从javascript dosent work调用c#函数

时间:2013-03-09 22:23:54

标签: c# asp.net web-applications

我正在使用c#在asp.net中构建一个WebApplication,我在从JS调用c#函数时遇到了问题。

我的代码是这样的:

在js中:

Function doStuff()
{
    var service = new seatService.Service1();
    service.DoWork(id, onSuccess, null, null);
}

并且在服务页面中是:

[ServiceContract(Namespace = "seatService")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Service1 
{
    [OperationContract]
    public static  void DoWork(string id)
    {
      //here there is a function that calls the DB
    }
}   

奇怪的是它实际工作20次之一(使用相同的代码),但大部分时间它都失败了,我收到了消息:

  

未捕获的referenceEror - 未定义seatService。

,状态代码为500 Internal Server Error.

因为它有时工作而有时没有 - 我的问题在哪里?

1 个答案:

答案 0 :(得分:2)

您想使用PageMethods。以下是一些示例代码:

public partial class ContactUs : System.Web.UI.Page
{
   [WebMethod]
   public static void SendForm(string name, string email, string message)
   {
       if (string.IsNullOrEmpty(name))
           throw new Exception("You must supply a name.");    
       if (string.IsNullOrEmpty(email))
           throw new Exception("You must supply an email address.");   
       if (string.IsNullOrEmpty(message))
           throw new Exception("Please provide a message to send.");

       //call your web service here, or do whatever you wanted to do
   }
}

来自JavaScript:

SendForm = function() {
   var name = $get("NameTextBox").value;
   var email = $get("EmailTextBox").value;
   var message = $get("MessageTextBox").value;

   PageMethods.SendForm(name, email, message, OnSucceeded, OnFailed);
}    
OnSucceeded = function() {
   $get("ContactFieldset").innerHTML = "<p>Thank you!</p>";
}    
OnFailed = function(error) {
   alert(error.get_message());
}