Uri.IsUnc Property

Gets whether the specified Uri is a universal naming convention (UNC) path.

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

'Declaration
Public ReadOnly Property IsUnc As Boolean

Property Value

Type: System.Boolean
A Boolean value that is true if the Uri is a UNC path; otherwise, false.

ExceptionCondition
InvalidOperationException

This instance represents a relative URI, and this property is valid only for absolute URIs.

The IsUnc property is true if the specified Uri instance is a UNC path (such as \\server\folder or file://server/folder). This property always returns true if the URI has the file:// scheme and specifies a host component.

The following example creates a Uri instance and determines whether it is a UNC path.

    Dim uriAddress2 As New Uri("file://server/filename.ext")
    Console.WriteLine(uriAddress2.LocalPath)
    Console.WriteLine("Uri {0} a UNC path", IIf(uriAddress2.IsUnc, "is", "is not")) 'TODO: For performance reasons this should be changed to nested IF statements
    Console.WriteLine("Uri {0} a local host", IIf(uriAddress2.IsLoopback, "is", "is not")) 'TODO: For performance reasons this should be changed to nested IF statements
    Console.WriteLine("Uri {0} a file", IIf(uriAddress2.IsFile, "is", "is not")) 'TODO: For performance reasons this should be changed to nested IF statements

End Sub 'GetParts

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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