Microsoft Windows NT 4.0 Guide Uživatelský manuál stáhnout pdf (Strana 139)

Microsoft

Windows Server

™

2003 White Paper

Windows NT 4.0 Server Upgrade Guide 134

Figure 58. Side-by-side execution of two versions of the runtime

The .NET Framework consists of the common language runtime and about two dozen assemblies

that contain the API types. The runtime and the .NET Framework assemblies are versioned

separately. For example, version 1.0 of the runtime is actually version 1.0.3705.0, while version

1.0 of the .NET Framework assemblies is version 1.0.3300.0.

The following illustration shows several applications using two different versions of a component

on the same computer. Application A and B use version 1.0 of the component while Application C

uses version 2.0 of the same component.

Figure 59. Side-by-side execution of two versions of a component

Benefits of Side-by-Side Execution

Prior to Windows XP and the .NET Framework, DLL conflicts occurred because applications were

unable to distinguish between incompatible versions of the same code. Type information

contained in a DLL was bound only to a file name. An application had no way of knowing if the

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Microsoft Windows NT 4.0 Guide Uživatelský manuál Strana 139