c# how to stop exception from bubbling up - c#-4.0

Question

when exception is thrown in my controller, action's are getting executed again and again, when error is thrown this cycle is going on.
try
{
LogManager.Info("Call:" + invocation.TargetType.Name + "::" + invocation.Method.Name);
var startTime = DateTime.Now;
invocation.Proceed();
var endTime = DateTime.Now;
LogManager.Info("CallEnd:" + invocation.TargetType.Name + "::" + invocation.Method.Name + " Execution Time(Milliseconds): " + (endTime - startTime).Milliseconds);
}
catch (Exception ex)
{
//HttpContext.Current.Request.Abort();
var builder = new StringBuilder();
var dataSource = ConfigurationManager.ConnectionStrings["dbMain"].ToString().Split(';')[0];
builder.AppendLine();
builder.AppendLine(string.Concat(Enumerable.Repeat(">", 50)));
builder.AppendLine("Server Time:-" + DateTime.Now);
//builder.AppendLine("Requested Url:" + HttpContext.Current.Request.Url);
builder.AppendLine(dataSource);
builder.AppendLine("Error at " + invocation.TargetType.Name + "::" + invocation.Method.Name + "(" + JsonConvert.SerializeObject(invocation.Arguments, Formatting.Indented) + ")");
builder.AppendLine(string.Concat(Enumerable.Repeat("-", 50)));
builder.AppendLine(JsonConvert.SerializeObject(ex, Formatting.Indented).Replace("\\n", System.Environment.NewLine));
builder.AppendLine(string.Concat(Enumerable.Repeat("<", 50)));
LogManager.Error(builder.ToString());
LogManager.SendMail(ex, builder.ToString());
throw;
}

Answer 1

If you want the exception to stop bubbling up, don't re-throw it.
In your code there is the :
"throw ;" line. Remove it.