'Visual Studio C#: Is there any way to update a VS (Visual Studio) Windows Forms App(.NET Framework) project language from C#7.3 to 9.0 or greater?
I'm currently following some tutorials on the EPPLUS NuGet package for reading and writing to excel files.
The tutorials are using new features such as "Target-Typed Object Creation" unique to the C# language versions 9.0 +.
I only just created by project a couple days ago, so it's using the most up-to-date versioning. However for some reason the project uses C#7.3 and therefore I cannot use some of the new features of 9.0 (obviously).
Some examples of the help I need regarding syntax... All images below are shown for the C#7.3 project
How can I fix the syntax for the red underlined text?
How can I fix the syntax for the red underlined text?
Attempted Fix (not sure if it works since other stuff is still broken
Sources
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Source: Stack Overflow
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