C#

abdelhameed81 wrote:

how to use constructors

public class A 
{
    private string myText;

    public A(string someText)
    {
        this.myText = someText;
    }
 
    public void WriteMyText()
    {
        Console.WriteLine(someText);
    }
}

public class Program
{
    public static void Main()
    {
        A a = new A("Hello World");
        a.WriteMyText();
    }
}

abdelhameed81 wrote:

why do we use them regarding the idea that we can initialize our variables in any section without using constructors.

Colin Angus Mackay wrote:

The CLR will initialise the fields to default values if you don't set them. e.g. an int will be set to 0, a string to "" and so on.

bool blnValidUser = false ;<br />
<br />
bool LoginUser( string strUserName, string Password )<br />
{<br />
  if( username and password match )<br />
  {<br />
    blnValidUser = true ;<br />
    return true ;<br />
  }<br />
  else<br />
  {<br />
    blnValidUser = false ;<br />
    return false ;<br />
  }<br />
}<br />
<br />
void function1()<br />
{<br />
  if( blnValidUser is true )<br />
  {<br />
    Go ahead as planned.<br />
  }<br />
  else<br />
  {<br />
    return ;<br />
  }<br />
}

private string Convert(byte b)
{
	int curVal = 256;
	string temp = "";
	while (curVal > 1)
	{
		curVal /= 2;

		if (b >= curVal)
		{
			temp += "1";
			b -= (byte)curVal;
		}
		else
			temp += "0";
	}
	return temp;
}