ajaxsearchdemo.aspx.cs

AJAX简单入门,适合入门的新手哦,里面有简单的实例,可以让大家一边变得实验,来发现不同,很容易上手,对那些刚刚入门的朋友也许会有帮助

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
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 WebUI.AjaxSearch
{
	/// <summary>
	/// AjaxSearchDemo 的摘要说明。
	/// </summary>
	public class AjaxSearchDemo : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected System.Web.UI.WebControls.Button btnSearch;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			string strTableName = "employee";
			this.btnSearch.Attributes["OnClick"] = "javascript:window.showModalDialog('AjaxSeachPage.aspx?table="+strTableName+"','','dialogWidth:800px;dialogHeight:600px;status: No;help: No;');";
		}

		#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.btnSearch.Click += new System.EventHandler(this.btnSearch_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnSearch_Click(object sender, System.EventArgs e)
		{
			string sqlSyntax = "Select * from employee ";
			object oSession = Session[WebUI.AjaxSearchSystem.AjaxSeachPage.SEARCH_WHERE_SESSION];

			string strWhere = oSession==null?string.Empty:oSession.ToString();

			if (strWhere.Length != 0)
			{
				sqlSyntax += " where "+strWhere;
			}

			DataSet ds = new DataSet();

			try
			{
				SqlConnection sc = new SqlConnection("server=OY-M;User ID=sa;Password=;database=pubs;Connection Reset=FALSE;Connect Timeout=6");
				sc.Open();
				SqlCommand scmd = new SqlCommand(sqlSyntax,sc);
				SqlDataAdapter da = new SqlDataAdapter();
				da.SelectCommand = scmd;
				da.Fill(ds);
			}
			catch(SqlException ee)
			{
				throw ee;
			}

			DataGrid1.DataSource = ds;
			DataGrid1.DataBind();
		}
	}
}