参数没有传递给webmethod [英] parameter not passing to webmethod

问题描述

HI，

我需要将参数'999999999'传递给web服务，当我执行iam时收到错误System.InvalidOperationException：缺少参数：callerid。



请帮帮我。

I need to pass the parameter '999999999' to an webservice when i execute iam getting the error System.InvalidOperationException: Missing parameter: callerid.

pls help me out.

function SearchText() {
     $('#<%= txtusername.ClientID%>').autocomplete({
         source: function (request, response) {
             $.ajax({
                 type: "POST",
                 contentType: "application/json; charset=utf-8",
                 url: "../HttpHandler/Autocomplete.asmx/GetCallername",
                 data: "{'callerid':'" [phone]+ "'}",
                 dataType: "json",
                 success: function (data) {
                     response(data.d);
                     alert('i enter');
                 },
                 error: function (result) {
                     alert("Error");
                 }
             });
         }
     });
 }

webservice：

webservice :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using MSDataAccess;
using System.Data;

namespace Sun.HttpHandler
{
    /// <summary>
    /// Summary description for Autocomplete
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    // [System.Web.Script.Services.ScriptService]
    public class Autocomplete : System.Web.Services.WebService
    {

        [WebMethod]
        public string GetCallername(string callerid)
        {
            ConnectionCls clsConObj = new ConnectionCls();

            DataSet ds = null;
            string strPriorityOfCall = null;
            object[] obj = new object[6];
            obj[0] = 1;
            obj[1] = 1;
            obj[2] = 1;
            obj[3] = 1;
            obj[4] = 1;
            obj[5] = callerid;

            ds = DataAccess.ExecuteDataset(clsConObj.getConnectionString(), "sp_autoload", obj);
            if (ds.Tables[0].Rows[0]["CallerName"].ToString() != System.DBNull.Value.ToString())
            {
                return ds.Tables[0].Rows[0]["CallerName"].ToString();
            }
            else
            {
                return "User Doesnt Exist";
            }
        }
    }
}

推荐答案

（' ＃<％= txtusername.ClientID％>'）。autocomplete（{
source： function （请求，响应）{

('#<%= txtusername.ClientID%>').autocomplete({ source: function (request, response) {

.ajax（{
type： POST，
contentType： application / json; charset = utf-8，
url： .. /HttpHandler/Autocomplete.asmx/GetCallername，
data： {'callerid'： ' [phone]+ '}，
dataType： <跨度class =code-string> json，
成功： function （数据）{
response（data.d） ;
alert（' 我输入'）;
}，
错误： function （结果）{
alert（ 错误）;
}
}）;
}
}）;
}

.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "../HttpHandler/Autocomplete.asmx/GetCallername", data: "{'callerid':'" [phone]+ "'}", dataType: "json", success: function (data) { response(data.d); alert('i enter'); }, error: function (result) { alert("Error"); } }); } }); }

webservice：

webservice :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using MSDataAccess;
using System.Data;

namespace Sun.HttpHandler
{
    /// <summary>
    /// Summary description for Autocomplete
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    // [System.Web.Script.Services.ScriptService]
    public class Autocomplete : System.Web.Services.WebService
    {

        [WebMethod]
        public string GetCallername(string callerid)
        {
            ConnectionCls clsConObj = new ConnectionCls();

            DataSet ds = null;
            string strPriorityOfCall = null;
            object[] obj = new object[6];
            obj[0] = 1;
            obj[1] = 1;
            obj[2] = 1;
            obj[3] = 1;
            obj[4] = 1;
            obj[5] = callerid;

            ds = DataAccess.ExecuteDataset(clsConObj.getConnectionString(), "sp_autoload", obj);
            if (ds.Tables[0].Rows[0]["CallerName"].ToString() != System.DBNull.Value.ToString())
            {
                return ds.Tables[0].Rows[0]["CallerName"].ToString();
            }
            else
            {
                return "User Doesnt Exist";
            }
        }
    }
}

从报价中取出99999999。你基本上是添加数字加上字符串。由于它只是一个硬编码的数字，它是这样的：

Take the 99999999 out of the quotes. You essentially are adding the number plus the string. Since it is just a hard coded number do it like this:

data: "{'callerid':'9999999999'}",

这篇关于参数没有传递给webmethod的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！