null check syntax c#
//Check if an object is null before calling a function using the ? operator.
//The ? operator is syntactic suger for the if block below:
//Using the ? operator
myObject?.MyFunc();
//Using an if block.
if (myObject != null)
{
myObject.MyFunc();
}c# check if int is null
// When trying to check if your int is null or i.e. 'not set',
// you will get the following error:
// The result of the expression is always 'false'
// since a value of type 'int' is never equal to 'null' of type 'int?'
// You can however bypass this by converting your int to string:
int myInt = null;
// This Method will return a bool;
bool isNullInt = string.IsNullOrEmpty(myInt.ToString());
// isNullInt will be in this case truec# null check
public static int CountNumberOfSInName(string name)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
return name.Count(c => char.ToLower(c).Equals('s'));
}c# null check
if (name is null)
{
throw new ArgumentNullException(nameof(name));
}Copyright © 2021 Codeinu
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