Question

We have two images.

Image tempImage = new Image();
tempImage.width = 500;

Image tempImage2 = new Image();
tempImage2.width = 1000;

I want to compare the widthes of these images and find image with greater width:

I tried following:

if (tempImage.Width < tempImage2.Width) Response.write("width of tempImage2 is bigger");
else Response.write("width of tempImage1 is bigger");

Compiler gets an error: cannot compare these two values.

I tried following:

    Image1.Width = (int)Math.Max(Convert.toDouble(tempImage.Width),Convert.toDouble(tempImage2.Width));
Response.Write("max width is " + Image1.Width);

Compiler couldn’t convert width to double.

So how to compare the width of images and find the image with bigger width?

Answer 1

You’re getting the error because the Width property of an Image is a Unit structure type, not a scalar and there is no comparison operator implemented for it.

if (i.Width.Value < j.Width.Value) 

will work, but that comparison is strictly only valid if the Type of the unit is the same. In your sample, it defaults to pixel, but in a more general case, you’d need to make sure you’re comparing values of the same unit.