C# Image Manipulation
Hello all!
I'll be short with my question.
I have an absolute path to a .png image.
I want to pre-load it as a Bitmap object.
This gives an error:
Saying that the parameter is not valid (no other details have been given)Code:Bitmap loaded = new Bitmap(@absolute_path_string);
Now I read something from the .NET resource about PngBitmapDecoder
but I cannot find the System.Windows.Media.Imaging reference & namespace.
So I'm wondering, what would be the correct way of doing this?
It should work correctly with PNG. Have you tried changing the .NET compiling version? I believe the earlier ones may not have supported PNG as a file type.
The path should also be (just to make sure):
Code:Bitmap myBitmap = new Bitmap(@"C:\Test.PNG");
He who asks is a fool for five minutes, but he who does not ask remains a fool forever.
The fool wonders, the wise man asks. - Benjamin Disraeli
There are no foolish questions and no man becomes a fool until he has stopped asking questions. Charles Steinmetz
I'm using .NET version 4.*
and yes the absolute path looks like so:
"C:\\*long path string*\\something.png"
It doesn't work for some reason though (as I have written: invalid parameter)
Your first example of the absolute path was, I think, wrong. You don't use @ with a variable, you use it with a string so that it escapes it for you. For example, in your last post you have \\ in there. With @ you don't have to. Do this:
@"c:\long string path\something.png"
Instead of:
@"c:\\long string path\\something.png"
Because if you use @, it will make it exactly like what you have, properly escaped: two quotes in a row, not just one, and try to read that as the path.
Quzah.
Hope is the first step on the road to disappointment.
quzah nailed it. To complement on his answer:
Either use the full path constant as illustrated on his post, or if you require the variable to be passed to the Bitmap constructor, declare it as:
Code:string absolute_path_string = @"c:\long string path\something.png";
Originally Posted by brewbuck:
Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.
