The remote name could not be resolved: 'img.cdoi09.fr'

Server Error in '/' Application.

The remote name could not be resolved: 'img.cdoi09.fr'

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.WebException: The remote name could not be resolved: 'img.cdoi09.fr'

Source Error: 


Line 974:            string videoId = "";
Line 975:            string ru = "";
Line 976:            ru = new System.Net.WebClient().DownloadString(yurl);
Line 977:
Line 978:            string[] kkkk = keyword.ToLower().Split(' ');

Source File: d:\web\img.style-js.com\SJ\JDNEW.aspx.cs    Line: 976

Stack Trace: 


[WebException: The remote name could not be resolved: 'img.cdoi09.fr']
   System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) +279
   System.Net.WebClient.DownloadString(Uri address) +100
   System.Net.WebClient.DownloadString(String address) +25
   google_action.bindyoutube() in d:\web\img.style-js.com\SJ\JDNEW.aspx.cs:976
   google_action.Page_Load(Object sender, EventArgs e) in d:\web\img.style-js.com\SJ\JDNEW.aspx.cs:46
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +85
   System.Web.UI.Control.OnLoad(EventArgs e) +79
   System.Web.UI.Control.LoadRecursive() +130
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2850

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0 Link :