ViewStateException.UserAgent ViewStateException.UserAgent ViewStateException.UserAgent ViewStateException.UserAgent Property

定義

ビューステート例外を発生させた HTTP 要求のブラウザーの種類を取得します。Gets the browser type of the HTTP request that resulted in a view-state exception.

public:
 property System::String ^ UserAgent { System::String ^ get(); };
public string UserAgent { get; }
member this.UserAgent : string
Public ReadOnly Property UserAgent As String

プロパティ値

ユーザー エージェント (通常はブラウザーの種類) を格納している StringA String containing the user agent, which is typically the browser type.

次のコード例は、base64 でエンコードされた文字列を逆シリアル化して返すメソッドを実装する方法を示します、ICollectionプロパティの設定のコレクション。The following code example demonstrates how to implement a method that deserializes a base64-encoded string and returns an ICollection collection of property settings. Deserializeメソッド、HttpException例外を含む、ViewStateException内部例外としてのオブジェクト。The Deserialize method can throw an HttpException exception that contains a ViewStateException object as an inner exception. キャッチする方法の例を示します、HttpException例外からプロパティを取得し、ViewStateExceptionオブジェクト。The example shows how you can catch an HttpException exception and retrieve the properties from the ViewStateException object.

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   

注釈

このプロパティには、同じ値が返されます、HTTP_USER_AGENT変数、ServerVariablesプロパティ。This property returns the same value as the HTTP_USER_AGENT variable in the ServerVariables property.

適用対象