c# - 使用 mshtml 不起作用

Question

我有一个 C# 应用程序，我尝试使用一些 mshtml 元素。但我有一个问题。 using mshtml; 命名空间给我一个错误是 Visual Studio 2012。

这是我的源代码，

namespace Tagger
{

    using mshtml;
    using System;
    using System.Collections;
    using System.Collections.Generic;
    using System.Runtime.CompilerServices;
    using System.Text;

    public class HTMLForm
    {
        private string _action = "";
        private string _method = "";
        public Hashtable Inputs = new Hashtable();

        public HTMLForm(IHTMLFormElement element)
        {
            this._method = element.method;
            this._action = element.action;
            foreach (IHTMLInputElement element2 in (IHTMLElementCollection) element.tags("input"))
            {
                try
                {
                    string name = element2.name;
                    string str2 = element2.value;
                    if (name == null)
                    {
                        name = element2.type;
                    }
                    this.Inputs.Add(name, str2);
                }
                catch
                {
                }
            }
        }

        public static HTMLForm[] GetAllForms(string html)
        {
            List<HTMLForm> list = new List<HTMLForm>();
            HTMLDocument document = (HTMLDocument) Activator.CreateInstance(Type.GetTypeFromCLSID(new Guid("25336920-03F9-11CF-8FD0-00AA00686F13")));
            document.write(new object[] { html });
            document.close();
            foreach (IHTMLFormElement element in document.forms)
            {
                list.Add(new HTMLForm(element));
            }
            return list.ToArray();
        }

        public static HTMLForm GetFormByAction(string html, string action)
        {
            foreach (HTMLForm form in GetAllForms(html))
            {
                if (form.Action.ToLower() == action.ToLower())
                {
                    return form;
                }
            }
            return null;
        }

        public string ToPostData()
        {
            StringBuilder builder = new StringBuilder();
            foreach (string str in this.Inputs.Keys)
            {
                object obj2 = this.Inputs[str];
                string str2 = (obj2 == null) ? "" : obj2.ToString();
                builder.AppendFormat("{0}={1}&", HTTPBase.encode(str), HTTPBase.encode(str2));
            }
            if (builder.Length > 1)
            {
                return builder.ToString().Substring(0, builder.Length - 1);
            }
            return "";
        }

        public string Action
        {
            get
            {
                return this._action;
            }
            set
            {
                this._action = value;
            }
        }

        public string Method
        {
            get
            {
                return this._method;
            }
            set
            {
                this._method = value;
            }
        }        
    }
}

但是我不能使用 htmlelement IHTMLElementCollection 的功能。编译器给我一个错误。

Error 1 The type or namespace name 'mshtml' could not be found (are you missing a using directive or an assembly reference?)

Error 5   The type or namespace name 'HTMLDocument' could not be found (are 

you missing a using directive or an assembly reference?

Error 2 The type or namespace name 'IHTMLFormElement' could not be found (are you missing a using directive or an assembly reference?)

Error 3 The type or namespace name 'IHTMLElementCollection' could not be found (are you missing a using directive or an assembly reference?)

Error 4 The type or namespace name 'HTMLDocument' could not be found (are you missing a using directive or an assembly reference?)

Answer 1

在 Solution Explorer 中右键单击项目中的 References。然后单击 Add Reference...。在 Assemblies 中搜索“HTML”，您将看到 Microsoft.mshtml。将它添加到您的项目中，您就可以使用 HTMLDocument。祝你好运