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HttpCapabilitiesBase.RequiresControlStateInSession Proprietà

  • Riferimento

Definizione

Spazio dei nomi:
System.Web.Configuration
Assembly:
System.Web.dll

Ottiene un valore che indica se il browser richiede la conservazione dello stato dei controlli nelle sessioni.

public:
 property bool RequiresControlStateInSession { bool get(); };
public bool RequiresControlStateInSession { get; }
member this.RequiresControlStateInSession : bool
Public ReadOnly Property RequiresControlStateInSession As Boolean

Valore della proprietà

Boolean

true se il browser richiede che lo stato del controllo venga mantenuto nelle sessioni. In caso contrario, false. Il valore predefinito è false.

Esempio

Nell'esempio di codice seguente viene illustrato come determinare se il browser richiede che lo stato di controllo venga mantenuto nelle sessioni.

<%@ page language="C#"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    void Page_Load(Object Sender, EventArgs e)
    {
        CheckBrowserCaps();
    }

    void CheckBrowserCaps()
    {
        String labelText = "";
        System.Web.HttpBrowserCapabilities myBrowserCaps = Request.Browser;
        if (((System.Web.Configuration.HttpCapabilitiesBase)myBrowserCaps).RequiresControlStateInSession)
        {
            labelText = "Browser requires control state to be maintained in sessions.";
        }
        else
        {
            labelText = "Browser does not require control state to be maintained in sessions.";
        }

        Label1.Text = labelText;
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Browser Capabilities Sample</title>
</head>
<body>
    <form runat="server" id="form1">
        <div>
            Browser Capabilities:
            <p/><asp:Label ID="Label1" Runat="server" />
        </div>
    </form>
</body>
</html>

<%@ page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        CheckBrowserCaps()
    End Sub

    Function CheckBrowserCaps()

        Dim labelText As String = ""
        Dim myBrowserCaps As System.Web.HttpBrowserCapabilities = Request.Browser
        If (CType(myBrowserCaps, System.Web.Configuration.HttpCapabilitiesBase)).RequiresControlStateInSession Then
            labelText = "Browser requires control state to be maintained in sessions."
        Else
            labelText = "Browser does not require control state to be maintained in sessions."
        End If

        Label1.Text = labelText

    End Function 'CheckBrowserCaps
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Browser Capabilities Sample</title>
</head>
<body>
    <form runat="server" id="form1">
        <div>
            Browser Capabilities:
            <p/><asp:Label ID="Label1" Runat="server" />
        </div>
    </form>
</body>
</html>

Si applica a