Loading and checking image from local disk in C#

Question

i'm trying to load image from local disk, and it's working. But my problem is that i'd like to check if image is available in folder, and if not - then MessageBox.Show("No image!");

Loading image:

 Bitmap bitmap1 = new Bitmap(@"Documentation\\Pictures\\"+table[8]+".jpg"); pictureBox.Image=bitmap1;

And you should also Validate if a File is name Picutre.png but it's not a Picutre ,search for specific Exception ! — Rosmarine Popcorn
– Rosmarine Popcorn, Commented Apr 10, 2011 at 14:34
When you use the @ symbol, you can use a path just as it appears on the explorer. You no longer have to escape the slashes. — Only Bolivian Here
– Only Bolivian Here, Commented Apr 10, 2011 at 14:36

Darin Dimitrov · Accepted Answer · 2011-04-10 14:16:08Z

5

You could use the File.Exists method to check whether a given file exists:

var file = Path.ChangeExtension(table[8], ".jpg"); var fullPath = Path.Combine(@"Documentation\Pictures", file); if (!File.Exists(fullPath)) { MessageBox.Show("No image!"); } else { pictureBox.Image = new Bitmap(fullPath); }

answered Apr 10, 2011 at 14:16

Darin Dimitrov

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6 Comments

user447356 Over a year ago

In ASP.NET it better be Server.MapPath("Documentation/Pictures") otherwise it will look for the files in the system folder of Windows.. :)

Darin Dimitrov Over a year ago

@Shadow Wizard, yeah, absolutely, in fact in ASP.NET it should be: Server.MapPath("~/Documentation/Pictures")

Darin Dimitrov Over a year ago

@Shadow Wizard, what ASPX are you talking about? Can't see any reference in the OP about ASP.NET. Not to mention that pictureBox and ASP.NET, hmm...

Only Bolivian Here Over a year ago

@Darin: Can you elaborate on why you're using Path.ChangeExtension? Is there a specific reason?

Darin Dimitrov Over a year ago

@Sergio, it's safer, I always use file specific functions when dealing with files such as Path.Combine, Path.ChangeExtension, ... instead of string concatenations. For example if table[8] ends with a dot (.) the function will correctly handle the case whereas if you are using string concatenations you could end up with foo..jpg.

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M.A. Hanin · Accepted Answer · 2011-04-10 14:19:32Z

Try using the File.Exists method for testing if the file itself exists. Note, however, that between invoking that method and invoking the method which actually loads the file, the file could already be gone. Thus, exception handling should be used nonetheless.

See this link for further info.

Anuraj · Accepted Answer · 2011-04-10 14:26:31Z

Try this

string fileName = string.Format(@"Documentation\\Pictures\\{0}.jpg",table[8]); if(!File.Exists(fileName)) { MessageBox.Show("No Image"); } else { Picture1.Image = Image.FromFile(fileName); }

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