“无源可用” - Visual Studio调试（即使加载符号） [英] "No Source Available" - Visual Studio Debugging (even when symbols have loaded)

问题描述

我已经设置了 Visual Studio  2012 专业版来下载调试符号。它正确设置，符号已经下载。

I have set up Visual Studio 2012 Professional to download debug symbols. It is set up correctly and the symbols have downloaded.

我得到了我希望介绍的代码行：

I get to the line of code I wish to step into:

bool result = Membership.ValidateUser("user", "password");

我右键单击并选择步入特定 - >成员资格.ValidateUser（）

然后在Visual Studio中打开一个标签：

Then a tab opens in Visual Studio saying:

无可用资源 - 目前没有可用的源代码

No Source Available - There is no source code available for the current location

Membership.ValidateUser（）位于 System.Web.Security 命名空间，它位于 System.Web.dll 。如果我打开了模块窗口，我可以清楚地看到这个程序集的符号已经下载。

Membership.ValidateUser() is in the System.Web.Security namespace which is in the System.Web.dll. If I open up the Modules window I can clearly see that the symbols for this assembly have been downloaded.

如果符号在那里，为什么我不能进入源代码？

If the symbols are there, why am I not able to step into the source code?

推荐答案

源代码步进仅适用于RTM或SP版本。请参阅 PDB文件.NET Framework 3.5 SP1不可用！ （即System.Web.pdb 2.0.50727.4016） 。

Source stepping is only available for RTM or SP releases. See PDB files for .NET Framework 3.5 SP1 not available! (i.e. System.Web.pdb 2.0.50727.4016).

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