ViewStateException.Path 屬性

定義

命名空間:

System.Web.UI

組件:

System.Web.dll

取得導致視圖狀態異常的 HTTP 請求路徑。

public:
 property System::String ^ Path { System::String ^ get(); };

public string Path { get; }

member this.Path : string

Public ReadOnly Property Path As String

屬性值

String

String A 包含請求路徑。

範例

以下程式碼範例示範如何實作一種方法，將 base64 編碼的字串反序列化，並回傳 ICollection 一組屬性設定。 該 Deserialize 方法可以拋出 HttpException 包含物件 ViewStateException 作為內部例外的例外。 範例展示了如何捕捉 HttpException 例外並從 ViewStateException 物件中取得屬性。

private ICollection LoadControlProperties(string serializedProperties)
{

    ICollection controlProperties = null;

    // Create an ObjectStateFormatter to deserialize the properties.
    ObjectStateFormatter formatter = new ObjectStateFormatter();

    try
    {
        // Call the Deserialize method.
        controlProperties = (ArrayList)formatter.Deserialize(serializedProperties);
    }
    catch (HttpException e)
    {
        ViewStateException vse = (ViewStateException)e.InnerException;
        String logMessage;

        logMessage = "ViewStateException. Path: " + vse.Path + Environment.NewLine;
        logMessage += "PersistedState: " + vse.PersistedState + Environment.NewLine;
        logMessage += "Referer: " + vse.Referer + Environment.NewLine;
        logMessage += "UserAgent: " + vse.UserAgent + Environment.NewLine;

        LogEvent(logMessage);

        if (vse.IsConnected)
        {
            HttpContext.Current.Response.Redirect("ErrorPage.aspx");
        }
        else
        {
            throw e;
        }
    }
    return controlProperties;
}

Private Function LoadControlProperties(ByVal serializedProperties As String) As ICollection

    Dim controlProperties As ICollection = Nothing

    ' Create an ObjectStateFormatter to deserialize the properties.
    Dim formatter As New ObjectStateFormatter()

    Try
        ' Call the Deserialize method.
        controlProperties = CType(formatter.Deserialize(serializedProperties), ArrayList)
    Catch e As HttpException
        Dim vse As ViewStateException
        Dim logMessage As String

        vse = e.InnerException

        logMessage = "ViewStateException. Path: " + vse.Path + Environment.NewLine
        logMessage += "PersistedState: " + vse.PersistedState + Environment.NewLine
        logMessage += "Referer: " + vse.Referer + Environment.NewLine
        logMessage += "UserAgent: " + vse.UserAgent + Environment.NewLine

        LogEvent(logMessage)

        If (vse.IsConnected) Then
            HttpContext.Current.Response.Redirect("ErrorPage.aspx")
        Else
            Throw e
        End If
    End Try
    Return controlProperties
End Function 'LoadControlProperties

備註

此屬性回傳與 PATH_INFO 屬性中的 ServerVariables 變數值相同。 它會回傳主機名稱後的路徑部分。 例如，在網址 http://www.contoso.com/virdir/page.html中，會 Path 回傳 /virdir/page.html。