98-361 · Question #379
You are writing code for a new method named Process: void Draw(object o) { } The code receives a parameter of type object. You need to cast this object into the type Polygon. At times, the value of…
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Question
You are writing code for a new method named Process:
void Draw(object o) { } The code receives a parameter of type object. You need to cast this object into the type Polygon. At times, the value of o that is passed to the method might not be a valid Polygon value. You need to make sure that the code does not generate any System. InvalidCastException errors while doing the conversions. Which of the following lines of code should you use inside the Draw method to accomplish this goal?
Options
- APolygon p = (Polygon) o;
- BPolygon p = o is Polygon;
- CPolygon p = o as Polygon;
- DPolygon p = (o != null) ? o as Polygon : (Polygon) o;
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