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Asp Net Cannot Serialize Member System Componentmodel Component Site

The System.Runtime.Serialization.Formatters.Soap.SoapFormatter does not guarantee that objects serialized under one .NET Framework version will successfully deserialize under a different version. Specifically, some ordered collections (like System.Collections.Hashtable) added members between 4.0 and 4.5 such that objects of these types cannot deserialize with .NET Framework 4.0 if they were serialized with .NET Framework 4.5. Note that if the serialized data is both serialized and deserialized with the same .NET Framework version, no issue will occur.

Asp Net Cannot Serialize Member System Componentmodel Component Site

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The second property, VSDesigned, is needed to deserialize the PropertyData string. The string cannot contain object references (like this.Label1), so we serialize the name of the controls. In the deserialization process we need to know the top-level (Page or UserControl) object to turn the names into control references again. As a component has no direct access to its owner at run-time, we need an extra property to achieve that.

COM and ActiveX components are run as native code on the user's machine, with no sandboxing. There are therefore few restrictions on what the code can do. The prior practice of embedding ActiveX components on web pages with Internet Explorer did therefore lead to problems with malware infections. Microsoft recognized the problem with ActiveX as far back as 1996 when Charles Fitzgerald said, "We never made the claim up front that ActiveX is intrinsically secure".[9] Recent[when?] versions of Internet Explorer prompt the user before installing ActiveX controls, enabling the user to disallow installation of controls from sites that the user does not trust. The ActiveX controls are signed with digital signatures to guarantee their authenticity. It is also possible to disable ActiveX controls altogether, or to allow only a selected few. The transparent support for out-of-process COM servers still promotes software safety in terms of process isolation. This can be useful for decoupling subsystems of large application into separate processes. Process isolation limits state corruption in one process from negatively affecting the integrity of the other processes, since they only communicate through strictly defined interfaces. Thus, only the affected subsystem needs to be restarted in order to regain valid state. This is not the case for subsystems within the same process, where a rogue pointer in one subsystem can randomly corrupt other subsystems.

Registration-Free COM (RegFree COM) is a technology introduced with Windows XP that allows Component Object Model (COM) components to store activation metadata and CLSID (Class ID) for the component without using the registry. Instead, the metadata and CLSIDs of the classes implemented in the component are declared in an assembly manifest (described using XML), stored either as a resource in the executable or as a separate file installed with the component.[15] This allows multiple versions of the same component to be installed in different directories, described by their own manifests, as well as XCOPY deployment.[16] This technique has limited support for EXE COM servers[17] and cannot be used for system-wide components such as MDAC, MSXML, DirectX or Internet Explorer.


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