Windows apps
Collapse the table of content
Expand the table of content
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

String::Inequality Operator (String^, String^)


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Determines whether two specified strings have different values.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

static bool operator !=(
	String^ a,
	String^ b


Type: System::String^

The first string to compare, or null.

Type: System::String^

The second string to compare, or null.

Return Value

Type: System::Boolean

true if the value of a is different from the value of b; otherwise, false.

The Inequality method defines the operation of the inequality operator for the String class. It enables code such as that shown in the Examples section.

The Inequality operator in turn calls the static Equals(String^, String^) method, which performs an ordinal (case-sensitive and culture-insensitive) comparison.


   The Visual Basic compiler does not resolve the inequality operator as a call to the Inequality method. Instead, the inequality operator wraps a call to the Operators::CompareString method.

The following example demonstrates the inequality operator.

// Example for the String Inequality operator.
using namespace System;
void CompareAndDisplay( String^ Comparand )
   String^ Lower = "abcd";
   Console::WriteLine( "\"{0}\" != \"{1}\" ?  {2}", Lower, Comparand, Lower != Comparand );

int main()
   Console::WriteLine( "This example of the String Inequality operator\n"
   "generates the following output.\n" );
   CompareAndDisplay( "ijkl" );
   CompareAndDisplay( "ABCD" );
   CompareAndDisplay( "abcd" );

This example of the String Inequality operator
generates the following output.

"abcd" != "ijkl" ?  True
"abcd" != "ABCD" ?  True
"abcd" != "abcd" ?  False

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
© 2018 Microsoft