An error occurs occasionally when setkeyvalue is returned. What is the problem?

Cause:

1. getbindingdata returns NULL

2. beforedatasave returns false.

3. An error occurred while saving the data to the database.

Solution:

If there are no problems with lines 1 and 2, you need to check the waygolog In the event log to see if any error is reported. If the error message is not displayed, it may be due to the following reasons:

If you are using a WebProgramWhen writing events to Windows events, you may find that the events cannot be written and there are no errors. This is because the account running ASP. NET does not have sufficient permissions to help you create an eventsource. At this time, you need to use this tool http://portal.gz-mstc.com/rd/shared%20documents/createeventsource.rar.

Note: The eventsource creation tool is a command line tool.

(The above content comes from the portal)