private void btnApplyMedian_Click(object sender, EventArgs e)
{
int maskSizeXInt, maskSizeYInt;
maskSize maskSizeX = (maskSize)cbMedianX.SelectedIndex;
maskSize maskSizeY = (maskSize)cbMedianY.SelectedIndex;
edgeMethods edgeMethod = (edgeMethods)cbEdgeMethods.SelectedIndex;
Int32.TryParse(cbMedianX.SelectedItem.ToString(), out maskSizeXInt);
Int32.TryParse(cbMedianY.SelectedItem.ToString(), out maskSizeYInt);
mainImage.MedianOnImage(maskSizeX, maskSizeY, maskSizeXInt, maskSizeYInt, edgeMethod, (int)userPixel);
InvalidateImage();
}