How i add a javascript file or function to vb.net WebBrowser

Question

i want to add a javascript File or Function to vb.net application web browser. i am using this function:

    Dim mScript As HtmlElement
    Dim mHead As HtmlElementCollection
    mHead = Browser1.Document.GetElementsByTagName("head")

    With Browser1
        mScript = .Document.CreateElement("script")
        mScript.SetAttribute("type", "text/javascript")
        mScript.SetAttribute("src", SoftwareROOT & "\plugin.js")

        .Document.Body.AppendChild(mScript)
        .Document.InvokeScript("script_load")
    End With

when i execute this function, it creates a new element at the bottom of page successfully. but the function .Document.InvokeScript("script_load") is not working..

Update:

JS File is here:

function script_load(){ alert('Hi from Script'); }

script_load();

Ry- · Accepted Answer · 2011-12-15 19:24:55Z

1

You need to wait for it to load, and that will take at least a little time. Instead, just run the script_load() function directly and immediately in your JavaScript; it won't make any difference.

answered Dec 15, 2011 at 19:24

Ry-♦

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10 Comments

Shahrukh Over a year ago

Browser loads a Page.. when loading is compleate.. it adds a script file.. then try to invoke function.. here is it fails. script file is successfully added.. but didn't invoked.

Ry- Over a year ago

@extremerose71: I believe I realize how it works. Put the line script_load(); at the end of plugin.js and it should work. Are you paying attention?

Shahrukh Over a year ago

i already tried this.. js file's code is now at the post.. check it.

Ry- Over a year ago

@extremerose71: What's the value of SOFTWARE_ROOT? Try using a forward slash (/plugin.js) instead, too.

Shahrukh Over a year ago

SOFTWARE_Root is the current directory of Software.. currently it is like "F:\VB2008\new_project".. i recently told you that javascript file is successfully included. i checked this manualy.. but the problem is The function of VB.NET "Browser1.Document.InvokeScript("script_load")" is not working...

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Shivesh96 · Accepted Answer · 2014-07-09 16:49:15Z

0

Public Sub InjectScript(Script As String)
    WebBrowser1.Document.InvokeScript("eval", New Object() {Script})
End Sub
InjectScript(My.Computer.FileSystem.ReadAllText(Environment.CurrentDirectory & "\Plugin.js".ToString))

put your js file in same root

answered Jul 9, 2014 at 16:49

Shivesh96

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