What Is Object Reference Not Set to an Instance of an Object?
This infamous and dreaded error alert happens when you get a NullReferenceException.
So, do you know what a null reference is?
A null reference means that it does not point to any object.
Null reference errors are responsible for a good percentage of all system bugs.
How to avoid this error?
How to Avoid Object Reference Not Set to an Instance of an Object?
Now, we will show some of them.
Explicitly check for null and ignore null values.
Explicitly check for null and provide a default value.
Explicitly check for null from method calls and throw a custom exception.
Use Debug.Assert if a value should never be null, to catch the problem earlier than the exception occurs.
Take advantage of the null coalescing operator: ?
[C#] or If() [VB].
Take Advantage of Null Context.
When opening the virtual machines using VirtualBox, you may encounter the VT-x is not available error.
This post shows how to fix this problem.
In addition, this post also shows some measures to avoid this error.
If you have any different ideas, you could share it in the comment zone.
