System.Security.SecurityException请求类型为'；Microsoft.SharePoint.Security.SharePointPermission

我创建了一个启用浏览器的表单，它有两个字段。我想使用SharePoint对象模型

我已将SharePoint dll添加到项目中，还包括使用Microsoft.SharePoint语句

   using Microsoft.Office.InfoPath;
using System;
using System.Xml;
using System.Xml.XPath;
using Microsoft.SharePoint;

namespace test1
{
    public partial class FormCode
    {

    public void InternalStartup()
    {
        ((ButtonEvent)EventManager.ControlEvents["CTRL2_5"]).Clicked += new ClickedEventHandler(CTRL2_5_Clicked);
    }

    public void CTRL2_5_Clicked(object sender, ClickedEventArgs e)

    {
        string url = "http://site";
        using (SPSite site = new SPSite(url))
        {

            using (SPWeb web = site.OpenWeb())
            {
                XPathNavigator nav = MainDataSource.CreateNavigator();
                nav.SelectSingleNode("/my:myFields/my:field1", NamespaceManager).SetValue(web.Title.to nav.SelectSingleNode("/my:myFields/my:field2",NamespaceManager).Value.ToString());
            }
        }
        // Write your code here.
    }
}

} `

当我点击按钮时，我得到以下错误

System.Security.SecurityException
Request for the permission of type 'Microsoft.SharePoint.Security.SharePointPermission, Microsoft.SharePoint.Security, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' failed.
   at test1.FormCode.CTRL2_5_Clicked(Object sender, ClickedEventArgs e)
   at Microsoft.Office.InfoPath.Internal.ButtonEventHost.OnButtonClick(DocActionEvent pEvent)
   at Microsoft.Office.Interop.InfoPath.SemiTrust._ButtonEventSink_SinkHelper.OnClick(DocActionEvent pEvent)

在表单选项->安全和信任->完全信任下

Please can anyone suggest if  I need to do anything else.

---

我在代码中也面临同样的问题。我已经做了以下工作，问题已经解决。请尝试下面的，让我知道它是否解决了这个问题

文件>信息>设计检查器>打开“设计检查器”窗口。在该对话框中，单击更改设置>安全和信任>选择完全信任选项