How to inject Javascript in WebBrowser control?

by

For some reason Richard’s solution didn’t work on my end (insertAdjacentText failed with an exception). This however seems to work:

HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
HtmlElement scriptEl = webBrowser1.Document.CreateElement("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptEl.DomElement;
element.text = "function sayHello() { alert('hello') }";
head.AppendChild(scriptEl);
webBrowser1.Document.InvokeScript("sayHello");

This answer explains how to get the IHTMLScriptElement interface into your project.

More Related Contents:

  1. WebBrowser control and JavaScript errors
  2. How can I get the WebBrowser control to show modern contents?
  3. Replacing .NET WebBrowser control with a better browser, like Chrome? [closed]
  4. How to get an HtmlElement value inside Frames/IFrames?
  5. Disable JavaScript error in WebBrowser control
  6. Open link in new TAB (WebBrowser Control)
  7. Interaction between WebBrowser Control and Windows Forms
  8. Calling a Javascript function in the C# webBrowser control
  9. Use cookies from CookieContainer in WebBrowser
  10. How to inject CSS in WebBrowser control?
  11. Prevent from displaying of Windows Security window
  12. Uploading Files Not Working – Need Assistance
  13. how to dynamically generate HTML code using .NET’s WebBrowser or mshtml.HTMLDocument?
  14. Passing variable between winforms
  15. DataGridView bound to a Dictionary
  16. Passing a value from one form to another form
  17. What’s the difference between Application.ThreadException and AppDomain.CurrentDomain.UnhandledException?
  18. MVP examples for Windows Forms
  19. Change border color in TextBox C#
  20. How to know user has clicked “X” or the “Close” button?
  21. Hiding unwanted properties in custom controls
  22. The notorious yet unaswered issue of downloading a file when windows security is required
  23. Remove the title bar in Windows Forms
  24. Remove Row inside TableLayoutPanel makes a layout problem
  25. Toggle switch control in Windows Forms
  26. WinForms DataGridView – databind to an object with a list property (variable number of columns)
  27. How do I prevent print screen
  28. How to exit all running threads?
  29. Remove top and bottom padding from Text drawn on an Image
  30. Validating user input / Give .NET controls status OK or NOK

Leave a Comment