protected void btnUpload_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
System.Drawing.Image img = System.Drawing.Image.FromStream(imageUploader.PostedFile.InputStream);
var resizer = new ImageResizer(img);
System.Drawing.Image output;
if (rbCrop.Checked)
{
int left = int.Parse(txtLeftCrop.Text);
int right = int.Parse(txtRightCrop.Text);
int bottom = int.Parse(txtBottomCrop.Text);
int top = int.Parse(txtTopCrop.Text);
output = resizer.Cropped(left, right, top, bottom);
}
else
if (rbResize.Checked)
{
int width = int.Parse(txtWidth.Text);
int height = int.Parse(txtHeight.Text);
output = resizer.Resized(width, height, cbAspect.Checked);
}
else
{
int newSize;
if (int.TryParse(txtSquareSize.Text, out newSize))
{
output = resizer.Square(newSize);
}
else
{
output = resizer.Square();
}
}
string base64OutputImage = Base64(output);
imgOutput.Attributes.Add("src", "data:image/png;base64, " + base64OutputImage);
string base64InputImage = Base64(img);
imgInput.Attributes.Add("src", "data:image/png;base64, " + base64InputImage);
}
}