无法使用Windows Service解析主机名

问题描述

大家好，
我正在VS2005 c#中从事Windows服务项目的工作，该项目将定期监视数据库状态，并在出现任何问题时将SMS发送给相关人员.

现在的问题是，连接到Internet发送SMS时，webclient类对象出现错误:
无法解析远程名称".

但是在单击某些按钮时，相同的代码也可与WindowsApplication一起使用.凭据有什么区别.


代码如下:

Hi All,
I am working on windows service project in VS2005 c#, which monitors Database status after regular intervals and in case of any problem sends SMS to concerned person.

Now the problem is that when connecting to internet for sending SMS, the webclient class object through an error:
"The remote name could not be resolved".

But same code is working with windowsApplication on some button click. Is there any difference in credentials.


Code is as follow:

protected override void OnStart(string[] args)
{
WebClient webClient = new WebClient();
try
{
   wtr = new StreamWriter(@"c:\SMS.txt");
   wtr.WriteLine("sms Application");
   string sms = webClient.DownloadString("http://www.google.com");//Sample Domain
   wtr.WriteLine("sms");
   wtr.Close();
}
catch (Exception ex)
{
   wtr.WriteLine(ex.Message);
   wtr.Close();
}
}

预先感谢

Thanx in advance

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