C# 使用 Web 浏览器控件按类名获取 div 的内容？
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Get the content of a div by class name using Web Browser control?
提问by Rafik Bari
I have a form with webBrowser1control that is used to load a page that contains in its HTML part the following line:
我有一个带有webBrowser1控件的表单，用于加载一个页面，该页面的 HTML 部分包含以下行：
...
<div class="cls">
Hello World !
</div>
I need to get the innerTextof the divelement. I tried the following:
我需要得到innerText的的div元素。我尝试了以下方法：
string result = "";
foreach (HtmlElement el in webBrowser1.Document.GetElementsByTagName("div"))
if (el.GetAttribute("class") == "cls")
{
result = el.InnerText;
}
But the code above doesn't seem to work, and according to Solution 1 for a similar question on another website, it is stated that
但是上面的代码似乎不起作用，根据另一个网站上类似问题的解决方案1，它指出
First thing which caught my eye is:
<div class="thin">does not define the name of thedivelement, it defines its CSS style class. Instead, use the attribute name (or both), for example:<div class="thin" name="thin">.
首先引起我注意的是：
<div class="thin">没有定义div元素的名称，它定义了它的 CSS 样式类。相反，使用属性名称（或两者），例如：<div class="thin" name="thin">。
How can I get the innerTextof the divelement, if there is a classattribute only?
我怎样才能获得innerText的的div元素，如果有一个class属性而已？
Any help would be highly appreciated.
任何帮助将不胜感激。
采纳答案by aliassce
You should use ClassNameinstead of class:
您应该使用ClassName代替class：
if (el.GetAttribute("className") == "cls") { … }
For details, see HtmlElement.GetAttribute("class") doesn't run.
有关详细信息，请参阅HtmlElement.GetAttribute("class") 不运行。
回答by zkanoca
Add runat="server"and IDattributes to the divas follows:
添加runat="server"和ID属性div如下：
…
<div class="cls" ID="hello_div" runat="server">
Hello World !
</div>
After adding runat="server"attribute, you can use it calling by IDon the code behind like an object:
添加runat="server"属性后，您可以ID像对象一样在后面的代码上调用它：
string result = hello_div.InnerText; // or InnerHtml
回答by user5152667
HtmlDocument doc = webBrowser1.Document;
HtmlElementCollection divs = doc.GetElementsByTagName("div");
foreach (HtmlElement div in divs)
{
try
{
var info = div.DomElement;
PropertyInfo[] pi = info.GetType().GetProperties();
string strClass = pi[0].GetValue(div.DomElement).ToString();
if (strClass == "cls")
{
//DoStuff
}
}
catch
{
}
}
