How do I change the desktop background using C#

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I have been trying to change the desktop background for a while but i can't do it. is there a way that i can change the desktop background using C#. i have try some code on google and there just make my desktop go black and don't add the image i want.

Please remember that i am using a console appcation (i thing i spelled that right)

What I have tried:

static void Main(string[] args)
{
    string photo = "FUN.PNG";
    SetWallpaper(photo);
}
[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;

public static void SetWallpaper(String path)
{
    SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, path,
        SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
}

Posted 15-Jul-18 13:21pm

WOLF 2018

Updated 15-Jul-18 14:00pm

v2

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WOLF 2018 · Accepted Answer · 2018-07-15T14:00:00

I found out how to do it. ps. you have to use the full path, that is why it didn't work.

C#

        static void Main(string[] args)
        {
            string photo = @"C:\Users\Wolf\source\repos\wolf\wolf\bin\Debug\FUN.PNG";
            DisplayPicture(photo);
        }
        [DllImport("user32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool SystemParametersInfo(uint uiAction, uint uiParam, String pvParam, uint fWinIni);

        private const uint SPI_SETDESKWALLPAPER = 0x14;
        private const uint SPIF_UPDATEINIFILE = 0x1;
        private const uint SPIF_SENDWININICHANGE = 0x2;

        private static void DisplayPicture(string file_name)
        {
            uint flags = 0;
            if (!SystemParametersInfo(SPI_SETDESKWALLPAPER,
                    0, file_name, flags))
            {
                Console.WriteLine("Error");
            }
        }
    }
}