一个Ajax.NET的查询实例

  因为项目中只能用。net 1.1,所以atlas是用不了了,只能玩玩AjaxProfession.net, 下面是一个查询的案例。 在页面上放置一个DataGrid1,各种查询结果均放入其中,在client端的JS中将SQL语句传给server端的方法,执行一个查询,并可以控 制双击行是否展开一个新的查询。可将DataGrid1的内容导出到Excel中、模拟gmail的Ajax的loading运用    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 System.Data.SqlClient;
    using System.IO;
    namespace eol
    {
    /**//// <summary>
    /// index 的摘要描述。
    /// </summary>
    public class index : System.Web.UI.Page
    {
    protected System.Web.UI.WebControls.TextBox TextBox1;
    protected WebControlLibrary.InputCalendar startTime;
    protected WebControlLibrary.InputCalendar endTime;
    protected WebControlLibrary.InputCalendar pStartTime;
    protected WebControlLibrary.InputCalendar pEndTime;
    protected System.Data.SqlClient.SqlConnection Conn=new SqlConnection();
    protected System.Web.UI.WebControls.TextBox eformsn;
    protected System.Web.UI.WebControls.Label Label1;
    protected System.Web.UI.WebControls.DataGrid DataGrid1=new DataGrid();
    protected System.Web.UI.WebControls.Button Button2;
    protected System.Web.UI.HtmlControls.HtmlInputText applicant;
    public string toExcel;
    private void Page_Load(object sender, System.EventArgs e)
    {
    AjaxPro.Utility.RegisterTypeForAjax(typeof(eol.index));
    }
    public DataSet DB(string dataName, string sqlCmd)
    {
    string connStr="server=172.16.0.120;uid=msikdb;pwd=dbmsik;database="+dataName;
    Conn.ConnectionString=connStr;
    try
    {
    Conn.Open();
    }
    catch(Exception ex)
    {
    Conn.Close();
    Response.Write(ex.Message);
    }
    SqlCommand cmd=new SqlCommand(sqlCmd, Conn);
    SqlDataAdapter da=new SqlDataAdapter();
    da.SelectCommand=cmd;
    DataSet ds = new DataSet();
    da.Fill(ds);
    Conn.Close();
    return ds;
    }
    Web Form 设计工具产生的程式码#region Web Form 设计工具产生的程式码
    override protected void OnInit(EventArgs e)
    {
    //
    // CODEGEN: 此为 ASP.NET Web Form 设计工具所需的呼叫。
    //
    InitializeComponent();
    base.OnInit(e);
    }
    /**//// <summary>
    /// 此为设计工具支援所必须的方法 - 请勿使用程式码编辑器修改
    /// 这个方法的内容。
    /// </summary>
    private void InitializeComponent()
    {
    this.Conn = new System.Data.SqlClient.SqlConnection();
    this.Button2.Click += new System.EventHandler(this.Button2_Click);
    this.DataGrid1.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.getPageIndexStyle);
    this.Load += new System.EventHandler(this.Page_Load);
    }
    #endregion
    private void getPageIndexStyle(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
    {
    if(e.Item.ItemType == ListItemType.Pager)
    {
    e.Item.Cells[0].Text="Total Row:"+this.DataGrid1.Items.Count.ToString();
    }
    }
    [AjaxPro.AjaxMethod]
    public string AjaxData(string sSql, bool clientEvent)
    {
    if (clientEvent)
    {
    DataGrid1.ItemDataBound+=new DataGridItemEventHandler(DataGrid1_ItemDataBound);
    }
    // DataGrid1.AllowPaging=true;
    // DataGrid1.PagerStyle.Position=PagerPosition.Top;
    // DataGrid1.PagerStyle.Mode=PagerMode.NumericPages;
    // DataGrid1.ItemCreated+=new DataGridItemEventHandler(getPageIndexStyle);
    DataGrid1.DataSource=DB("query",sSql);
    DataGrid1.HeaderStyle.BackColor=System.Drawing.Color.Blue;
    DataGrid1.Width=Unit.Percentage(100);
    DataGrid1.HeaderStyle.ForeColor=System.Drawing.Color.White;
    DataGrid1.DataBind();
    System.Text.StringBuilder sb=new System.Text.StringBuilder();
    System.IO.StringWriter sw=new System.IO.StringWriter(sb);
    System.Web.UI.HtmlTextWriter htw=new HtmlTextWriter(sw);
    this.DataGrid1.RenderControl(htw);
    string s=sb.ToString()。Replace(" 上午 12:00:00", "");
    this.toExcel=s;
    Session["txtExcel"]=s;
    return s;
    }
    public void setToExcel()
    {
    //下面这行很重要,attachment 参数表示作为附件下载,您可以改成online在线打开
    //filename=FileFlow.xls 指定输出文件的名称,注意其扩展名和指定文件类型相符,可以为:。doc .xls .txt .htm
    Response.AppendHeader("Content-Disposition","attachment;filename=EOL_"+eformsn.Text+".xls");
    Response.ContentEncoding=System.Text.Encoding.GetEncoding("big5");
    //Response.ContentType指定文件类型 可以为application/ms-excel,application/ms-word ,application/ms-txt,application/ms-html或其他浏览器可直接支持文档
    Response.ContentType = "application/ms-excel";
    Response.Write(this.toExcel);
    Response.Write(Session["txtExcel"]);
    Session.Abandon();
    Response.End();
    }
    private void Button2_Click(object sender, System.EventArgs e)
    {
    setToExcel();
    }
    private void DataGrid1_ItemDataBound(object sender, DataGridItemEventArgs e)
    {
    ListItemType itemtype=(ListItemType)e.Item.ItemType;
    if (itemtype!=ListItemType.Header && itemtype!=ListItemType.Footer && itemtype!=ListItemType.Separator)
    {
    e.Item.Attributes.Add("ondblclick", "showDetail("+e.Item.Cells[1].Text+");");
    e.Item.Attributes.Add("onmouseover","this.className='mouseOn'");
    e.Item.Attributes.Add("onmouseout", "this.className=''");
    }
    }
    }
    }
    Client端的js:
    <script language="javascript">
    var obj=document.all;
    var frm=document.forms[0];
    var box=document.getElementById("detail");

发表回复

您的邮箱地址不会被公开。 必填项已用 * 标注

Grow your business fast with

Suku