网络服务错误500内部错误asp.net [英] webservice error 500 Internal Error asp.net

问题描述

我已经在文档准备好函数中的JQuery中编写了一个Web服务调用，但未调用该函数

I have written a webservice call in JQuery in document ready function but its not calling the function

下面是代码 jQuery

Below is the code JQuery

`<script type="text/javascript">
$( document ).ready(function() {
var section = "Table - TLI (STOCK)";
$.ajax({
type: "GET",contentType: "application/json; charset=utf-8",
        url: "pgWebService.aspx/SliderBlock",
        dataType: "json",
        data: "{'section':'" + section + "'}",
        success: function (res) {
            //$("#Text1").val(res.text);
            console.log(res);
            alert("DONE");
        }
    });
});
</script>`

C#代码 pgWebService

C# Code pgWebService

public static string SliderBlock(string section)
{
    string html = "<ul class='maketabs listing-table search-filter change-view'>";
    SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["TLI"].ConnectionString);
    SqlCommand cmd = new SqlCommand();
    cn.Open();
    cmd.Connection = cn;
    cmd.CommandText = "Select * from CategoryDetails where section=" + section;
    SqlDataReader rs = cmd.ExecuteReader();
    while (rs.Read())
    {
        html="<li>"+rs.getValue(0).toString()+"</li>";
    }
    rs.Close();
    cmd.Dispose();
    cn.Close();
    html = html + "</ul>";
    return html;
}

推荐答案

如果您的方法SliderBlock在后面的代码中，则使方法WebMethod被ajax调用.此外，您还需要使其成为static和要被GET调用，您需要在WebMethod上enable GET请求.

If your method SliderBlock is in code behind than make your method WebMethod to be called by ajax.Also you need to make it static and to be called by GET you need to enable GET requests on your WebMethod.

[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod(UseHttpGet = true)]
public static string SliderBlock(string section)
{
//Your code here
}

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