CODEWITHSUNDEEP
c#webbrowser-control
mrb398
mrb398

Reputation: 1317

WebBrowser control content width/height

I'm having difficulties trying to programmitcally determine the width and height of a webbrowser based on the contents of a fully loaded page. I need this information to capture a screenshot of the webpage.

This occures within a button click event

wbNY.Navigate(new Uri("http://www.website.com"), "_self");
wbNY.DocumentCompleted += wbNY_DocumentCompleted;

This is my document completed code

private void wbNY_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    if (e.Url == wbNY.Url)
    {
        if (wbNY.ReadyState == WebBrowserReadyState.Complete)
        {
            DoPageChecks();
        }
    }
}

Within DoPageChecks I call this method

TakeScreenshot(wbNY);

This is my TakeScreenshot method

protected void TakeScreenshot(WebBrowser wb)
{
    Size pageSize = new Size(wb.Document.Window.Size.Width,wb.Document.Window.Size.Height)
}

My screenshot code works fine, so I'm just showing everything up to the point where I'm trying to get the height and width of the webbrowser contents, so that I can take a screenshot with the correct dimensions.

I've also tried

    Size pageSize = new Size(wb.Document.Body.ScrollRectangle.Width,wb.Document.Body.ScrollRectangle.Height)

But this also isn't giving the correct values.

More specifically, height is coming over as 0, or a sometimes ~20px, when the real result should be closer to 800px+

Upvotes: 2

Views: 12278

Answers (2)

mrb398
mrb398

Reputation: 1317

Ultimately I went ahead and found mshtml had the tools to obtain the width/height.

The final screenshot method:

protected void TakeScreenshot(WebBrowser wb)
{
    mshtml.IHTMLDocument2 docs2 = (mshtml.IHTMLDocument2)wbNY.Document.DomDocument;
    mshtml.IHTMLDocument3 docs3 = (mshtml.IHTMLDocument3)wbNY.Document.DomDocument;
    mshtml.IHTMLElement2 body2 = (mshtml.IHTMLElement2)docs2.body;
    mshtml.IHTMLElement2 root2 = (mshtml.IHTMLElement2)docs3.documentElement;

    int width = Math.Max(body2.scrollWidth, root2.scrollWidth);
    int height = Math.Max(root2.scrollHeight, body2.scrollHeight);

    // Resize the control to the exact size to display the page. Also, make sure scroll bars are disabled
    wb.Width = width;
    wb.Height = height;

    Bitmap bitmap = new Bitmap(width, height);
    wb.DrawToBitmap(bitmap, new Rectangle(0, 0, width, height));
    bitmap.Save(SaveImgDirectory + filename);
}

Upvotes: 4

avector
avector

Reputation: 398

You want to get ActualHeight and ActualWidth, they return the rendered height and width of the Window, which is what you want if you are taking a screenshot.

Upvotes: 0

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