why does this code lock my files?

Question

Ive narrowed down to this method but i don't understand why its locking the file. I believe you could use something like

using( something)
{

//do stuff here
}

But im not sure that would A) solve the issue or B) be the correct way if it did.

any ideas?

[DllImport("user32.dll", CharSet = CharSet.Auto)]private static extern Int32 SystemParametersInfo(UInt32 action, UInt32 uParam, String vParam, UInt32 winIni);  
    private static readonly UInt32 SPI_SETDESKWALLPAPER  = 0x14;  
    private static readonly UInt32 SPIF_UPDATEINIFILE    = 0x01;  
    private static readonly UInt32 SPIF_SENDWININICHANGE = 0x02;  

    private void SetWallpaper(string path)
    {
        try
        {
            Image imgInFile = Image.FromFile(path);
            imgInFile.Save(SaveFile, ImageFormat.Bmp);
            SystemParametersInfo(SPI_SETDESKWALLPAPER, 3, SaveFile, SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
        }
        catch
        {
            MessageBox.Show("error in setting the wallpaper");
        }
    }

#

Updated code

 private void SetWallpaper(string path)
    {
        if (File.Exists(path))
        {
            Image imgInFile = Image.FromFile(path);
            try
            {
                imgInFile.Save(SaveFile, ImageFormat.Bmp);
                SystemParametersInfo(SPI_SETDESKWALLPAPER, 3, SaveFile, SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
            }
            catch
            {
                MessageBox.Show("error in setting the wallpaper");
            }
            finally
            {
                imgInFile.Dispose();
            }
        }
    }

Answer 1

From MSDN: "The file remains locked until the Image is disposed." - so yes, this should be fixed by:

using (Image imgInFile ...) { ... }

(As a side note, I would tighten the try catch to just the .Save() and/or SystemParametersInfo() calls)