通过用户控件中的按钮使用浏览器搜索“Ctrl+F”

您可以发送 commands 使用 IOleCommandTarget . 应该等于 HtmlDocument.ExecCommand 方法,但由于某些原因,某些命令在后面的中不起作用。

你要执行的命令是 IDM_FIND .

下面是一些运行它的C#代码:

private void SearchButton_Click(object sender, EventArgs e)
{
    dynamic ax = webBrowser1.ActiveXInstance;

    // IHtmlDocument2 also implements IOleCommandTarget
    var qi = (IOleCommandTarget)ax.Document;

    // MSHTML commands group
    var CGID_MSHTML = new Guid("de4ba900-59ca-11cf-9592-444553540000");
    const int IDM_FIND = 67;
    qi.Exec(CGID_MSHTML, IDM_FIND, 0, null, null);
}

[Guid("b722bccb-4e68-101b-a2bc-00aa00404770"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOleCommandTarget
{
    void NotDefinedHere(); // don't remove this

    [PreserveSig]
    int Exec([MarshalAs(UnmanagedType.LPStruct)] Guid pguidCmdGroup, int nCmdID, int nCmdexecopt, object pvaIn, [In, Out] object pvaOut);
}

作为另一个简单的选项,您只需发送 Ctrl键 + F 到 WebBrowser :

private void findToolStripButton_Click(object sender, EventArgs e)
{
    webBrowser1.Focus();
    SendKeys.Send("^f");
}