private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    WebBrowser wb = sender as WebBrowser;
    Encoding encoding = Encoding.GetEncoding(wb.Document.Encoding);
    using (StreamReader stream = new StreamReader(wb.DocumentStream, encoding))

public class WebBrowserEventManager
{
    private EventHandlerList _ehList = new EventHandlerList();
    private WebBrowser _wb = null;

var query = context.People.Where(item => item.Age == 20);

public int Find(string str, int start, RichTextBoxFinds options);
public int Find(string str, int start, int end, RichTextBoxFinds options);

create table Person
(
    Id int identity(1,1) primary key,

private void Form1_Load(object sender, EventArgs e)
{
    AppendText(richTextBox1, "红", Color.FromArgb(255, 0, 0));

public static T DeserializeAnonymousType<T>(string value, T anonymousTypeObject)

static bool IsFile(string path)
{
    return !string.IsNullOrEmpty(Path.GetExtension(path));
}