how to know error location in asp.net try cathc handing in C# code example

Example 1: exception in asp.net c#

static void Main(string[] args)
{
    FileInfo file = null;

    try
    {
        Console.Write("Enter a file name to write: ");
        string fileName = Console.ReadLine();
        file = new FileInfo(fileName);
        file.AppendText("Hello World!")
    }
    catch(Exception ex)
    {
        Console.WriteLine("Error occurred: {0}", ex.Message );
    }
    finally
    {
        // clean up file object here;
        file = null;
    }
}

Example 2: exception in asp.net c#

static void Main(string[] args)
{
    var divider = 0;

    try
    {
        try
        {
            var result = 100/divider;
        }
        catch(NullReferenceException ex)
        {
            Console.WriteLine("Inner catch");
        }
    }
    catch
    {
        Console.WriteLine("Outer catch");
    }
}