#generic-list

How to: How to add item to the beginning of List?

How to add item to the beginning of List<T>?

I want to add a “Select One” option to a drop down list bound to a List<T>.

Once I query for the List<T>, how do I add my initial Item, not part of the data source, as the FIRST element in that List<T> ? I have:

// populate ti from data List ti = MyTypeItem.GetTypeItems(); //create initial entry MyTypeItem initialItem = new MyTypeItem();…

Fixed Randomize a List in C# #dev #it #asnwer

Randomize a List<T> in C#

What is the best way to randomize the order of a generic list in C#? I’ve got a finite set of 75 numbers in a list I would like to assign a random order to, in order to draw them for a lottery type application.

Answer: Randomize a List<T> in C#

Here’s an efficient Shuffler that returns a byte array of shuffled values. It never shuffles more than is needed. It can be…

How to: Remove duplicates in the list using linq

Remove duplicates in the list using linq

I have a class Items with properties (Id, Name, Code, Price).

The List of Items is populated with duplicated items.

For ex.:

1 Item1 IT00001 $100 2 Item2 IT00002 $200 3 Item3 IT00003 $150 1 Item1 IT00001 $100 3 Item3 IT00003 $150

How to remove the duplicates in the list using linq?

Answer: Remove duplicates in the list using linq

var distinctItems =…

How to: Randomize a List in C#

Randomize a List<T> in C#

What is the best way to randomize the order of a generic list in C#? I’ve got a finite set of 75 numbers in a list I would like to assign a random order to, in order to draw them for a lottery type application.

Answer: Randomize a List<T> in C#

If you have a fixed number (75), you could create an array with 75 elements, then enumerate your list, moving the elements to…