#297 – Three Different Ways to Initialize the Contents of a struct

You must assign a value to each field in a struct before using it, but there are several different ways to do this.

The first way is to assign the values directly, after you declare a new struct variable.

            Point3D myPoint;
            myPoint.x = 34.0;
            myPoint.y = 25.0;
            myPoint.z = 36.0;

The second way to assign values to all of the fields is to invoke the parameterless constructor, by using the new operator.  Note that you always get the built-in parameterless constructor–you cannot declare your own parameterless constructor in a custom struct.

This built-in constructor will initialize all fields to their default values.

            Point3D myPoint = new Point3D();

The last way to assign values is to invoke a custom constructor, assuming that your constructor assigns values to the fields.

            Point3D myPoint = new Point3D(10.0, 20.0, 30.0);

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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