Set & Get input value in web browser in c#

Question

I just try to understand the concept of in web browser control c# win app.

I have created a Windows app with web browser control. I have called a web page (which is my own) and try to set value in the web page from my app.

When i try with Google

webBrowser1.Navigate("http://google.com/search?q=" + "C#");

it works fine.

When i try in this way, it is not working.

HtmlElement textArea = webBrowser1.Document.All["q"];
textArea.InnerText = "dsfs";

Can anyone help me to achieve this?

What do you want to achieve ? Do you want to set a value for query string parameter "q" ? — Edward N
– Edward N, Commented May 25, 2015 at 4:21

StuartLC · Accepted Answer · 2015-05-25 04:38:06Z

2

You will need to wait for the WebBrowser to load before you access it (otherwise Document will be null until loaded) - subscribe a DocumentCompleted event handler for this. Also Document.All["q"] will return the first element with the name "q".

webBrowser1.Navigate("http://stackoverflow.com/questions/30431004");
webBrowser1.DocumentCompleted += (o, args) =>
{
    var ele = webBrowser1.Document.All["q"];
    if (ele.TagName.ToLower() == "input")
    {
        ele.InnerText = "dsfs";
    }
};

If you want to change more than one such element, or if you want to locate elements by Id, Tag name etc, you will need to iterate the collection:

foreach (HtmlElement ele in webBrowser1.Document.All)
{
    if (ele.TagName.ToLower() == "input")
    {
        ele.InnerText = "dsfs";
    }
}

edited May 25, 2015 at 4:38

answered May 25, 2015 at 4:06

StuartLC

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