viewphoto.aspx.cs

这个是网上相册系统的一个架构设计说明

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

using Utils;
using Model;

namespace AlbumOL
{
	/// <summary>
	/// ViewPhoto 的摘要说明。
	/// </summary>
	public class ViewPhoto : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label lbAlias;
		protected System.Web.UI.WebControls.Panel pWelcome;
		protected System.Web.UI.WebControls.Label lbPhotoName;
		protected System.Web.UI.WebControls.Panel pPhoto;
		protected System.Web.UI.WebControls.TextBox tbPhotoName;
		protected System.Web.UI.WebControls.Label lbDiscib;
		protected System.Web.UI.WebControls.Image imgPhoto;
		protected System.Web.UI.WebControls.Label lbKw1;
		protected System.Web.UI.WebControls.Label lbKw2;
		protected System.Web.UI.WebControls.Label lbKw3;
		protected System.Web.UI.WebControls.TextBox tbKw1;
		protected System.Web.UI.WebControls.TextBox tbKw2;
		protected System.Web.UI.WebControls.TextBox tbKw3;
		protected System.Web.UI.WebControls.TextBox tbDecrib;
		protected System.Web.UI.WebControls.Panel pPhotoEdit;
		protected System.Web.UI.HtmlControls.HtmlInputFile ffPhoto;
		protected System.Web.UI.WebControls.Button btnUpt;
		protected System.Web.UI.WebControls.Button btnDel;
		protected System.Web.UI.WebControls.Button btnOK;
		protected System.Web.UI.WebControls.Button btnCancel;
		protected System.Web.UI.WebControls.Panel p1;
	
		private DataRow _dataItem;

		private void Page_Load(object sender, System.EventArgs e)
		{
			WebUtils.CheckUser();
			lbAlias.Text = (User as MyPrincipal).Name;
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
			this.Load += new System.EventHandler(this.Page_Load);
			this.PreRender += new System.EventHandler(this.ViewPhoto_PreRender);

		}
		#endregion

		private void ViewPhoto_PreRender(object sender, System.EventArgs e)
		{
			int idCat = Int32.Parse(Request.Params["cat"]);
			int idPhoto = Int32.Parse(Request.Params["photo"]);
			CategoryModel model = new CategoryModel();
			DSPhoto ds = model.LoadByPrimaryKey(idCat) as DSPhoto;
			PhotoModel modelPhoto = new PhotoModel(ds);
			modelPhoto.LoadByCategory(ds.Category.FindByCategoryID(idCat));
			if(!this.IsPostBack && idPhoto < 0)
			{
				MyPrincipal prcpl = this.User as MyPrincipal;
				DSPhoto.PhotoRow row = ds.Photo.AddPhotoRow( "", prcpl.UserID, "", ds.Category[0], "", "", "");
				idPhoto = (int)row["PhotoID"];
				this.pPhoto.Visible = false;
				this.pPhotoEdit.Visible = true;
			}
			_dataItem = ds.Photo.FindByPhotoID(idPhoto);

			DataBind();

			this.ViewState["DataCache"] = model.DataSet;
		}

		private void btnOK_Click(object sender, System.EventArgs e)
		{
			DSPhoto ds = this.ViewState["DataCache"] as DSPhoto;
			Model.Model model = new CategoryModel(ds);
			Model.Model modelPhoto = new PhotoModel(ds);
			DSPhoto.PhotoRow row = ds.Photo[0];
			row.PhotoName = tbPhotoName.Text.Trim();
			row.Description = tbDecrib.Text.Trim();
			row.Keyword1 = tbKw1.Text.Trim();
			row.Keyword2 = tbKw2.Text.Trim();
			row.Keyword3 = tbKw3.Text.Trim();
			modelPhoto.Save(ds);

			ffPhoto.PostedFile.SaveAs(@"e:\inetpub\wwwroot\AlbumOL\PhotoFiles\photo" + row.PhotoID + ".jpg");
			Response.Redirect("BrowsePhoto.aspx?cat=" + row.CategoryID, true);
		}

		public DataRow DataItem
		{
			get
			{
				return _dataItem;
			}
			set
			{
			}
		}
	}
}