recommendlist.aspx.cs

一个简单的Demo

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 Surance.DB4ODAL;
using Surance.DBUtility;
using Db4objects.Db4o;
using System.IO;
using Surance.Utility;
using Db4objects.Db4o.Query;

public partial class Back_RecommendList : System.Web.UI.Page
{
    private string editUrl = "RecommendUpdate.aspx?Title=";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGrid();
        }
    }

    private void BindGrid()
    {
        IObjectContainer db = DB4OHelper.DB;
        try
        {

            Recommend item = new Recommend();
            item.Db = db;
            IObjectSet sets = item.GetAll();



            GridView1.DataSource = sets;
            GridView1.DataBind();
        }
        catch
        {

        }
        finally
        {
            db.Close();
        }




    }
    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        int index = Convert.ToInt32(e.CommandArgument.ToString().Trim());
        string title = GridView1.Rows[index].Cells[0].Text.Trim();
        switch (e.CommandName)
        {
            case "Edit":
                {
                    Response.Redirect(editUrl + title);
                    break;
                }
            case "Del":
                {
                    Del(title);
                    break;
                }
        }
    }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.RowIndex > -1)
            {
                LinkButton b = (LinkButton)e.Row.Cells[5].Controls[0];
                b.Attributes.Add("onClick", "javascript:return confirm('Are you sure to delete？');");


            }
        }
    }
    private void Del(string title)
    {
        IObjectContainer db = DB4OHelper.DB;
        Recommend item = new Recommend(db);
        //string pictureName = string.Empty;
        try
        {
            Recommend target = (Recommend)item.GetOne(title);
            if (target != null)
            {
                target.Db = db;
                //item.Del(target);
                target.Del();
                //pictureName = item.Picture;
            }
        }
        catch (Exception e)
        {
            Response.Write(e.Message);
        }
        finally
        {
            db.Close();
        }

        //del the picture
        //if (string.IsNullOrEmpty(pictureName))
        //{
        //    File.Delete(Tools.GetPictureSavePath() + pictureName);
        //}

        BindGrid();
    }


}