asp.net ajax 环境 c#与js互调
1.JS和.Net前后臺互相調用總結
HTML code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="JavaScript get Net Function.aspx.cs" Inherits="JavaScript_get_Net_Function" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>前臺與后臺方法護調總結</title>
<%--
JavaScript異步調用定義在ASP.Net頁面中的方法, 我們需要:
1.將該方法聲明為公有(public);
2.將該方法聲明為類方法(C#中的static,VB.NET中的Shared),而不是實例方法;
3.將該方法添加【WebMethod】屬性
4.將頁面中ScriptManager控件的EnablePageMethods屬性設置為true;
5.在客戶端使用如下JavaScript語法調用該頁面方法
PageMethods.[MethodName](param1,param2,...,callbackFunction);
6.為客戶端異步調用指定回調函數,在回調函數中接受返回值并進一步處理;
7.添加 using System.Web.Services;
--%>
<%--
ASP.Net后臺調用JavaScript function的方法,我們要注意:
1.盡量少用Response.Write(<script></script>);這種方法,它會影響CSS導致頁面效果偏差
2.C#中使用ScriptManager.RegisterStartupScript(this, this.GetType(), "edit", "JS('"+param1+"','"+param2+"')", true);
3.添加 using System.Web.UI;
--%>
<script type="text/javascript">
/*-------------JavaScript調用.Net后臺Start----------------------------------*/
function JsCallCSharp(param1)
{
PageMethods.SayHelloFromPage(param1,onSayHelloSucceeded);
}
function onSayHelloSucceeded(result)
{
alert(result);
}
/*-------------JavaScript調用.Net后臺End----------------------------------*/
/*-------------.Net調用JavaScript Start-----------------------------------*/
function CSharpCallJs(param1,param2)
{
alert(param1 + param2);
}
/*-------------.Net調用JavaScript Start-----------------------------------*/
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server" />
</div>
<asp:Button ID="Button1" onclick="Button1_Click" OnClientClick="JsCallCSharp('takako');" runat="server" Text="Button1" />
</form>
</body>
</html>
C# code
using System;
using System.Web.Services;
using System.Web.UI;
public partial class JavaScript_get_Net_Function : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string param1 = "你好:";
string param2 = "takako_mu";
ScriptManager.RegisterStartupScript(this, this.GetType(), "edit", "CSharpCallJs('" + param1 + "','" + param2 + "');", true);
}
[WebMethod]
public static string SayHelloFromPage(string name)
{
return string.Format("Hello {0}!", name);
}
}
2.Js調用WebService總結
JScript code
/*--相當于GridViewBind()-------------------------------------------------------------------------------------------*/
function Search(pagesize,pageCurrentCount)
{
var UserName=$get("optSelectUserName").value;
var Project=$get("optSelectProject").value;
GetData(pagesize,pageCurrentCount,UserName,Project);
return false;
}
function GetData(pagesize,pageCurrentCount,userName, project)
{
$get("displayImage").style.display="block";
var UserName=userName;
var Project=project;
WebService_AJAXGridView.GetData(pagesize,pageCurrentCount,UserName, Project, SucceededCallback, FailedCallback,"XmlDocument");
}
function SucceededCallback(result, userContext, methodName)
{
if (userContext == "XmlDocument")
{
UpdateTable(result);
}
$get("displayImage").style.display="none";
//document.getElementById("lab_TotalPage").innerText=
}
function FailedCallback(error)
{
// Display the error.
var stackTrace=error.get_stackTrace();
var message= error.get_message();
var statusCode=error.get_statusCode();
var exceptionType=error.get_exceptionType();
var timeout=error.get_timedOut();
var errstr="推疊追蹤: "+ stackTrace+"\n";
errstr+="服務錯誤:"+ message+"\n";
errstr+="狀態碼:"+ statusCode+"\n";
errstr+="例外類型:"+ exceptionType+"\n";
errstr+="逾時:"+ timeout+"\n";
errstr+="請關掉IE, 重新進入 !!";
alert(errstr);
$get("displayImage").style.display="none";
}
/*--相當于GridViewBind()-------------------------------------------------------------------------------------------*/
C# code
//WebService
using System;
using System.Data;
using System.Xml;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
using System.Web.Script.Serialization;
using System.Web.Security;
using System.Xml.Linq;
using System.Data.Sql;
using System.Data.SqlClient;
/// <summary>
/// WebService_AJAXGridView 的摘要描述
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// 若要允許使用 ASP.NET AJAX 從指令碼呼叫此 Web 服務，請取消註解下一行。
[System.Web.Script.Services.ScriptService]
public class WebService_AJAXGridView : System.Web.Services.WebService {
public WebService_AJAXGridView () {
//如果使用設計的元件，請取消註解下行程式碼
//InitializeComponent();
}
//Create By Takako_Yang,at 2008/12/04
[WebMethod(Description = "My AJAX Gridview Data Select", EnableSession = true)]
[ScriptMethod(ResponseFormat = ResponseFormat.Xml)]
public XmlDocument GetData(int pagesize,int pageCurrentCount,string userName, string project)
{
DailyWorkFactory myDailyWorkFactory = new DailyWorkFactory();
DataTable dt = myDailyWorkFactory.GetDailyWork(0, 1,pagesize,pageCurrentCount, userName, project, "");//flag1用來判斷Select來源自現有的，還是編輯時Create的新的
StringBuilder sb = new StringBuilder();
sb.Append("<AJAXSet>");
//select [No],Project,Item,Code,[Description (purpose/value)],
//Status,[%],[Start Date],[Due Date],Owner,[Day/Hour] from daily_work
foreach (DataRow myDataRow in dt.Rows)
{
string No = myDataRow[0].ToString();
string Project1 = myDataRow[1].ToString();
string Item = myDataRow[2].ToString();
string Code = myDataRow[3].ToString();
string Desciption = myDataRow[4].ToString();
string Status = myDataRow[5].ToString();
string Percent = myDataRow[6].ToString();
string StartDate = (Convert.ToDateTime(myDataRow[7])).ToString("yyyy/MM/dd");
string DueDate = (Convert.ToDateTime(myDataRow[8])).ToString("yyyy/MM/dd");
string Owner = myDataRow[9].ToString();
string NeedTime = myDataRow[10].ToString();
sb.Append("<AJAXData>");
sb.Append("<P1>").Append(No).Append("</P1>");
sb.Append("<P2>").Append(Project1).Append("</P2>");
sb.Append("<P3>").Append(Item).Append("</P3>");
sb.Append("<P4>").Append(Code).Append("</P4>");
sb.Append("<P5>").Append(Desciption).Append("</P5>");
sb.Append("<P6>").Append(Status).Append("</P6>");
sb.Append("<P7>").Append(Percent).Append("</P7>");
sb.Append("<P8>").Append(StartDate).Append("</P8>");
sb.Append("<P9>").Append(DueDate).Append("</P9>");
sb.Append("<P10>").Append(Owner).Append("</P10>");
sb.Append("<P11>").Append(NeedTime).Append("</P11>");
sb.Append("</AJAXData>");
}
sb.Append("</AJAXSet>");
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(sb.ToString());
return xmlDoc;
}
