Contains Method
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HttpListenerPrefixCollection::Contains Method (String^)


Returns a Boolean value that indicates whether the specified prefix is contained in the collection.

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

virtual bool Contains(
	String^ uriPrefix
) sealed


Type: System::String^

A String that contains the Uniform Resource Identifier (URI) prefix to test.

Return Value

Type: System::Boolean

true if this collection contains the prefix specified by uriPrefix; otherwise, false.

Exception Condition

uriPrefix is null.

The specified prefix must exactly match an existing value.

The following code example checks to see whether a user-specified prefix is contained in the prefix collection of an HttpListener.

public static bool CheckForPrefix(HttpListener listener, string prefix)
    // Get the prefixes that the Web server is listening to.
    HttpListenerPrefixCollection prefixes = listener.Prefixes;
    if (prefixes.Count == 0 || prefix == null)
        return false;
    return prefixes.Contains(prefix);

.NET Framework
Available since 2.0
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