Opening a “known file type” into running instance of custom app - .NET

Question

How would you open a file (that has a known file/app association in the registry) into a \"running instance\" of the application it\'s supposed to open in? An example would

Answer 1

Looks like what you are looking for is creating a single instance application. This can be done in C# by using WindowsFormsApplicationBase located in Microsoft.VisualBasic.dll

For details, take a look at: http://www.hanselman.com/blog/TheWeeklySourceCode31SingleInstanceWinFormsAndMicrosoftVisualBasicdll.aspx or search for WindowsFormsApplicationBase