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Use LINQ GroupBy to count how many times each value appears in an integer array.
private Dictionary<int, int> GetArrayDuplicates(int[] arrayToSearch)
{
Dictionary<int, int> counts = arrayToSearch.GroupBy(arrayItem => arrayItem)
.ToDictionary(groupedItem => groupedItem.Key,
groupedItem => groupedItem.Count());
return counts;Add a custom menu item to the Site Actions menu in WSS 3.0 using a feature, then deploy it with stsadm.
How to declare abstract classes and abstract members in C#, and how a derived class overrides them.
abstract class Stream
{
public abstract void Write(char ch);
public void WriteString(string s)
{
foreach (char ch in s) Write(ch);The syntax of class inheritance in C# and the main rules to remember.
class A
{
int aVariable;
public A()
{
}