Ghazi Sarhan's Blog - Finding the current trust level in ASP.NET

Saturday, December 22, 2007

Finding the current trust level in ASP.NET

I found a great post on dmitryr's blog on how to find the current trust level for your ASP.NET application, it is practical if you are hosting your site on a hosting company as the hosting company can set the trust level for your application in their machine.config file, and set it un-overridable.

Here is how to check the trust level:

Create an aspx page and place a Label:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CheckTrustLevel.aspx.cs" Inherits="CheckTrustLevel" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Untitled Page</title>

</head>

<body>

<div>

<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

</div>

</form>

</body>

</html>

In code behind...

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class CheckTrustLevel : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

Label1.Text = GetCurrentTrustLevel().ToString();

}

AspNetHostingPermissionLevel GetCurrentTrustLevel()

{

foreach (AspNetHostingPermissionLevel trustLevel in

new AspNetHostingPermissionLevel[] {

AspNetHostingPermissionLevel.Unrestricted,

AspNetHostingPermissionLevel.High,

AspNetHostingPermissionLevel.Medium,

AspNetHostingPermissionLevel.Low,

AspNetHostingPermissionLevel.Minimal

})

{

try

{

new AspNetHostingPermission(trustLevel).Demand();

}

catch (System.Security.SecurityException)

{

continue;

}

return trustLevel;

}

return AspNetHostingPermissionLevel.None;

}

Run the page and it will tell you what trust level your application has.

Saturday, December 22, 2007 4:07:36 AM UTC

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