filelist.aspx.cs

asp做的新闻系统

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

namespace Web.SysAdmin
{
	public class FileList : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.ImageButton BtnQuery;
		
		private DataSet OleDs;
		private Web.DataAccess.DataAccess Das = new DataAccess.DataAccess();

		protected System.Web.UI.WebControls.Panel PalArticle;
		protected System.Web.UI.HtmlControls.HtmlTable Table1;
		protected System.Web.UI.WebControls.DataGrid GrdFile;
		protected System.Web.UI.WebControls.Panel PalView;
		protected System.Web.UI.WebControls.TextBox TxtState;
		protected System.Web.UI.WebControls.ImageButton IbtQuery;
				
		const int nGrdRows = 10;
		
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
				BindGrdFile();
		}

		#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.GrdFile.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.GrdFile_PageIndexChanged);
			this.GrdFile.SortCommand += new System.Web.UI.WebControls.DataGridSortCommandEventHandler(this.GrdFile_SortCommand);
			this.ID = "Form1";
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
			
		//刷新GrdFile
		private void BindGrdFile()
		{

			OleDs = new DataSet();

			OleDs=Das.GetDataSet("select id,filename,ContentType,datetime from uploadfile");
			GrdFile.DataSource=OleDs;
			
			int nPage=0;
			nPage = GrdFile.CurrentPageIndex;
			GrdFile.CurrentPageIndex =0;
			GrdFile.DataBind();

			if ((nPage >= GrdFile.PageCount) && (GrdFile.PageCount > 0))
			{
				nPage = GrdFile.PageCount - 1;
			}
			
			GrdFile.CurrentPageIndex = nPage;
			GrdFile.DataBind();
		}


		//换页
		private void GrdFile_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			GrdFile.CurrentPageIndex = e.NewPageIndex;
			BindGrdFile();
		}

		//排序
		private void GrdFile_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
		{
			DataView dv = new DataView();
			BindGrdFile();
			dv.Table = OleDs.Tables[0];
			dv.Sort = e.SortExpression;
			GrdFile.DataSource = dv;
			GrdFile.DataBind();
			GrdFile.EditItemIndex = -1;
			GrdFile.SelectedIndex = 0;
		}
	}
}