I try to use the WebBrowserControll with C#. I use the following Code.
The WebBrowser Controll open the Web Page and if there is a href= blank it is also oppend in an new WebBrowser Controll. But If I want to open an new JavaScript with window.open it doenst open an new WebBrowser Controll. What I have to do that a href= blank and a Java Script is opend in my WebBrowser Controll.
Does anyone have a Answer??
Thanks for your help.
public MainWindow()
{
InitializeComponent();
webBrowser1.ScriptErrorsSuppressed = true;
webBrowser1.FileDownload += new EventHandler(webBrowser1_FileDownload);
webBrowser1.NewWindow += new CancelEventHandler(webBrowser1_NewWindow);
webBrowser1.DocumentCompleted +=new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
webBrowser1.PreviewKeyDown += new PreviewKeyDownEventHandler(webBrowser1_PreviewKeyDown);
this.FormClosing += new FormClosingEventHandler(webBrowser1_FormClosing);
}
public void setURL(String aURL)
{
webBrowser1.Url = new Uri(aURL);
}
private void webBrowser1_NewWindow(object sender, CancelEventArgs e)
{
// open href= blank in new WebBrowser Controll
MainWindow newWindow = new MainWindow();
newWindow.setURL(webBrowser1.StatusText);
newWindow.Show();
e.Cancel = false;
}
private void webBrowser1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
Console.WriteLine(e.KeyCode.ToString() + " " + e.Modifiers.ToString());
if (e.Modifiers == Keys.Control && e.KeyCode == Keys.V)
{
MessageBox.Show("ctrl-v pressed");
}
}
private void webBrowser1_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show(this, "Really close the window?", "Caption", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
e.Cancel = false;
}
else
{
e.Cancel = true;
}
}
private void beendenToolStripMenuItem1_Click(object sender, EventArgs e)
{
this.Close();
}
I Do not think it is possible... The browser should send a create argument (1), when clicking on a window.open, all though it does work when closing a window (destroy (2))
If you are up for a hack you could search the document on load and replace the window.open in the DocumentText property, with tags instead, it should work with a bit of creativity.
Good luck
Related
So i have that aplication:
Menu Picture
and when i press the button "Terminar sessão" it's supposed to log out (and its works)
but when i went back to login the menu does not close!
Login Picture after log out
I am using nested form, the form ends session is closing but not the menu.
This is my menu.cs:
private Form activeForm = null;
private void openChildForm(Form childForm)
{
if (activeForm != null) activeForm.Close();
activeForm = childForm;
childForm.TopLevel = false;
childForm.FormBorderStyle = FormBorderStyle.None;
childForm.Dock = DockStyle.Fill;
panelChildForm.Controls.Add(childForm);
panelChildForm.Tag = childForm;
childForm.BringToFront();
childForm.Show();
}
private void button2_Click(object sender, EventArgs e)
{
panel1.Visible = false;
openChildForm(new Transferências());
Slidepanel.Height = (button2.Height - 15);
Slidepanel.Top = (button2.Top + 10);
}
and on "Transferências" form i have it:
private void Sessao_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Tem a certeza que deseja terminar sessão?", "Terminar Sessão", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
this.Hide();
Login login = new Login();
login.ShowDialog();
}
}
i already tried Menu.Close(); but it does not work
With the amount of information you provide, it is quite hard to tell what the problem might be. Did you try to debug it to verify that your program actually tries to execute Menu.Close()?
If you show your code people might be able to help you more.
Okay. So, I'm making my own internet browser and I have tabs. But, I'm trying to make it a real time url updater while if you click on any link it will show up in the textbox of the url.
It will not work.
Here is the tab button.
private void button8_Click(object sender, EventArgs e)
{
WebBrowser Browser = new WebBrowser();
tabControl1.TabPages.Add("New Page");
tabControl1.SelectTab(tabControl1.TabPages.Count - 1);
Browser.Name = "Web Browser";
Browser.Dock = DockStyle.Fill;
tabControl1.SelectedTab.Controls.Add(Browser);
((WebBrowser)(tabControl1.SelectedTab.Controls[0])).GoHome();
And here is where my textbox isn't getting the right url.
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
button1.Enabled = true;
textBox1.Enabled = true;
//textBox1.Text = Browser.Url.ToString();
((WebBrowser) (this.tabControl1.SelectedTab.Controls[0])).Url.ToString();
}
In order for this to work, you need to get all link elements of the web page you've just loaded and assign a custom function to the HtmlElement.Click event of that element.
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
button1.Enabled = true;
textBox1.Enabled = true;
var linkElements = Browser.Document.GetElementsByTagName("a");
foreach(HtmlElement link in linkElements)
{
link.Click += (s, args) =>
{
// a link is being clicked
// get the url the link is pointing to using the href attribute of the element
textBox1.Text = link.GetAttribute("href");
}
}
}
I'm using the following code to make my app to load a url,
WebBrowser wb = new WebBrowser();
wb.Navigate(new Uri(uri,UriKind.Absolute));
But still it is not loading that page? What could be the problem??
WebBrowser is a control. Like a button or a textblock, you won't see anything unless you put it somewhere in your page.
To launch an external browser, use WebBrowserTask:
var webBrowserTask = new WebBrowserTask();
webBrowserTask.Uri = new Uri(uri, UriKind.Absolute);
webBrowserTask.Show();
Yo can't have any callbacks with the default WebBrowserTask in wp, if you need more control, use the WebBrowser as you have been doing,
Xaml
<phone:WebBrowser IsScriptEnabled="True" LoadCompleted="UriContentLoaded" x:Name="browserControl" />
Code Behind
public MainPage() //Your page constructor
{
InitializeComponent();
this.browserControl.Loaded += SetBrowserUri;
}
private void SetBrowserUri(object sender, RoutedEventArgs e)
{
browserControl.Navigate(new Uri("http://www.bing.com"));
}
private void UriContentLoaded(object sender, NavigationEventArgs e)
{
if (MessageBox.Show("Do you want to load a second uri?", "Load again", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
{
browserControl.LoadCompleted -= this.UriContentLoaded; //Remove previous handler
browserControl.LoadCompleted += this.SecondUriContentLoaded; //Add new handler
browserControl.Navigate(new Uri("http://www.google.com"));
}
}
private void SecondUriContentLoaded(object sender, NavigationEventArgs e)
{
MessageBox.Show("Finished loading");
}
I have a situation which occurs in WebBrowser with C#.
I am trying to do downloader through a site However , when i click first time, it doesn't work but if I click second times it works.
How can i solve this problem .
Sincerely.
Codes :
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
webBrowser1.Document.GetElementById("youtube-url").SetAttribute("value", textBox1.Text);
webBrowser1.Document.GetElementById("submit").InvokeMember("click");
webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
label3.Text = "Video Alındı , indirme işleminin hazır olması bekleniyor";
}
void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
HtmlElementCollection col = webBrowser1.Document.GetElementsByTagName("a");
String link = "";
foreach (HtmlElement el in col)
{
if (el.InnerText == "Download")
{
link = el.GetAttribute("href");
Download(link);
label3.Text = "Video indiriliyor";
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
webBrowser1.ScriptErrorsSuppressed = true;
webBrowser1.Navigate("http://www.youtube-mp3.org/tr");
}
void Download(String link)
{
WebClient downloader = new WebClient();
downloader.DownloadFileAsync(new Uri(link),#"D:\a.mp3");
downloader.DownloadProgressChanged += new DownloadProgressChangedEventHandler(downloader_DownloadProgressChanged);
}
void downloader_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
label3.Text = "Video İndiriliyor : " + progressBar1.Value + "%";
if (progressBar1.Value == 100)
label3.Text = "Video İndirildi";
}
You're blocking yourself from investigating what the problem is. It's never a good idea to disable script errors for WebBrowser control (as you do with ScriptErrorsSuppressed = true), unless you handle them internally in your host app. Do the following:
enable script errors (ScriptErrorsSuppressed = false);
enable script debugging for all applications;
implement WebBrowser Feature Control (FEATURE_BROWSER_EMULATION), so the web page is getting the same (or close) experience and HTML features as with full-featured IE browser.
Then, hopefully, you can find out what's going wrong when you're simulating a button click, and debug it.
I create a new MdiChild from MainForm using this method:
AdminLogInForm adminForm;
private void LogInAsAdminMenuItem_Click(object sender, EventArgs e)
{
if (adminForm == null)
{
adminForm = new AdminLogInForm();
adminForm.MdiParent = this;
adminForm.Show();
adminForm.Dock = DockStyle.Fill;
adminForm.BringToFront();
LogInAsAdminMenuItem.Enabled = false;
}
else
{
adminForm.Activate();
adminForm.BringToFront();
}
}
Why when i close my child, using in chld form "this.close()" using that method i cant open it anymore?
there i call close();
private void cancelLogInButton_Click(object sender, EventArgs e)
{
this.MdiParent.Activate();
if(this.MdiParent!=null)
((MainForm)this.MdiParent).LogInAsAdminMenuItem.Enabled = true;
this.Close();
}
by the way to make work that I asked before I hed to plase this.Close(); after all statements .
By closing the form you are not making adminForm instance to null (Which is what your if condition will check when you try to open it next time.)
On diposal of your form make adminForm = null and then your if condition will work next time.
private void LogInAsAdminMenuItem_Click(object sender, EventArgs e)
{
if (adminForm == null)
{
adminForm = new AdminLogInForm(this);
adminForm.Disposed += new EventHandler(adminForm_Disposed); //Add Disposed EventHandler
adminForm.MdiParent = this;
adminForm.Show();
adminForm.Dock = DockStyle.Fill;
adminForm.BringToFront();
LogInAsAdminMenuItem.Enabled = false;
}
else
{
adminForm.Activate();
adminForm.BringToFront();
}
}
void adminForm_Disposed(object sender, EventArgs e)
{
adminForm = null;
}
As Described by Marshal that the closing of a form makes it disposed you should add a condition for disposing as well like this
AdminLogInForm adminForm;
private void LogInAsAdminMenuItem_Click(object sender, EventArgs e)
{
if (adminForm == null || adminForm.IsDisposed)
{
adminForm = new AdminLogInForm();
adminForm.MdiParent = this;
adminForm.Show();
adminForm.Dock = DockStyle.Fill;
adminForm.BringToFront();
LogInAsAdminMenuItem.Enabled = false;
}
else
{
adminForm.Activate();
adminForm.BringToFront();
}
}
Or you can also create a function to use a form as mdi
like this