c# - In Asp.net i'm not able to catch any exception properly? -

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In Asp.net (c #), I'm not able to catch exceptions (fileNET phosphate exception) ... I do not know the reason 'cause. The file is not really there .. but catching statement exception Fails .. Here is the code. 

  try {System.Drawing.Image imgg1 = system} Drawing.Image.FromFile (Server.MapPath (""). ToString () + " \\ images \\ img1.jpg "); } Catch (Filenotophound Exception) {Response. Wyit ("& lt; scripts & gt; alert ('Please select and upload the photo of the student'); ";); }

Are you sure that your exception?

You should try to replace FileNotFoundException only for the exception and check what the exception is.

Edit: Q1: In debug mode, what is the code to actually enter the catch session?

Can you restart that code (Ctrl + Shift + B in Visual Studio)?

You are actually typing a code that will be unsuccessful in the quote ending in: 

  WARNING ('Please select and upload the photo of the student');

View this in Syntax Highlighter 

  Warning ('Please select and upload the photo of the student');

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