Solution: "scriptmanager" is not a known element. The possible cause is that the website has a compilation error.
Source: Internet
Author: User
Reprinted, please keep this information: view the original address. After installing the micro Ajax plug-in, drag the scriptmanager and updatepanel controls into the page, "scriptmanager" is not a known element. The possible cause is that the website has a compilation error. Error prompt, but it can still be generated successfully. This problem has puzzled me for a long time. Finally, I found a solution on Google today.
Because I use a motherboard page, you only need to add the following to the HTML code page of the motherboard page: <% @ Assembly name = "system. web. extensions "%>: add the Ajax compilation information to the page. If you do not use the dashboard page, I think you should add this code on the code page to solve the problem.
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