Uri.IsUnc Property

Definition

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

public:
 property bool IsUnc { bool get(); };
public bool IsUnc { get; }
member this.IsUnc : bool
Public ReadOnly Property IsUnc As Boolean

Property Value

true if the Uri is a UNC path; otherwise, false.

Exceptions

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

Examples

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

Uri^ uriAddress2 = gcnew Uri( "file://server/filename.ext" );
Console::WriteLine( uriAddress2->LocalPath );
Console::WriteLine( "Uri {0} a UNC path", uriAddress2->IsUnc ? (String^)"is" : "is not" );
Console::WriteLine( "Uri {0} a local host", uriAddress2->IsLoopback ? (String^)"is" : "is not" );
Console::WriteLine( "Uri {0} a file", uriAddress2->IsFile ? (String^)"is" : "is not" );
// The example displays the following output:
//    \\server\filename.ext
//    Uri is a UNC path
//    Uri is not a local host
//    Uri is a file
Uri uriAddress2 =  new Uri("file://server/filename.ext");
Console.WriteLine(uriAddress2.LocalPath);
Console.WriteLine("Uri {0} a UNC path", uriAddress2.IsUnc ? "is" : "is not");
Console.WriteLine("Uri {0} a local host", uriAddress2.IsLoopback ? "is" : "is not");
Console.WriteLine("Uri {0} a file", uriAddress2.IsFile ? "is" : "is not");
// The example displays the following output:
//    \\server\filename.ext
//    Uri is a UNC path
//    Uri is not a local host
//    Uri is a file
let uriAddress2 = Uri "file://server/filename.ext"
printfn $"{uriAddress2.LocalPath}"
printfn $"""Uri {if uriAddress2.IsUnc then "is" else "is not"} a UNC path"""
printfn $"""Uri {if uriAddress2.IsLoopback then "is" else "is not"} a local host"""
printfn $"""Uri {if uriAddress2.IsFile then "is" else "is not"} a file"""
// The example displays the following output:
//    \\server\filename.ext
//    Uri is a UNC path
//    Uri is not a local host
//    Uri is a file
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
' The example displays the following output:
'    \\server\filename.ext
'    Uri is a UNC path
'    Uri is not a local host
'    Uri is a file

Remarks

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

Applies to

Ürün Sürümler
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0