public Color GetColor(int x, int y)
{
var color = VideoCapture.GetColor(x, y);
SampleImage = null;
// update controls
form.checkBoxGraphicSampling.Checked = false;
PictureBoxShow(color);
form.textBoxGraphicX.Text = x.ToString();
form.textBoxGraphicY.Text = y.ToString();
form.textBoxGraphicWidth.Text = string.Empty;
form.textBoxGraphicHeight.Text = string.Empty;
form.textBoxGraphicColorR.Text = color.R.ToString();
form.textBoxGraphicColorG.Text = color.G.ToString();
form.textBoxGraphicColorB.Text = color.B.ToString();
form.textBoxGraphicWebColor.Text = $"#{color.R:X2}{color.G:X2}{color.B:X2}";
form.textBoxGraphicCode.Text = GenerateCode(x, y, color);
return(color);
}