(Learning) Dev displays the Red Cross in some components on the design interface and reports an error

Source: Internet
Author: User

Background: In vs2010 development environment,ProgramAppears for no reasonDev componentThe Red Cross is displayed on the design page and an error is reported.
Process: After Li Gong's bold assumptions and careful arguments, he finally concluded that "it was due to the installationMicrosoft Silverlight 5.1.20125.0"Caused by installing program patches ".
Solution: after the program is uninstalled in the "delete program,DevThe component is available again.
Li Gong proudly told everyone: "This problem has been tested !"

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