Uri.IsUnc 屬性

定義

命名空間:

System

組件:

netstandard.dll, System.Runtime.dll

來源:

Uri.cs

會得到一個值，表示指定的 Uri 路徑是否為通用命名慣例（UNC）路徑。

public:
 property bool IsUnc { bool get(); };

public bool IsUnc { get; }

member this.IsUnc : bool

Public ReadOnly Property IsUnc As Boolean

屬性值

Boolean

true 若 為 Uri UNC 路徑;否則， false。

例外狀況

InvalidOperationException

此實例代表一個相對 URI，且此性質僅適用於絕對 URI。

範例

以下範例建立一個 Uri 實例，並判斷它是否為 UNC 路徑。

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

備註

屬性為 IsUnc ，若指定的Uri實例為 UNC 路徑（例如 \\server\folder、//server 或file://server/foldertrue）。 若 URI 擁有 file:// 方案並指定宿主元件，此特性必然回傳 true 。