private void UpdateUI() { klblHexOutput.Text = $"Hex Value: #{ conversionMethods.ConvertRGBToHexadecimal(conversionMethods.ConvertDecimalToInteger(numRed.Value), conversionMethods.ConvertDecimalToInteger(numGreen.Value), conversionMethods.ConvertDecimalToInteger(numBlue.Value)).ToUpper() }"; pnlPreview.BackColor = Color.FromArgb(conversionMethods.ConvertDecimalToInteger(numRed.Value), conversionMethods.ConvertDecimalToInteger(numGreen.Value), conversionMethods.ConvertDecimalToInteger(numBlue.Value)); klblAlpha.Enabled = GetEnableAlphaChannel(); numAlpha.Enabled = GetEnableAlphaChannel(); }