I have a panel which displays a form which displays a webbrowser. In the UI designer I added the Url of my .html file and it worked fine.
But now I am using my application on a different system and thus the path to the .html does not exists.
So I have to do it in code and use string sspBaseFile = System.AppDomain.CurrentDomain.BaseDirectory;
In this function I am trying to get it to work. The form has a UI element called webbrowser1
private void SSP_Load(object sender, EventArgs e)
{
this.webBrowser1.DocumentTitleChanged += new EventHandler(webBrowser1_DocumentTitleChanged);
this.Controls.Add(webBrowser1);
webBrowser1.AllowNavigation = true;
this.webBrowser1.Navigate(new Uri(sspBaseFile + "frmSSPeditor.html"));
}
Why isn't the html displayed? I verified that the .html is in the correct place, next to the binary.
Related
We have a need where in we need to query image server for image and display it on CEF web browser control within Windows form.
public partial class CustomerWindow : Form
{
private string image_url;
private ChromiumWebBrowser _browser;
private bool _browserInitialised = false;
public CustomerWindow()
{
browser.IsBrowserInitializedChanged += OnIsBrowserInitializedChanged;
}
// calls to server for validating user credentials and get cookie
public LoadData()
{
if(_browserInitialised)
{
browser.Load(_imsContextualImageUrl);
}
}
public void OnIsBrowserInitializedChanged(object sender, EventArgs e)
{
var chromeWebBrowser = (ChromiumWebBrowser)sender;
if (!chromeWebBrowser.IsBrowserInitialized) return;
chromeWebBrowser.Load(_imsContextualImageUrl);
_browserInitialised = true;
}
}
We are creating CEF browser only once per application and disposing it at the close event of form.
Code is working and displaying image for the urls which has data, when there is no data , we need to clear the previous image displayed on CEF browser and shown empty CEF browser.
Is there any solution other than disposing CEF browser and recreating it for every launch request?
Load an empty HTML page, just put this,
<html><body></body></html>
that would do fine.. you can use following API to load a string in CEF,
ChromiumWebBrowser.LoadString(string html, string url);
I got this fragment from SO, Working with locally built web page in CefSharp
ChromiumWebBrowser.LoadString(string html, string url) is helpful but then chrome browser getting rendered with client's (company) proxy-server response as well in addition to html response.
Tried, Load() API ie ChromiumWebBrowser.Load("https:////somestring/someurl"), it rendered like charm with empty content.Thanks for the suggestion.
Good Morning,
I have a Web browser embedded within a C# winform. When loading the web-browser, it loads in a local file and displays the page with no issues.
I then have a button with an OnClick method which does the following:
private void button1_Click(object sender, EventArgs e) {
this.webBrowser1.Navigate("about:blank");
HtmlDocument doc = this.webBrowser1.Document;
doc.Write(String.Empty);
this.webBrowser1.DocumentText = //PathToDocumentText;
}
This was taken from this SO question and causes the web browser to freeze up. On hover shows the cursor with the loading spinning icon.
I am simply wanting to change the document text from one local file to another (both work if I load them in manually OnLoad).
Any help appreciated.
this.webBrowser1.Navigate("about:blank");
this.webBrowser1.Document.OpenNew(false);
this.webBrowser1.Document.Write(//pathtoFile);
this.webBrowser1.Refresh();
This does the trick, Thanks to anyone who looked at this.
I've created a method so that when a button (butCommit) is clicked, the value of a textbox is taken and stored into a string. That string is then written to a .txt file using the WriteAllText method. However, when this method is executed, the file is not modified at all.
The button method is working fine, as I have a response.redirect method in there which works every time.
The path for the .txt file is also correct as I have another method which will, on the page load, display the current contents of the .txt file (using the ReadAllText method) and the exact same path that I am using for the WriteAllText method.
Here is the code giving me problems:
void butCommit_Click(object sender, EventArgs e)
{
var path = Server.MapPath(#"~/content.txt");
string content = txtHomepageContent.Text;
System.IO.File.WriteAllText(path, content);
Response.Redirect("Default.aspx");
}
I'll repeat again: The above method is initialized and works fine with the Response.Redirect method, just not the WriteAllText method.
EDIT For more clarity:
The purpose of this is to display a message on the home page of a site. That message is required to be stored in a .txt file which is on the server (named content.txt). In the ControlPanel.aspx page, the user needs to be able to change the context of the text file using a text box. Preferably they are also able to view what is currently in content.txt using the same text box.
The code I have for the viewing bit is this:
protected void Page_Load(object sender, EventArgs e)
{
var path = Server.MapPath(#"~/content.txt");
string content = System.IO.File.ReadAllText(path);
txtHomepageContent.Text = content;
}
This specifies "path" as the path to content.txt, then specifies "content" as a string containing content.txt's data. After that it places "content" into the textbox txtHomepageContent. This is also the text box used to input the new data for content.txt.
It seems if I remove the above section of code, I am able to write to the text file now with no problems, however I of course am unable to view what is in there first. If I leave the above code chunk in, then whatever I write in the textbox is ignored, and the original text is submitted back into the content.txt, resulting in no changes.
I do understand there are easier ways of doing this such as storing in a database, but the requirements are for it to be in a .txt file.
You can either use the Page_Init event handler instead of Page_Load to initialize your text box (since submitted postback values will load between the Init and Load events, effectively overwriting the text box value with what was submitted), or if you want to stay with Page_Load, check whether there is a postback first:
protected void Page_Load(object sender, EventArgs e)
{
if (this.Page.IsPostBack)
return;
var path = Server.MapPath(#"~/content.txt");
string content = System.IO.File.ReadAllText(path);
txtHomepageContent.Text = content;
}
I have some trouble using the webbrowser control in C#, especially when I print it. The thing is, I have a Barcode in my html file and I have to print it (I use a font to create the code). When I open the html file with Firefox or any other Web browser, my barecode is good and I can scan it. But, when I open my file with my webbrowser in c#, or when I print it, the webbrowser ad 2 characters after the barecode. And, when I print the file, my document is not centered, it's like the webbrowser add a margin-left property. So my question is, is there any way to print an html file, using a webbroser, exactly how I see the html file when I use firefox or chrome for example. Here is the code I use.
curDir = Directory.GetCurrentDirectory();
webBrowserA4.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(PrintDocument);
webBrowserA4.Url = new Uri(String.Format("file:///{0}/print.html", curDir));
private void PrintDocument(object sender, WebBrowserDocumentCompletedEventArgs e)
{
// Print the document now that it is fully loaded.
((WebBrowser)sender).Print();
// Dispose the WebBrowser now that the task is complete.
((WebBrowser)sender).Dispose();
}
EDIT: So, now, I have another problem, here is the screen of what my file looks like when I print it: http://imgur.com/q7ovEA1 As you can see, there is a "margin-left", and I can't remove it. I also want to remove this "page 1 of 1" and the Title.
private void button1_Click(object sender, EventArgs e)
{
webBrowser1.Navigate(textBox1.Text);
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser web = (WebBrowser)sender;
richTextBox1.Text = web.DocumentText;
}
above is sample code.
it's giving all Text of Current Open, if contents is updated by JavaScript, it visible but Document.Text not update.
Please Help guys
I had the same problem. Use the following sample code:
IHTMLDocument2 doc = webBrowser1.Document.DomDocument as IHTMLDocument2;
string content = doc.body.innerText;
Also, add mshtml to the references of your project (if you dont know how to add the refernce, just google it).
Actually, whenever you use this code, the value in the doc variable is the updated version of the contents of the webbrowser.
Good Luck
I would guess that the javascript that is executing on the page which is modifying the content is happening after the DocumentCompleted event; Perhaps you can try a different event such as 'Invalidated'.
The WebBrowser.DocumentText also many not reflect any changes to the DOM, and you may need to navigate the DOM through the WebBrowser.Document property.
http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser.document.aspx