IsNull extension method for C# and VB.NET

February 19, 2015

You can use the IsNull Extension method by using the snippet below.

Sample C#

public static bool IsNull(this object source)
{
     return source == null;
}

<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsNull(source As Object) As Boolean
	Return source Is Nothing
End Function

As always, this extension method has been added to the Github Fesslersoft.Extensions Repository

June 21, 2014

This snippet will give you the IsNullOrEmpty function for PHP.

function IsNullOrEmpty($input){
    return (!isset($input) || trim($input)==='');
}

June 19, 2014

This snippet will give you the IsEmpty function for Javascript.

String.prototype.IsEmpty = function(text) {
	return this.valueOf() || text || "";
};

June 16, 2014

IsNull extension method for C# and VB.NET.
Simple but very usefull!

public static bool IsNull(this object input)
{
    return input== null;
}

<System.Runtime.CompilerServices.Extension> _
Public Shared Function IsNull(input As Object) As Boolean
	Return input Is Nothing
End Function

if (!myObject.IsNull())
{
	// do something
}