I have a webbrowser control in my Winform application.
Below regions belong to division of code sample.
Region 1
The current url page loaded is "http://MyWebsite.com". I am clicking a link (say "About Us") in the web page using code. This click will take me to new url page ("http://MyWebsite.com/About_Us"). In Navigating event I am recording this new url.
Region 2
Now I want to get all elements of this new url and click on a new link. But not sure how to do it. In Region 2 I am also assigning the new url to webbrowser object. But nothing reflects in the instance. webbrowser.url still contains the previous url path.
I have following code for button click:
private void Button1Click(object sender, EventArgs e)
{
// Region 1---------------------------------------------
HtmlElementCollection links = webBrowser1.Document.GetElementsByTagName("A");
foreach (HtmlElement link in links)
{
if (link.InnerText != null && link.InnerText.Equals("Click to view magic"))
{
link.InvokeMember("Click");
break;
}
}
// EndRegion---------------------------------------------
// Region 2---------------------------------------------
webBrowser1.Url = new Uri(_url.AbsoluteUri, UriKind.Absolute);
webBrowser1.Navigate(_url); //New Edit
links = webBrowser1.Document.GetElementsByTagName("input");
foreach (HtmlElement link in links)
{
if ((link.GetAttribute("Name") == "BooHoo"))
{
link.InvokeMember("Click");
break;
}
}
// EndRegion---------------------------------------------
}
private void WebBrowser1Navigating(object sender, WebBrowserNavigatingEventArgs e)
{
_url = e.Url;
}
Can anyone help me to do this. The question may not be very clear. Please let me know if you need any further details. Thanks.
So it was tricky a bit or else I am careless. I was watching the property values in debug mode. Later I noticed that, after pressing F5 in Visual Studio (continue debugging) and all the methods are run, webbrowser shows the changed values.
Hope it helps.
You need to subscribe Navigated event as WebBrowser works asynchronously.
private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
--Do Something Here....
}
Related
I want to click on one link in one page.
Here is my code:
private void Button1_Click(object sender, EventArgs e)//GO
{
if (!Xpcom.IsInitialized) Xpcom.Initialize("Firefox");
geckoWebBrowser1.Navigate("http://www.tsetmc.com/loader.aspx?ParTree=151311&i=67126881188552864");
}
And I want to click on a link:
حقیقی-حقوقی
can anybody help me?
thanks.
I just looked up a Gecko project where I was clicking on the link and while the following might not be the most elegant way the same technique should work for you:
private void geckoWebBrowser1_DocumentCompleted(object sender, EventArgs e)
{
var elements = geckoWebBrowser1.Document.GetElementsByTagName("a");
foreach (GeckoHtmlElement element in elements)
{
if (element.ClassName == "violet")
{
element.ScrollIntoView(false);
element.Click();
}
}
}
I don't think the ScrollIntoView call is actually required, I just did that because it was an animated button and I wanted to see it was working. But you will need to wait until the document has loaded before clicking so I've put it in the DocumentCompleted event so before the Navigate don't forget to add:
geckoWebBrowser1.DocumentCompleted += geckoWebBrowser1_DocumentCompleted;
I was asked by a friend to develop a winform app to be able to extract data. I figured it would be easy enough - how wrong I was!
In my winform, I have included a webbrowser control and some buttons. The URL for the webbrowser is http://www.racingpost.com/greyhounds/card.sd and as you can imagine, it is the place to get data for greyhounds. When on the page above, there are a number of links within this area which are specific to a race time. If you click on any of these, it takes you to that race, and its this data that I need to extract. So, my initial thoughts were to get ALL links off the link above, then store them in a list, then just have a button available to take in whatever link it is, and then take the webbrowser to that location. Once there, I can then look to extract the data and store it as needed.
So, in the first instance, I use
//url = link above
wb1.Url = new Uri(url);
grab the data (which are links for each race on that day)
once I have this, use a further button to go to the specific race
wb1.Url = new Uri("http://www.racingpost.com/greyhounds/card.sd#resultday=2015-01-17&raceid=1344640");
then, once there, click another button to capture the data, after which, return to the original link above.
The problem is, it will not go to the location present in the link. BUT, if I click the link manually within the webbrowser, it goes there no problem.
I have looked at the properties of the webbrowser, and these all look fine - although I can't qualify that tbh!
I know if I try to go to the links manually, I can, but if I try to do it through code, it just wont budge. I can only assume I have done something wrong in the code.
Hope some of that makes sense - first posting, so apologies if I made a mess of it. I will provide all code no problem, but cant seem to figure out how to post the code in 'code format'?
//here is the code
public partial class Form1 : Form
{
Uri _url;
public Form1()
{
InitializeComponent();
wb1.Url = new Uri("http://www.racingpost.com/greyhounds/card.sd");
wb1.Navigated +=new WebBrowserNavigatedEventHandler(wb1_Navigated);
}
classmodules.trackUrl tu;
private void btnGrabData_Click(object sender, EventArgs e)
{
classmodules.utility u = new classmodules.utility();
rtb1.Text = u.GetWebData("http://www.racingpost.com/greyhounds/card.sd");
HtmlDocument doc = wb1.Document;
string innerText = (((mshtml.HTMLDocument)(doc.DomDocument)).documentElement).outerHTML;
innerText = Regex.Replace(innerText, #"\r\n?|\n", "");
rtb1.Text = innerText;
tu = new classmodules.trackUrl();
u.splitOLs(ref tu, innerText);
classmodules.StaticUtils su = new classmodules.StaticUtils();
su.SerializeObject(tu, typeof(classmodules.trackUrl)).Save(#"d:\dogsUTL.xml");
classmodules.ExcelProcessor xl = new classmodules.ExcelProcessor();
xl.createExcel(tu);
}
private void wb1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser wb1 = sender as WebBrowser;
this.Text = wb1.Url.ToString();
}
void wb1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
_url = e.Url;
}
private void btnGoBack_Click(object sender, EventArgs e)
{
goBack();
}
private void goBack()
{
wb1.Url = new Uri("http://www.racingpost.com/greyhounds/card.sd");
}
private void btnGetRaceData_Click(object sender, EventArgs e)
{
HtmlDocument doc = wb1.Document;
string innerText = (((mshtml.HTMLDocument)(doc.DomDocument)).documentElement).outerHTML;
rtb2.Text = innerText;
}
//###############################
//OK, here is the point where I want to take in the URL and click a button //to instruct the webbrowser to go to that location. I add an initial //counter to 0, and then get the first url from the list, increment the //counter, then when I click the button again, urlNo wil be 1, so then it //tries the second url
int urlNo = 0;
private void btnUseData_Click(object sender, EventArgs e)
{
if (tu.race.Count > urlNo)
{
string url = tu.race[urlNo].url;
wb1.Url = new Uri(url);
lblUrl.Text = url;
urlNo++;
}
else
{
lblUrl.Text = "No More";
}
}
Did you try the Navigate(...) method? In theory, the behavior of Navigate and Url is the same, but I can infer that they behave a bit different.
http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser.navigate(v=vs.110).aspx
I know this is a similar question to others out there but I just can't get mine to work.
I have a login form I am trying to auto fill in a webbrowser control.
I want it to be able to fill the form from strings that are set from 2 listboxes when a button is clicked on the form outside the webbrowser.
Here is what I have so far but it does nothing on the browser control when I click it.
private void button2_Click(object sender, EventArgs e)
{
string user = listBox1.SelectedValue.ToString();
string pw = listBox2.SelectedValue.ToString();
webBrowers1.Navigate("http://xxxxxxx.com/");
System.Windows.Forms.HtmlDocument document = this.webBrowser1.Document;
document.All["username"].SetAttribute("value", user);
document.All["password"].SetAttribute("value", pw);
HtmlElementCollection el2 = webBrowser1.Document.GetElementsByTagName("button");
foreach (HtmlElement btn in el2)
{
if (btn.InnerText == "Sign in")
{
btn.InvokeMember("Click");
}
}
}
I must be missing something but cannot figure it out! Thanks for any help
I have a WebBrowser control which I dinamically refresh/change url based on user input. I don't want to let the user to navigate, so I set AllowNavigation to false. This seems to be OK, however the below link is still "active":
Close Page
The issue here is: If the user clicks it, and confirms closure in the pop-up window I can't manage WebBrowser anymore. Looks like it is closed though the last page is still visible. Also I can't remove this link as the site is not managed by me.
Disable the control? Nope, I have to allow the user to highlight and copy text from the webpage.
Do I have any other option to disable literally ALL links?
#TaW: here is my code based on yours. So I have to set the url from my code and call a custom one:
button_click()
{
webBrowser1_load_URL("http://website/somecheck.php?compname=" + textBoxHost.Text);
}
Here it is the function:
private void webBrowser1_load_URL(string url)
{
string s = GetDocumentText(url.ToString());
s = s.Replace(#"javascript:window.close()", "");
webBrowser1.AllowNavigation = true;
webBrowser1.DocumentText = s;
}
The rest is exaclty what's in your answer:
private void webBrowser1_DocumentCompleted(object sender,
WebBrowserDocumentCompletedEventArgs e)
{
webBrowser1.AllowNavigation = false;
}
public string GetDocumentText(string s)
{
WebBrowser dummy = new WebBrowser(); //(*)
dummy.Url = new Uri(s);
return dummy.DocumentText;
}
Still it's not working. Please help me to spot the issue with my code.
If you have control over the loading of the pages you could grab the pages' text and change the code to disable rogue scripts. The one you showed can simply be deleted. Of course you might have to forsee more than the one..
Obviously this could be eased if you could do without javascript alltogether, but if that is not an option go for those that do real or pseudo-navigation..
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
webBrowser1.AllowNavigation = false;
}
private void loadURL_Click(object sender, EventArgs e)
{
webBrowser1.AllowNavigation = true;
string s = File.ReadAllText(textBox_URL.Text);
s = s.Replace("javascript:window.close()", "");
webBrowser1.DocumentText = s;
}
If the pages are not in the file system, the same trick should work, for instance by loading the URL into a dummy WebBrowser like this:
private void cb_loadURL_Click(object sender, EventArgs e)
{
string s = GetDocumentText(tb_URL.Text);
s = s.Replace("javascript:window.close()", "");
webBrowser1.AllowNavigation = true;
webBrowser1.DocumentText = s;
}
public string GetDocumentText(string s)
{
WebBrowser dummy = new WebBrowser(); //(*)
dummy.Url = new Uri(s);
return dummy.DocumentText;
}
Note: According to this post you can't set the DocumentText quite as freely as one would think; probably a bug.. Instead of creating the dummy each time you can also move the (*) line to class level. Then, no matter how many changes you had to make, you would always have an unchanged version, th user could e.g. save somewhere..
I have a WebBrowser inside a form and I want to do some automation with it. I click a button inside a windows form that commands the Navigate method of the WebBrowser to a certain page. Then I automatically click a link after DocumentCompleted has fired but after that I want to also click a Button that exists in the new page that appeared by clicking the link. It seems DocumentCompleted fires only when I click the button in the windows form not when I automatically click the a link inside the webpage.
void BtnTestClick(object sender, EventArgs e)
{
webBrowser1.Navigate(#"https://play.google.com/apps/");
webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
}
public void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
var webBrowser = sender as WebBrowser;
//webBrowser.DocumentCompleted -= WebBrowser_DocumentCompleted;
// test to see if we're on fist CONFIRM page then go forward by clicking
var links = webBrowser1.Document.GetElementsByTagName("a");
foreach (HtmlElement link in links)
{
if (link.InnerText == "Proceed anyway")
{
link.InvokeMember("click");
}
} // this works
webBrowser1.Document.GetElementById("gwt-uid-126").InvokeMember("click");
}
After the link.InvokeMember("click"); a new page loads in the webbrowser that has a button which I also want to click ( gwt-uid-126 )
But it doesn't get clicked.
I've also tried:
var elements = webBrowser1.Document.GetElementsByTagName("button");
foreach (HtmlElement file in elements)
{
if (file.GetAttribute("class") == "GKYRWGTDNX GKYRWGTDLY")
{
file.Focus();
file.InvokeMember("click");
}
}
With no luck!
From what I see, second click doesn't work because the document is not completely loaded and second click is invoked.
You will have to add another if-else block that handled second document load.
Edit1: I was on phone when I answered this, so couldn't provide any snippet. Following is the change that you can do WebBrowser_DocumentCompleted method.
var links = webBrowser1.Document.GetElementsByTagName("a");
foreach (HtmlElement link in links)
{
if (link.InnerText == "Proceed anyway")
{
link.InvokeMember("click");
}
}
// following is for the page that is loaded on click of link.
var gwt_uid_126 = webBrowser1.Document.GetElementById("gwt-uid-126");
if(gwt_uid_126 != null)
{
gwt_uid_126.InvokeMember("click");
}
You might want to check if the WebBrowser_DocumentCompleted method is actually being called on second page load. This might be the reason why second click is not registering.
move this part of code in the Constructor or Form_Load:
webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
try this instead of using WebBrowserDocumnetCompletedEventHandler:
void btnTestClick(object sender, EventArgs e)
{
webBrowser1.Navigate(#"https://www.google.com/");
while (webBrowser1.ReadyState != WebBrowserReadyState.Complete)
continue;
var webBrowser = sender as WebBrowser;
//webBrowser.DocumentCompleted -= WebBrowser_DocumentCompleted;
// test to see if we're on fist CONFIRM page then go forward by clicking
var links = webBrowser1.Document.GetElementsByTagName("a");
foreach (HtmlElement link in links)
{
if (link.InnerText == "Proceed anyway")
{
link.InvokeMember("click");
}
} // this works
webBrowser1.Document.GetElementById("gwt-uid-126").InvokeMember("click");
}