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 C#data type

e refers to power to 10

for example

5.75D2f -> f refers to float 

here it means 5.75 *100=575

C# type conversion

Console.WriteLine(myInt.ToString());

Console.WriteLine(myInt.ToInt());

Console.WriteLine(myInt.Double);

Console.WriteLine(myInt.ToString());

      

Console.WriteLine(Convert.ToInt32(myDouble));

Console.WriteLine(Convert.ToString(myInt));    // Convert int to string

Console.WriteLine(Convert.ToDouble(myInt)); 

C# String

txt.Length;

txt.ToUpper();

Txt.Lower();

String.Concat(firstName, LastName);

string Interpolation

string firstName=rajan;

string lastName=khadka;

string name=$"My full name is: {firstName} and Last name is:{lastName}";

Access String

string s = "Hello";

Console.WriteLine(s.[0]);

This prints H

s.IndexOf("e"); gives index number

Substring cuts the string from one point to another

string another="Rajan Khadka";

Console.WriteLine(another.Substring(0,another.IndexOf("K")));

      Console.WriteLine(another.Substring(another.IndexOf("K")));

       Console.WriteLine(another.Substring(another.IndexOf("K"),4));

to use c# inbuild code as real string in c# 

we need to specify \

\' ' Single quote

\" " Double quote

\\ \ Backslash