liveexperiencenew.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 Surance.Utility;
using System.IO;

public partial class Back_LiveExperienceNew : System.Web.UI.Page
{
    private string listUrl = "LiveExperienceList.aspx";
    private string categoryModule = "LiveExperience";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindCategory();
        }
    }
    protected void btnSave_Click(object sender, EventArgs e)
    {
        if (Valid())
        {
            IObjectContainer db = DB4OHelper.DB;
            LiveExperience2 item = new LiveExperience2(db);
            string title = txtTitle.Text.Trim();
            string content = txtContent.Text.Trim();
            string cateogry = ddlCategory.SelectedValue.Trim();
            string url = txtUrl.Text.Trim();

            //string picture = "";
            try
            {
                item.Title = title;
                item.Content = content;
                item.CreateTime = DateTime.Now;
                item.Hit = 0;
                item.Category = cateogry;
                item.Url = url;

                if (FileUpload1.HasFile)
                {
                    //item.Picture = FileUpload1.FileName;
                    //string path = Tools.GetPictureSavePath() + FileUpload1.FileName;
                    string picture = Tools.GetPictureName() + Path.GetExtension(FileUpload1.PostedFile.FileName);
                    item.Picture = picture;
                    string path = Tools.GetPictureSavePath() + picture;
                    
                    FileUpload1.SaveAs(path);
                }
                else
                {
                    item.Picture = Tools.GetDefaultPicture();
                }
                //item.Add(item);
                item.Add();
                Message.Show("Add Success!");
            }
            catch(Exception e1)
            {
                Response.Write(e1.ToString());
                Message.Show("Add Fail!");
            }
            finally
            {
                db.Close();
            }
        }
    }
    private bool Valid()
    {
        bool result = true;
        if (result)
        {
            if (string.IsNullOrEmpty(txtTitle.Text.Trim()))
            {
                result = false;
                Message.Show("Title is not empty!");
            }
            else
            {
                result = true;
            }
        }



        if (result)
        {
            if (string.IsNullOrEmpty(txtContent.Text.Trim()))
            {
                result = false;
                Message.Show("Content is not empty!");
            }
            else
            {
                result = true;
            }
        }
        return result;
    }
    

    protected void btnList_Click(object sender, EventArgs e)
    {
        Response.Redirect(listUrl);
    }

    private void BindCategory()
    {
        IObjectContainer db = DB4OHelper.DB;
        try
        {
            Category c = new Category(db);
            ddlCategory.DataSource = c.GetByModule(categoryModule);
            ddlCategory.DataBind();
        }
        catch
        {

        }
        finally
        {
            db.Close();
        }
    }
}