请教关于返回值的问题，在线等

C# code

 public    HDIP(string hdip)//此处如何来获得hdip的值，因为下一个buttonclick需要用到hdip的值    {         try        {            string path = HttpContext.Current.Server.MapPath(MachineIpfilepath);            XmlDocument xmlDoc = new XmlDocument();            xmlDoc.Load(path);            XmlNodeList nodeList = xmlDoc.SelectSingleNode("Machineip").ChildNodes;            foreach (XmlNode xn in nodeList)            {                XmlElement xe = (XmlElement)xn;                if (xe.Name == "HdCamera")                {                    hdip = xe.SelectSingleNode("ip").InnerText.Trim();                    break;                }            }                   }        catch        {                    }        finally        {        } //获得HdCameraIp                     }

[解决办法]
public void HDIP( out string hdip)｛....｝
[解决办法]
public void HDIP(ref string hdip)

HDIP(ref "asdasd")
[解决办法]

探讨

好像不行哎

C# code


protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
NetInfo.CamIpAddr = //此处需要调用到hdip
}