How do I outo click web button in C# win form application

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i can do this for this web
web
<input id="btnSubmit" class="btn" value="btn">

using this C# code
HtmlDocument doc = this.webBrowser1.Document;
webBrowser1.Document.GetElementById("btnSubmit").InvokeMember("click");

but i can not to do this for
web
<button type="submit" class="btn btn-primary btn-lg">Next</button>

What I have tried:

i want to click web button Automatically in C# win form application for all typ of button
with id or without id

Posted 9-May-16 8:11am

vahidsj2

Updated 9-May-16 19:10pm

v2

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Karthik_Mahalingam 9-May-16 14:24pm

provide some link

2 solutions

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Karthik_Mahalingam · Answer 1 · 2016-05-09T08:50:00

try this

C#

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
           HtmlElementCollection buttons =  webBrowser1.Document.GetElementsByTagName("button");
           if (buttons != null)
           {
               HtmlElement nextButton = buttons.Cast<HtmlElement>().FirstOrDefault(k => k.InnerText == "Next");
               if (nextButton != null)
                  nextButton.InvokeMember("click");
           } 
        }

koolprasad2003 · Answer 2 · 2016-05-09T19:10:00

Though you have used 'button' type instead of 'input' but when browser render your web page it automatically converts it to 'input', check below snippet and see if it works for you

C#

HtmlElementCollection elc = this.webBrowser1.Document.GetElementsByTagName("input");  
foreach (HtmlElement el in elc)  
{  
   if (el.GetAttribute("type").Equals("submit"))  
   {  
        el.InvokeMember("Click");  
   }  
 }

above code collect a tag from HTML source start with 'input' and then check of the type of the tag is submit, if it is. then it will directly Invoke click method.
OR
Other way is to check the view source and copy the 'id' of your web button and used it in below code

C#

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    webBrowser1.Document
        .GetElementById("HTMLID_of_your_web_button")
        .InvokeMember("Click");
}

How do I outo click web button in C# win form application

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