error : Access is denied

Question

I trying download a excel file from path 

 

when i copy and paste path from variable "savepath" and paste in pc folder its works fine 

But i am getting error on this lne 

context.Response.WriteFile(savepath); 

 

 

[System.Web.Services.WebMethod(EnableSession = true)]

public void ProcessRequest(HttpContext context)

{

try

{

string savepath = "";

string tempPath = "";

tempPath = System.Configuration.ConfigurationManager.AppSettings["ManualExcel"];

savepath = context.Server.MapPath(tempPath);

context.Response.ContentType = "text/plain";

context.Response.AddHeader("Content-Disposition", "attachment; filename=" + "ManualEntry");

context.Response.WriteFile(savepath);

}

catch (Exception ex)

{

throw ex;

}

}

 

Please do need full to me