I came across a need to resize a whole bunch of images. So I decided to write a little console application in .NET to do the work for me. With 100’s of images to resize it was worth the effort in creating a little application to do the job for me. CA.Console.ResizeImage.exe is what I came up with the source code is listed in this post

CA.Console.ResizeImage.exe is a command line windows utility that resizes the following supported images "jpeg,gif,bmp,png" in a given directory to a maximum size keeping the aspect ratio. It is possible to configure the source, destination and maximum size of the images via config file or command line switches it also has some default options for click and go solution. You can download the ziped binary and config file CA.Console.ResizeImage.exe.zip (4.69 kb).

In the simplest case, you can just copy CA.Console.ResizeImage.exe into the directory of your images and double click on it. It will then generate new images with the same name into a folder called ResizedImages without any configuration it will resize all images to 500 x 500 adjust height or width accordingly to keep aspect ratio. More...

I find from experience on of the least used features in C# is the Implicit operator. The implicit keyword is used to declare an implicit user-defined type conversion operator. This allows the implicit conversion without being specified by explicit casts in the source code. The best way to show this is by way of an example in returning meaningful Boolean results.

For example returning the result from an authentication function often involves checking the result to see it was successful or not. In the case it was not successful giving an indication as to why it was not successful. E.g. expired, locked out, incorrect password, unknown account etc.  

//Source code from the Code Associate C# code library, Full documentation and latest updates can be found
//@ http://www.codeassociate.com/caapi/
using System;
using System.Collections.Generic;
using System.Text;

namespace CA.Common
{

    public struct BoolResultMessage
    {
        public bool Success;

        public string Message;

        public static implicit operator bool(BoolResultMessage result)
        {
            // this the majic that makes the struct work the the if statement.. ie if(BoolResultMessage) ... 
            return result.Success;
        }
    }
}

You can find examples on how to use this class at http://www.codeassociate.com/caapi/html/T_CA_Common_BoolResultMessage.htm