About enum in C #

Enum is an enumeration type. It is the same as struct, int, single, and double. It belongs to the value type and is stored in the stack. It does not need to allocate internal space when it is created, so it is good for program performance.

Why should we introduce enum? One reason is to make the program safer and more flexible.

What should I do? When we have determined the number of changes, we can enumerate the changes one by using enum.

For example, there is a chart that can be displayed in three types: line, bar, and pie. You can specify the display method as needed, in this case, we can use variables for control, or use more secure enumeration types for control.

Namespace Constants
{
Public class SystemConstant
{
Public Constants. Webinfo ChartTypes {get; set ;}
Public string Result;
Public string Create ()
{
ChartTypes = Constants. Webinfo. Pie;
Switch (ChartTypes)
{
Case Constants. Webinfo. Bar:
Result = "bar ";

// Code statement

//.......

//........
Break;
Case Constants. Webinfo. Line:
Result = "line ";
Break;
Case Constants. Webinfo. Pie:
Result = "pie ";
Break;
}
Return Result;
}
}
Public enum Webinfo
{
Pie, Bar, Line
}
}

See it. The red part is my enum. In the call, use Constants. webinfo. bar, Constants. webinfo. line, or Constants. webinfo. pie is called. The type is safer and no error characters are written.