static void Main(string[] args)
{
#region Process : Start and Stop
Process.Start("Notepad.exe");
//Process.Start(@"C:\");
//Note You can find a process name from task manager
//Process.Start("chrome.exe");
//Process.Start("https://www.redit.com");
Process[] notepads = Process.GetProcessesByName("notepad");//closes all notepads
foreach (var process in notepads)
{
process.Kill();
}
#endregion
#region Multidimensional Array
string[,] Array2D = new string[3, 2];
Array2D[0, 0] = "Item 00";
Array2D[0, 1] = "Item 01";
Array2D[1, 0] = "Item 10";
Array2D[1, 1] = "Item 11";
Array2D[2, 0] = "Item 20";
Array2D[2, 1] = "Item 21";
for (int i = 0; i < 3; i++)
{
Console.WriteLine("Array Row " + i);
for (int j = 0; j < 2; j++)
{
Console.WriteLine("Array Col " + j);
Console.WriteLine("ARRAY: " + Array2D[i, j]);
}
}
#endregion
#region Jagged Array
//array of an array
int[][] jaggedArrayOne = new int[3][];
jaggedArrayOne[0] = new int[5] {
0, 1, 2, 3, 4
};
jaggedArrayOne[1] = new int[2] {
6, 7
};
jaggedArrayOne[2] = new int[3] {
9, 8, 5
};
int[][] jaggedArrayTwo =
{
new int[] { 0, 1, 2, 3 },
new int[] { 10, 11, 12, 13 },
new int[] { 20, 21, 22, 23 },
new int[] { 30, 31, 32, 33 },
};
Console.WriteLine("jaggedArrayTwo[1][4] : " + jaggedArrayTwo[1][3]);
for (int i = 0; i < jaggedArrayTwo.Length; i++)
{
Console.WriteLine("accesing " + i);
for (int j = 0; j < jaggedArrayTwo[i].Length; j++)
{
Console.WriteLine("accesing " + j);
Console.WriteLine($"jaggedArrayTwo[{i}][{j}] : {jaggedArrayTwo[i][j]}");
}
}
Console.WriteLine();
#endregion
#region Static Directives
Console.WriteLine(Math.Round(2.5465, 2));
WriteLine(Math.Round(2.5465, 2)); //using static System.Console;
#endregion
#region IsNullEmpty
string naam = " ";
//if(naam.Trim()=="" || naam is null)
//{
// Console.WriteLine("EMPTY");
//}
//else
//{
// Console.WriteLine("NOT EMPTY");
//}
if (string.IsNullOrEmpty(naam) || string.IsNullOrWhiteSpace(naam))
{
Console.WriteLine("EMPTY");
}
else
{
Console.WriteLine("NOT EMPTY");
}
#endregion
#region Destructors
Animals dog = new Animals();
var name = Console.ReadLine();
#endregion
#region Assembly
Assembly assemObject = Assembly.GetEntryAssembly();
AssemblyName assemName = assemObject.GetName();
Console.WriteLine(assemName.FullName);
Console.WriteLine(assemName.CultureName);
CultureInfo cultureInfo = new CultureInfo("en-GB");
assemName.CultureInfo = cultureInfo;
Console.WriteLine(assemName.CultureInfo.DisplayName);
Console.WriteLine(assemName.CultureInfo.NativeName);
Console.WriteLine(assemName.CultureInfo.NumberFormat.CurrencySymbol);
Console.WriteLine(assemName.CultureInfo.Calendar);
Console.WriteLine(assemName.Version);
assemName.Version = new Version(2, 0, 0, 0);
Console.WriteLine(assemName.Version);
#endregion
#region Attributes : Default
Persons.SayHi();
Persons.SayHello();
Persons.DisplayMessage("We are in the debugging mode");
#endregion
#region Attributes : Custom
//reflection
MemberInfo info = typeof(People);
object[] attributes = info.GetCustomAttributes(true);
for (int i = 0; i < attributes.Length; i++)
{
Console.WriteLine(attributes[i]);
}
#endregion
#region GUID
Guid guid = Guid.NewGuid();
Console.WriteLine(guid);
guid = Guid.NewGuid();
Console.WriteLine(guid);
#endregion
#region StringBuilder
StringBuilder builder = new StringBuilder(10, 50);
builder.Append("John welcome back");
Console.WriteLine(builder);
builder.Insert(0, "Hello ");
Console.WriteLine(builder);
builder.Remove(18, 5);
Console.WriteLine(builder);
builder.Replace('o', '0');
Console.WriteLine(builder);
builder.Replace('e', '1', 0, 15);
string text = builder.ToString();
Console.WriteLine(text);
#endregion
#region Pattern Matching : Main
Dog max = new Dog();
max.DogName = "Max";
Lion simba = new Lion();
Snake solidSnake = new Snake();
Lizard liz = new Lizard();
AnimalSoundWithSwitchAndWhen(max);
//AnimalSoundWithSwitch(simba);
//AnimalSoundWithSwitch(solidSnake);
//AnimalSoundWithSwitch(liz);
#endregion
#region Pass by ref
//passing by value (using a copy)
//passing by reference (using the variable itself)
int X1 = 3;
ref int X2 = ref X1;//same int regardless of which one is changed (ref local)
