小编nic*_*ane的帖子

我们已经实现了一个对Active Directory进行身份验证的成员资格提供程序,它使用的是System.DirectoryServices.在带有webdev服务器的Visual Studio 2010上的ASP.Net MVC 3应用程序中使用此成员资格提供程序时,我们有时(6次中有1次)在登录应用程序时会出现异常.

System.IO.FileNotFoundException: Could not load file or assembly 'System.Web' or one of its dependencies. The system cannot find the file specified.
File name: 'System.Web' 
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.LoadWithPartialNameInternal(AssemblyName an, Evidence securityEvidence, StackCrawlMark& stackMark)
at System.DirectoryServices.AccountManagement.UnsafeNativeMethods.IADsPathname.Retrieve(Int32 lnFormatType)
at System.DirectoryServices.AccountManagement.ADStoreCtx.LoadDomainInfo()
at System.DirectoryServices.AccountManagement.ADStoreCtx.get_DnsDomainName()
at System.DirectoryServices.AccountManagement.ADStoreCtx.GetGroupsMemberOfAZ(Principal p) …

给出以下json结果:默认的json结果有一组已知的字段:

{
    "id": "7908",
    "name": "product name"
}

但可以用额外的字段(在此示例中被扩展_unknown_field_name_1和_unknown_field_name_2其中的请求结果,当名称不知道).

{
    "id": "7908",
    "name": "product name",
    "_unknown_field_name_1": "some value",
    "_unknown_field_name_2": "some value"
}

我希望将json结果序列化并反序列化为具有已知字段属性的类,并将未知字段(没有属性)映射到属性(或多个属性),如字典,这样它们就可以了访问和修改.

public class Product
{
    public string id { get; set; }
    public string name { get; set; }
    public Dictionary<string, string> fields { get; set; }
}

我想我需要一种方法来插入一个json序列化器并自己为缺失的成员做映射(用于序列化和反序列化).我一直在寻找各种可能性:

• json.net和自定义合约解析器(无法弄清楚如何做)
• datacontract序列化程序(只能覆盖序列化,序列化)
• 序列化为动态并进行自定义映射(这可能有效,但似乎很多工作)
• 让产品继承自DynamicObject(序列化程序使用反射,不调用trygetmember和trysetmember方法)

我正在使用restsharp,但可以插入任何序列化程序.

哦,我无法改变json的结果,这或者这对我也没有帮助.

更新: 看起来更像它:http://geekswithblogs.net/DavidHoerster/archive/2011/07/26/json.net-custom-convertersndasha-quick-tour.aspx

我有以下包装器:

 public interface ITransactionScopeWrapper : IDisposable
{
    void Complete();
}

public class TransactionScopeWrapper : ITransactionScopeWrapper
{
    private readonly TransactionScope _scope;
    private readonly ISession _session;
    private readonly ITransaction _transaction;

    public TransactionScopeWrapper(ISession session)
    {
        _session = session;
        _scope = new TransactionScope(TransactionScopeOption.Required,
                                      new TransactionOptions {IsolationLevel = IsolationLevel.ReadCommitted});
        _transaction = session.BeginTransaction();
    }

    #region ITransactionScopeWrapper Members

    public void Dispose()
    {
        try
        {
            _transaction.Dispose();
        }
        finally
        {
            _scope.Dispose();
        }
    }

    public void Complete()
    {
        _session.Flush();
        _transaction.Commit();
        _scope.Complete();
    }

    #endregion
}

在我的ActionFilter中,我有以下内容:

 public class NhibernateTransactionAttribute : ActionFilterAttribute …

我已经可以将文件另存为.jpeg，但是图像无法加载，有人建议吗？

    Private Sub Btnconfirm_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnconfirm.Click

        MsgBox("A receipt will now be saved to your files", vbOKOnly, "Thank you for your purchase")

        SaveFileDialog1.ShowDialog()
        MsgBox("Thank you for choosing Tiny Theatre, have a nice day.", vbOKOnly, "Thank you")
        Me.Close()
    End Sub

    Private Sub SaveFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SaveFileDialog1.FileOk
        Dim FileToSaveAs As String = SaveFileDialog1.FileName

        Dim objwriter As New System.IO.StreamWriter(FileToSaveAs)
        objwriter.Write(PictureBox1)
        objwriter.Close()
    End Sub