Question

I am retrieving an image from SQL Server to display on a new page in my ASP.NET 4.0 application using this method (one of my posts):

How to display an image based on SelectedValue in a GridView?

I am then displaying the image in a new window using this method: (one of my posts):

How to display an image in a new window

What I am trying to do is get the height and width of the image so that the new window is created with the same height and width as the stored image. I guess there are two ways of doing this:

1. Create a height and width column in my database and store the values when the image is inserted into the database
2. Retrieve the image from the database and calculate somehow the height and width just before displaying it and then resize the browser window to the right size.

I already have over 150 images in the database so that makes option 1 difficult because I would have to go back over my db and calculate height and width for images that are already in the db. Therefore I would prefer to use option 2, or maybe there’s another option? How would I go about doing this?

Thanks for looking.

Answer 1

Something like:

System.Drawing.Image image = System.Drawing.Image.FromStream( 
    new System.IO.MemoryStream((byte[]) SqlReader["img_data"]) 
);

int width = image.Width;
int height = image.Height;