DemoWebUI/admin/courseManage.aspx.cs

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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 System.Data.SqlClient;

public partial class admin_courseManage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["admin"] == null)
        {
            Response.Redirect("../default.aspx");
        }
        else if (!IsPostBack)
        {
            bind();
        }
    }
    public void bind()
    {
        SqlConnection conn = baseClass.GetCon();
        conn.Open();
        SqlDataAdapter myda = new SqlDataAdapter("select * from tb_course order by courseId", conn);
        DataSet myds = new DataSet();
        myda.Fill(myds, "course");
        GridView2.DataSource = myds;
        GridView2.DataKeyNames = new string[] { "id" };
        GridView2.DataBind();
        conn.Close();
    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView2.PageIndex = e.NewPageIndex;
        string strsql = "select * from tb_course order by courseId";
        baseClass.BindDG(GridView2, "ID", strsql, "course");
    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView2.EditIndex = -1;
        bind();
    }
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        string sqlstr = "delete from tb_course where id=" + GridView2.DataKeys[e.RowIndex].Value.ToString() + "";
       
        baseClass.OperateData(sqlstr);
      
        bind();
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView2.EditIndex = e.NewEditIndex;
        bind();