Useful Regex (Regular Expressions)

Description JavaScript Java or C#
Integer No Spaces (anywhere) /^([\d]+)$|^$/g ^([\\d]+)$|^$
Empty String or Integer No Spaces (anywhere) /^([\d]+)$/g ^([\\d]+)$
Alfa or Numeric Characters Only /^[A-Za-z0-9]+$/ ^[A-Za-z0-9]+$
Alfa or Numeric Characters Plus listed Other Chars /^[A-Za-z0-9#!]+$/ ^[A-Za-z0-9#!]+$ Matches alpha or numeric or # or !

 

.NET MVC 3 Custom AJAX Error Handling

Custom Message From AJAX Error Handling with jQuery and MVC 3
Custom Message From AJAX Error Handling with jQuery and MVC 3

An exception on the server-side will invoke the JavaScript AJAX error handling function. This blog will detail two methods to provide custom error handling, overriting the default.

Both methods allow specific error messages to be returned to the client error handling code. This example applies to .NET c# MVC 3 with jQuery and jQuery form plugin. Before quickly scanning this blog for the solution, please note that the second solution detailed below appears to be a better option.
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.NET Web MVC 3 Multiple File upload limit

Multiple File Upload
MVC 3 - Multiple File Upload

There is a default limit on the file size (or total file size in the case of multiple files) of 4MB.

To increase it, add (or modify)

<httpRuntime maxRequestLength=”???” /> in Web.config

where “???” is the number of kilo bytes to permit in any upload.
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