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From Wiki

This is a collection of hacks and good to know things about .Net. Things of which you think "if only I had known that".

Since this a desktopdeveloper category I will concetrate on Windows forms and later perhaps WPF. Add to this list if you like

We will split them up in categories.

Contents [Hide] 1 General 2 Strings 3 Dates 4 ADO.NET 5 Forms 6 Controls 7 linq 8 xlinq 9 Reflection 10 Patterns 11 Network 12 Printing 13 Numbers to Words 14 Mail 15 File handling

General

  * Aliassing a namespace
  * Memory usage for all processes
  * Get the commandline parameters
  * Get the computername
  * Getting text from the clipboard
  * Saving text on the clipboard
  * Getting the freespace on a drive
  * Getting memoryusage of one process
  * Get the total space used by a drive
  * Path to UNC
  * Impersonating an administrator
  * Programaticaly changing the Ignore addresses in the proxy settings

Strings

  * Use StringBuilder to concatenate strings

Dates

  * Add day, month, year to date
  * Add time to a date (hours, minutes, seconds)
  * Substract Time from a date (hours, minutes, seconds)
  * Substract from a date (days, months, years)
  * What day of the week is a certain date
  * Is this year a leapyear?
  * Difference in days between 2 dates

ADO.NET

  * Use commandparameters instead of string concatenation

Forms

  * Opening a form on a specified monitor
  * Show a form in a form
  * Open a form as modal
  * Open a form
  * MDI
  * Hide a form on closing

Controls

  * Use TextBox.AppendText instead of concatenating strings

linq

  * Using Linq to Order directories by creation datetime

xlinq

  * Xlinq : get an elements value with VB.Net
  * Xlinq: write to an element using VB.Net

Reflection

  * Getting a property using reflection part 1
  * Getting a property using reflection part 2
  * Getting a property using reflection part 3
  * Getting a property using reflection part 4
  * Create an instance of class from a string using reflection
  * Set a readonly property via reflection
  * Setting a private field using reflection
  * Getting a private field using reflection

Patterns

  * Use Singletonprovider instead of the Singleton pattern
  * Invoke Singletonprovider giving a string as classname

Network

  * See if the network is available
  * Pinging another computer
  * Getting the current computer's IP-Address
  * Determining if an IPAddress is IPv4 or IPv6
  * Creating an IPv6 address the correct way
  * How to create an IPv4 address the correct way

Printing

  * Selecting a printer

Numbers to Words

  * Numbers to French words
  * Numbers to Dutch words

Mail

 * Sending a mail with attachements

File handling

 * Checking if a file exists
 * Deleting a file
 * Checking if a directory exists
 * Deleting a directory
 * Get all the files from a certain directory
 * Get all the files with a certain extension from a directory
 * Getting a file's extension from a string
 * Getting a file's filename from a string
 * Getting a file's filename from a string without the extension
 * Combining two strings to make a path