private async void extractButton_Click(object sender, EventArgs e)
{
//Checks that ensures that a valid input was made
if (textBox1.Text == string.Empty || textBox1.Text == " ")
{
MessageBox.Show("Textbox cannot be empty.", "Warning",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
textBox1.Text = string.Empty;
return;
}
if (!Uri.IsWellFormedUriString(textBox1.Text, UriKind.Absolute))
{
MessageBox.Show("URL is not in correct format", "Warning",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
textBox1.Text = string.Empty;
return;
}
imageList.Clear();
listBox1.Items.Clear();
fileExtension = null;
url = textBox1.Text;
label1.Text = "Extracting data.";
//Async calling methods
CallingMethodsAsync caller = new CallingMethodsAsync();
try
{
imageList = await caller.DownloadAsync(textBox1.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Warning",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
foreach (var imageLink in imageList)
{
listBox1.Items.Add(imageLink);
}
if (imageList.Count == 0)
{
MessageBox.Show("No images found", "Results",
MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
label1.Text = string.Format("Found {0} images.", imageList.Count);
}
