If you have problem in displaying CalendarExtender
when it appears like this:
You could solve problem by right-clicking on your project and then selecting Manage NuGet packages. Then follow this picture bellow
If you have problem in displaying CalendarExtender
when it appears like this:
You could solve problem by right-clicking on your project and then selecting Manage NuGet packages. Then follow this picture bellow
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You could solve problem by right-clicking on your project and then selecting

Manage NuGet packages
. Then follow this picture bellowFollow this picture below.