Recently, Asp.net encountered a "runtime error" solution.

Runtime error

Note:An application error occurs on the server. The current custom error settings of this application Disable remote viewing of detailed information about application errors (for security reasons ). However, you can view it in a browser running on the local server computer.

Details:To enable others to view detailed information about this specific error message on a remote computer, go to the "Web. create a <mermerrors> tag in the config file. Set the "Mode" attribute marked by <customerrors> to "off ".
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The program is sent to the server for running.

But I checked the program many times. That's absolutely true!

Solution:
After reading the HTML document of aspx, I found that there are two controls that are not available in this project. After deleting the reference of the above control, I will comment out the following control call statement. Note that it cannot be used. <! --> Annotation, which must be <% -- %> for validity!