Inflate Rectangle by Percentage

Question

I know to Inflate the Rectangle by Pixels, How to by Percentage?

Ex: rect.Inflate(45%,105%) the integer value should be passed as percent value not pixel value

How??

Answer 1

One option is to use the SizeF structure to allow for you to calculate the width and height values by percentage values, like this:

SizeF theSize = new SizeF(rect.Width * .45, rect.Height * 1.05);

SizeF holds floating point values, but unfortunately there is no overload for Inflate() that accepts a SizeF, but it does have an overload that accepts a Size structure. So we need to convert a SizeF to a Size, like this:

// Round the Size
Size roundedSize = Size.Round(theSize);

// Truncate the Size
Size truncatedSize = Size.Truncate(theSize);

Finally, we can use our converted Size (either the rounded or truncated), like this:

rect.Inflate(roundedSize);

OR

rect.Inflate(truncatedSize);

Answer 2

There is no function to do this. You will need to calculate the pixels from the percentage and use those instead.