Uri.IsUnc Uri.IsUnc Uri.IsUnc Uri.IsUnc Property

定义

获取一个值,该值指示指定的 Uri 是否为统一命名约定 (UNC) 路径。Gets 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

属性值

一个 Boolean 值。如果 true 是 UNC 路径,则该值为 Uri;否则为 falseA Boolean value that is true if the Uri is a UNC path; otherwise, false.

异常

此实例代表一个相对 URI,而此属性仅对绝对 URI 有效。This instance represents a relative URI, and this property is valid only for absolute URIs.

示例

下面的示例创建Uri实例,并确定它是否是 UNC 路径。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
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

注解

IsUnc属性是true如果指定Uri实例是 UNC 路径 (如\\server\folder 或 file://server/folder)。The IsUnc property is true if the specified Uri instance is a UNC path (such as \\server\folder or file://server/folder). 此属性始终返回true如果 URI 具有 file:// 方案和指定的主机组件。This property always returns true if the URI has the file:// scheme and specifies a host component.

适用于