webservice错误 郁闷 急！

[Sucre_Faith]

using System;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml.Linq;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;

/// <summary>
///GetProducts 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService()]
//若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。 
// [System.Web.Script.Services.ScriptService]
public class GetProducts : System.Web.Services.WebService {

    public GetProducts () {

        //如果使用设计的组件，请取消注释以下行 
        //InitializeComponent(); 
    }

    [WebMethod]
    public string[]  GetProductList(string prefixText ,int count)
    {
        Product p = new Product();
        SqlDataAdapter da = p.GetProduct();
        DataSet ds = new DataSet();
        da.Fill(ds);
        int j = 0;
        int sum = ds.Tables[0].Rows.Count;
        int length = prefixText.Length;
        List<string> products = null;
        //string[] products = new string[sum];
        for (int i = 0; i < sum; i++)
        {
            string SortID = ds.Tables[0].Rows[i]["SortID"].ToString();
            string Name = ds.Tables[0].Rows[i]["Name"].ToString();
            string Brand = ds.Tables[0].Rows[i]["Brand"].ToString();
            string Type = ds.Tables[0].Rows[i]["Type"].ToString();
            if (SortID.Substring(0, length).ToString() == prefixText || SortID.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(SortID);
                    j++;
                    if (j > (count-1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }
            if (Name.Substring(0, length).ToString() == prefixText || Name.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(Name);
                    j++;
                    if (j > (count - 1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }
            if (Brand.Substring(0, length).ToString() == prefixText || Brand.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(Brand);
                    j++;
                    if (j > (count - 1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }
            if (Type.Substring(0, length).ToString() == prefixText || Type.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(Type);
                    j++;
                    if (j > (count - 1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }

        }
        string[] product = products.ToArray();

        return product;
    }  
}

用断点执行到这 products.Add(SortID);
直接出错
HTTP500内部错误
最可能的原因是:
该网站正在进行维护。
该网站有程序错误。

[cwmwss]

友情帮顶!

[IMAGSE]

友情绑定Too

[net_xiaojian]

List<string> products = null;

改成

List<string> products = new List<string>();

试试.

[net_xiaojian]

提个建议

if (SortID.Substring(0, length).ToString() == prefixText || SortID.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(SortID);
                    j++;
                    if (j > (count-1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }
            if (Name.Substring(0, length).ToString() == prefixText || Name.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(Name);
                    j++;
                    if (j > (count - 1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }
            if (Brand.Substring(0, length).ToString() == prefixText || Brand.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(Brand);
                    j++;
                    if (j > (count - 1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }
            if (Type.Substring(0, length).ToString() == prefixText || Type.Substring(0, length).ToString().ToLower() == prefixText)
            {
                try
                {
                    products.Add(Type);
                    j++;
                    if (j > (count - 1))
                    {
                        break;
                    }
                }
                catch (System.Web.Services.Protocols.SoapException err)
                {
                    string strerr = err.Message + err.Detail.InnerText;
                }
            }

这段代码可以封装的.

[APOLLO_TS]

[Quote=引用 3 楼 net_xiaojian 的回复:]
List <string> products = null;

改成

List <string> products = new List <string>();

试试.
[/Quote]

应该可以next了！

[conan19771130]

楼上正确，products=null不可以add

[leo_bogard]

up

[Sucre_Faith]

请问 怎么封装呢