public partial class Courses_Mgt_Del : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    private void init_couse()
    {
        string select_sql = "select * from course";
        DataSet ds = Course.select_course_name(select_sql);
        GridView1.DataSource = ds;
        GridView1.DataBind();
    }


    protected void BtnQuery_Click(object sender, EventArgs e)
    {
        string select_sql = "select * from course";
        if (TBxcourse_name.Text != "")
        {
            select_sql += " where course_name like '%" + TBxcourse_name.Text + "%'";

        }

        DataSet ds=Course.select_course_name(select_sql);
        GridView1.DataSource=ds;
        GridView1.DataBind();
    }

     protected void  GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        Boolean flag = true;
        int course_ID = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString());
        Course cr = new Course(course_ID);
        try
        {
           flag =Course.Del_course(cr);
        }
        catch (Exception)
        {
            Response.Write("<script>alert('删除失败,可能存在数据依赖,请先删除其他数据,再执行些操作');</script>");
        }
        finally
        {
            if (flag) { Response.Write("<script>alert('删除成功');</script>"); }
            else Response.Write("<script>alert('删除失败');</script>");
            string select_sql = "select * from course";
            DataSet ds = Course.select_course_name(select_sql);
            GridView1.DataSource = ds;
            GridView1.DataBind();
            
        }
       
    }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            ((LinkButton)(e.Row.Cells[5].Controls[0])).Attributes.Add("onclick", "return confirm('确定要删除吗')");
            e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E0E0E0';this.style.cursor='hand'");
            e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='white'");

        }
    }

}