VirtualPathUtility.IsAbsolute(String) 方法

定義

命名空間:

System.Web

組件:

System.Web.dll

傳回布林值，指出所指定的虛擬路徑是否為絕對，亦即，以常值斜線符號 (/) 開頭。

public:
 static bool IsAbsolute(System::String ^ virtualPath);

public static bool IsAbsolute (string virtualPath);

static member IsAbsolute : string -> bool

Public Shared Function IsAbsolute (virtualPath As String) As Boolean

參數

virtualPath

String

要檢查的虛擬路徑。

傳回

Boolean

如果 virtualPath 是絕對路徑並且不是 true 或空字串 ("")，則為 null，否則為 false。

例外狀況

ArgumentNullException

virtualPath 為 null。

範例

下列程式碼範例示範如何使用 IsAbsolute 、 IsAppRelative 和 ToAppRelative 方法。

StringBuilder sb2 = new StringBuilder();
String pathstring1 = Context.Request.CurrentExecutionFilePath.ToString();
sb2.Append("Current Executing File Path = " + pathstring1.ToString() + "<br />");
sb2.Append("Is Absolute = " + VirtualPathUtility.IsAbsolute(pathstring1).ToString() + "<br />");
sb2.Append("Is AppRelative = " + VirtualPathUtility.IsAppRelative(pathstring1).ToString() + "<br />");
sb2.Append("Make AppRelative = " + VirtualPathUtility.ToAppRelative(pathstring1).ToString() + "<br />");
Response.Write(sb2.ToString());

Dim sb2 As New StringBuilder()
Dim pathstring1 As String = Context.Request.CurrentExecutionFilePath.ToString()
sb2.Append("Current Executing File Path = " & pathstring1.ToString() & "<br />")
sb2.Append("Is Absolute = " & VirtualPathUtility.IsAbsolute(pathstring1).ToString() & "<br />")
sb2.Append("Is AppRelative = " & VirtualPathUtility.IsAppRelative(pathstring1).ToString() & "<br />")
sb2.Append("Make AppRelative = " & VirtualPathUtility.ToAppRelative(pathstring1).ToString() & "<br />")
Response.Write(sb2.ToString())

備註

如果虛擬路徑是以 / (/) 的常值斜線標記開頭，則為絕對路徑。 例如，屬性會 Path 傳回絕對虛擬路徑。

另請參閱

• Path
• IsAppRelative(String)