使用jQuery从javascript函数中的另一个页面调用C#方法
在GridViewData.aspx.cs中，我想在JavaCScript函数中调用一个方法使用jQuery从javascript函数中的另一个页面调用C#方法,c#,javascript,jquery,asp.net,C#,Javascript,Jquery,Asp.net,在GridViewData.aspx.cs中，我想在JavaCScript函数中调用一个方法 //This simple example method is from GridViewData.aspx.cs private int ValidateNameUpdateable() { return 22; } 我想从default.aspx中的Javascript调用此函数 <script type="text/javascript"> function
//This simple example method is from GridViewData.aspx.cs
private int ValidateNameUpdateable()
{
return 22;
}
<script type="text/javascript">
function validateForm()
{
if (ValidateNameUpdateable==22)
{
alert("Name is not updateable, the party already started.");
return false;
}
//if all is good let it update
UpdateInsertData()
}
</script>
看看这个问题： 它展示了如何做到这一点 例如： Default.aspx：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
</head>
<body>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
<!--
$(function () {
$.ajax({
type: "POST",
url: "WebService.asmx/ValidateNameUpdateable",
data: "{\"input\":5}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
// (msg.d is the retrieved data)
var d = msg.d;
if (d == 22) {
alert("OK");
}
else {
alert("Not OK");
}
},
error: function (msg) {
}
});
});
//-->
</script>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
</head>
<body>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
<!--
$(function () {
function getRecord(id) {
$.ajax({
type: "POST",
url: "WebService.asmx/GetRecord",
data: "{\"id\":" + id + "}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
// (msg.d is the retrieved data)
var d = $.parseJSON(msg.d);
if (d.RecordExists) {
alert("Record with id: " + d.ID + "\nFirstName: " + d.FirstName + "\nLastName: " + d.LastName);
}
else {
alert("Record doesn't exist.");
}
},
error: function (msg) {
}
});
}
getRecord(1);
getRecord(4);
getRecord(0);
});
//-->
</script>
</body>
</html>
使用系统；
使用System.Collections.Generic；
使用System.Linq；
使用System.Web；
使用System.Web.Services；
///
///WebService的摘要描述
///
[System.Web.Script.Services.ScriptService]
[WebService（命名空间=”http://tempuri.org/“）]/我想您正在寻找ajax。它允许您对服务器进行异步调用并获得result。您应该创建一个简单的aspx页面，该页面包含一些请求参数并输出正确的信息。然后使用ajax调用load页面并获得结果
下面是ajax的基本概述
下面是jqueryajax调用
也许您的解决方案是使用load（）：
您不能直接这样做，例如，您需要通过httphandler（ashx）发布数据。然后处理程序返回一个json对象。你深入研究以找到你想要的答案
[]的谢谢Aidiakapi，但是如果只调用方法而不是web服务，我该怎么做呢？即使很难，我也不会建议，答案中的第一个链接是：我之所以不建议，是因为它又是web标准，使用一个您遵循所有定义标准的web服务，用直接的方法你不会这么做。但它是有效的，我想这是最重要的。好的，我会参考它，我有足够的库。我认为只有当某个外部方需要使用信息时，才可以使用web服务。好吧，web服务的优点是可供其他方使用，但顾名思义，它提供数据，以及数据提供到何处并不重要。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
/// <summary>
/// Summary description for WebService
/// </summary>
[System.Web.Script.Services.ScriptService]
[WebService(Namespace = "http://tempuri.org/")] // <-- Put something like: services.yourdomain.com in here.
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class WebService : System.Web.Services.WebService {
[WebMethod]
public int ValidateNameUpdateable(int input)
{
return input == 5 ? 22 : -1;
}
}
<%@ WebService Language="C#" CodeBehind="~/App_Code/WebService.cs" Class="WebService" %>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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></title>
</head>
<body>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
<!--
$(function () {
function getRecord(id) {
$.ajax({
type: "POST",
url: "WebService.asmx/GetRecord",
data: "{\"id\":" + id + "}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
// (msg.d is the retrieved data)
var d = $.parseJSON(msg.d);
if (d.RecordExists) {
alert("Record with id: " + d.ID + "\nFirstName: " + d.FirstName + "\nLastName: " + d.LastName);
}
else {
alert("Record doesn't exist.");
}
},
error: function (msg) {
}
});
}
getRecord(1);
getRecord(4);
getRecord(0);
});
//-->
</script>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Script.Serialization;
/// <summary>
/// Summary description for WebService
/// </summary>
[System.Web.Script.Services.ScriptService]
[WebService(Namespace = "http://tempuri.org/")] // <-- Put something like: services.yourdomain.com in here.
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class WebService : System.Web.Services.WebService {
[Serializable]
protected class Record
{
public bool RecordExists { get; set; }
public int ID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public Record() // Initializes default values
{
RecordExists = true;
ID = 0;
FirstName = "";
LastName = "";
}
}
[WebMethod]
public string GetRecord(int id)
{
// Initialize the result
Record resultRecord = new Record();
resultRecord.RecordExists = true;
resultRecord.ID = id;
// Query database to get record...
switch (id)
{
case 0:
resultRecord.FirstName = "John";
resultRecord.LastName = "Something";
break;
case 1:
resultRecord.FirstName = "Foo";
resultRecord.LastName = "Foo2";
break;
default:
resultRecord.RecordExists = false;
break;
}
// Serialize the result here, and return it to JavaScript.
// The JavaScriptSerializer serializes to JSON.
return new JavaScriptSerializer().Serialize(resultRecord);
}
}