Send ASP.NET formatted exception details via email

We can include some more information like browser, client's IP address etc.

string result = "";
System.IO.StreamReader objReader = default(System.IO.StreamReader);
objReader = new System.IO.StreamReader("error.htm");

result = objReader.ReadToEnd();
objReader.Close();
result = result.Replace("{%Time%}", DateTime.Now.ToLocalTime().ToString());
result = result.Replace("{%ErrorUrl%}", Request.Url.AbsoluteUri.ToString());
result = result.Replace("{%Browser%}", Request.Browser.Type.ToString() + 
         "<br/>" + Request.Browser.Browser.ToString());
result = result.Replace("{%ClientIP%}", Request.UserHostAddress.ToString());

result = result.Replace("{%ErrorDetail%}", Context.Server.GetLastError().ToString());

if (Request.UrlReferrer != null)
{
    result = result.Replace("{%ReferrerUrl%}", 
             Request.UrlReferrer.AbsoluteUri.ToString());
}
else
{
    result = result.Replace("{%ReferrerUrl%}", "None");
}


/*******************************************************
error.htm
Hello,

An Error occurred on {%Website%} at {%Time%}. 

Page URL: {%ErrorUrl%} 

Referral URL:{%ReferrerUrl%} 

Browser Type: {%Browser%} 

Client IP Address: {%ClientIP%} 

UserName: {%username%} 

Error Detail: 

{%ErrorDetail%} 

*******************************************************/