Pinta.ImageManipulation.ColorBgra.ToHexString C# (CSharp) Method

        public string ToHexString()
        {
            int rgbNumber = (this.R << 16) | (this.G << 8) | this.B;
            string colorString = Convert.ToString(rgbNumber, 16);

            while (colorString.Length < 6)
            {
                colorString = "0" + colorString;
            }

            string alphaString = System.Convert.ToString(this.A, 16);

            while (alphaString.Length < 2)
            {
                alphaString = "0" + alphaString;
            }

            colorString = alphaString + colorString;

            return colorString.ToUpper();
        }