C# .NET WebBrowser-FireBug样式检查HTML元素
是否可以使用.NET 3.5/4.0检查WinForm Web浏览器中的HTML元素 可能使用IHighlightRenderingServices接口或Html敏捷包 我希望应用程序能够像FireBug一样运行: 只需将要检查的元素悬停在鼠标上并单击即可。在Firebug 1.7之前的版本中,这会自动切换到HTML面板,并在节点视图中选择适当的元素 编辑: 哇,我刚刚发现这正是我想要做的。它是用Javascript编写的,在过去的两个小时里浏览了源代码之后,我仍然不知道如何将它整合到我的程序中 据我所知,它使用DOM元素的标记化和递归分析来找出CSS选择器路径: 编辑:好的!我已将selectorgadget加载到我的应用程序中。它允许您选择与Firebug完全相同的HTML元素!甚至创建Xpath查询 然而,我正在使用AxWebBrowser,我一直在研究如何让它与HtmlAgilityPack一起工作C# .NET WebBrowser-FireBug样式检查HTML元素,c#,javascript,.net,html,firebug,C#,Javascript,.net,Html,Firebug,是否可以使用.NET 3.5/4.0检查WinForm Web浏览器中的HTML元素 可能使用IHighlightRenderingServices接口或Html敏捷包 我希望应用程序能够像FireBug一样运行: 只需将要检查的元素悬停在鼠标上并单击即可。在Firebug 1.7之前的版本中,这会自动切换到HTML面板,并在节点视图中选择适当的元素 编辑: 哇,我刚刚发现这正是我想要做的。它是用Javascript编写的,在过去的两个小时里浏览了源代码之后,我仍然不知道如何将它整合到我的程序中
private void xpathQuery_Click(object sender, EventArgs e)
{
// Load Browser
HtmlWindow window = axWebBrowser1.Document.Window; // <---- 'object' does not contain a definition for 'Window'
string str = window.Document.Body.OuterHtml;
// Load HTML
HtmlAgilityPack.HtmlDocument HtmlDoc = new HtmlAgilityPack.HtmlDocument();
HtmlDoc.LoadHtml(str);
//Process Xpath Query
HtmlAgilityPack.HtmlNodeCollection Nodes = HtmlDoc.DocumentNode.SelectNodes(xpathText.Text);
//Print in Text box
foreach (HtmlAgilityPack.HtmlNode Node in Nodes)
{
richTextBox1.Text += Node.OuterHtml + "\r\n";
}
}
编辑:
我无法让AxWebBrowser使用HtmlAgilityPack,所以我只是使用WebClient类加载URL,然后用HtmlAgilityPack解析它
我刚用完刮网器。它的功能类似于VisualWebRipper和所有其他花费1000美元以上的产品
firebug lite呢
它是一个书签,可以将大多数firebug功能注入任何东西。我认为你不能用HtmlAgillity pack做到这一点。我之所以这么认为,是因为浏览器内存中发生了很多事情,比如javascript。因此,您将错过一些JavaScript结果中呈现的所有元素。 您也不会看到通过JS动态应用的样式
您最好的方法可能是使用mshtml搜索google for Microsoft HTML,mshtml和on Document_Loaded事件继续并迭代文档中的所有元素在javascript上添加鼠标以突出显示它们。然后,您可以通过在DOM中找到当前高亮显示的元素,它将具有某种选定的css类或您应用的某些特定边界属性,并迭代其属性来检查它。您可以使用Firebug lite,它的功能与原始Firebug非常相似。我以前确实做过这件事。您必须将文档强制转换到IExpando中,然后才能对其执行反射调用以获得成员。我实际上创建了一个DynamicNode类,它允许您使用dynamic关键字与文档交互 您可能希望改用mshtml COM对象: 在COM引用列表中添加对mshtml的引用 创建var document=new mshtml.HTMLDocument的实例; 强制转换为IExpando:var window=IExpandodocument.parentWindow; 创建动态对象包装器,请参见下文 使用动态关键字与文档交互。 例如,这里是我的动态节点:
class DynamicNode : DynamicObject, IExpando, IEnumerable
{
private IExpando value;
public DynamicNode(IExpando value)
{
this.value = value;
}
public override bool TryUnaryOperation(UnaryOperationBinder binder, out object result)
{
switch (binder.Operation)
{
case System.Linq.Expressions.ExpressionType.Convert:
case System.Linq.Expressions.ExpressionType.ConvertChecked:
result = this.value;
return true;
}
return base.TryUnaryOperation(binder, out result);
}
public override IEnumerable<string> GetDynamicMemberNames()
{
return this.value
.GetMembers(BindingFlags.Instance | BindingFlags.Public)
.Select(m => m.Name)
.Distinct()
.ToArray();
}
public override bool TryConvert(ConvertBinder binder, out object result)
{
result = this.value;
return true;
}
public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
{
if (indexes.Length == 1)
{
var memberName = indexes[0].ToString();
result = ReflectionHelpers.GetValue(this.value, memberName);
result = DynamicNode.Wrap(result);
return true;
}
return base.TryGetIndex(binder, indexes, out result);
}
public override bool TrySetIndex(SetIndexBinder binder, object[] indexes, object value)
{
if (indexes.Length == 1)
{
var memberName = indexes[0].ToString();
value = DynamicNode.Unwrap(value);
ReflectionHelpers.SetValue(this.value, memberName, value);
return true;
}
return base.TrySetIndex(binder, indexes, value);
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
if (base.TryGetMember(binder, out result))
return true;
result = ReflectionHelpers.GetValue(this.value, binder.Name);
result = DynamicNode.Wrap(result);
return true;
}
public override bool TrySetMember(SetMemberBinder binder, object value)
{
ReflectionHelpers.SetValue(this.value, binder.Name, value);
return true;
}
public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
{
if (binder.Name == "New")
{
var constructorArgs = new object[args.Length - 1];
Array.ConstrainedCopy(args, 1, constructorArgs, 0, constructorArgs.Length);
result = ReflectionHelpers.New(this.value, (string)args[0], constructorArgs);
}
else
{
result = ReflectionHelpers.Invoke(this.value, binder.Name, args);
}
result = DynamicNode.Wrap(result);
return true;
}
public override bool TryInvoke(InvokeBinder binder, object[] args, out object result)
{
IExpando self = this.value;
object[] constructorArgs = new object[0];
if (args.Length > 0)
{
self = (IExpando)DynamicNode.Unwrap(args[0]);
constructorArgs = new object[args.Length - 1];
Array.ConstrainedCopy(args, 1, constructorArgs, 0, constructorArgs.Length);
}
result = ReflectionHelpers.Call(this.value, self, constructorArgs);
result = DynamicNode.Wrap(result);
return true;
}
private static object Wrap(object value)
{
if (value != null && Marshal.IsComObject(value))
value = new DynamicNode((IExpando)value);
return value;
}
public static object Unwrap(object value)
{
DynamicNode node = value as DynamicNode;
if (node != null)
return node.value;
return value;
}
public IEnumerator GetEnumerator()
{
var members = this.value.GetProperties(BindingFlags.Public | BindingFlags.Instance);
var indexProperties = new List<Tuple<int, PropertyInfo>>();
var isArray = true;
foreach (var member in members)
{
int value = 0;
if (!int.TryParse(member.Name, out value))
{
isArray = false;
break;
}
var propertyMember = member as PropertyInfo;
if (propertyMember != null)
indexProperties.Add(Tuple.Create(value, propertyMember));
}
if (isArray)
{
indexProperties.Sort((left, right) => left.Item1.CompareTo(right.Item1));
foreach (var prop in indexProperties)
yield return prop.Item2.GetValue(this.value, null);
}
else
{
foreach (var member in members)
yield return member.Name;
}
}
#region IExpando
FieldInfo IExpando.AddField(string name)
{
return this.value.AddField(name);
}
MethodInfo IExpando.AddMethod(string name, Delegate method)
{
return this.value.AddMethod(name, method);
}
PropertyInfo IExpando.AddProperty(string name)
{
return this.value.AddProperty(name);
}
void IExpando.RemoveMember(MemberInfo m)
{
this.value.RemoveMember(m);
}
FieldInfo IReflect.GetField(string name, BindingFlags bindingAttr)
{
return this.value.GetField(name, bindingAttr);
}
FieldInfo[] IReflect.GetFields(BindingFlags bindingAttr)
{
return this.value.GetFields(bindingAttr);
}
MemberInfo[] IReflect.GetMember(string name, BindingFlags bindingAttr)
{
return this.value.GetMember(name, bindingAttr);
}
MemberInfo[] IReflect.GetMembers(BindingFlags bindingAttr)
{
return this.value.GetMembers(bindingAttr);
}
MethodInfo IReflect.GetMethod(string name, BindingFlags bindingAttr)
{
return this.value.GetMethod(name, bindingAttr);
}
MethodInfo IReflect.GetMethod(string name, BindingFlags bindingAttr, Binder binder, Type[] types, ParameterModifier[] modifiers)
{
return this.value.GetMethod(name, bindingAttr, binder, types, modifiers);
}
MethodInfo[] IReflect.GetMethods(BindingFlags bindingAttr)
{
return this.value.GetMethods(bindingAttr);
}
PropertyInfo[] IReflect.GetProperties(BindingFlags bindingAttr)
{
return this.value.GetProperties(bindingAttr);
}
PropertyInfo IReflect.GetProperty(string name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)
{
return this.value.GetProperty(name, bindingAttr, binder, returnType, types, modifiers);
}
PropertyInfo IReflect.GetProperty(string name, BindingFlags bindingAttr)
{
return this.value.GetProperty(name, bindingAttr);
}
object IReflect.InvokeMember(string name, BindingFlags invokeAttr, Binder binder, object target, object[] args, ParameterModifier[] modifiers, System.Globalization.CultureInfo culture, string[] namedParameters)
{
return this.value.InvokeMember(name, invokeAttr, binder, target, args, modifiers, culture, namedParameters);
}
Type IReflect.UnderlyingSystemType
{
get { return this.value.UnderlyingSystemType; }
}
#endregion
}
[ComVisible(true)]
public class ScriptObject : IReflect, IExpando
{
private readonly Type type;
private dynamic _constructor;
private dynamic _prototype;
public ScriptObject()
{
type = this.GetType();
}
[DispId(0)]
protected virtual object Invoke(object[] args)
{
return "ClrObject";
}
public dynamic constructor
{
get { return _constructor; }
set { this._constructor = value; }
}
public dynamic prototype
{
get { return _prototype; }
set { this._prototype = value; }
}
public string toString()
{
return "ClrObject";
}
#region IReflect Members
MethodInfo IReflect.GetMethod(string name, BindingFlags bindingAttr, Binder binder, Type[] types, ParameterModifier[] modifiers)
{
return type.GetMethod(name, bindingAttr, binder, types, modifiers);
}
MethodInfo IReflect.GetMethod(string name, BindingFlags bindingAttr)
{
return type.GetMethod(name, bindingAttr);
}
protected virtual MethodInfo[] GetMethods(BindingFlags bindingAttr)
{
return type.GetMethods(bindingAttr);
}
MethodInfo[] IReflect.GetMethods(BindingFlags bindingAttr)
{
return GetMethods(bindingAttr);
}
FieldInfo IReflect.GetField(string name, BindingFlags bindingAttr)
{
return type.GetField(name, bindingAttr);
}
FieldInfo[] IReflect.GetFields(BindingFlags bindingAttr)
{
return new FieldInfo[0]; // type.GetFields(bindingAttr);
}
PropertyInfo IReflect.GetProperty(string name, BindingFlags bindingAttr)
{
return type.GetProperty(name, bindingAttr);
}
PropertyInfo IReflect.GetProperty(string name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers)
{
return type.GetProperty(name, bindingAttr, binder, returnType, types, modifiers);
}
protected virtual PropertyInfo[] GetProperties(BindingFlags bindingAttr)
{
return type.GetProperties(bindingAttr);
}
PropertyInfo[] IReflect.GetProperties(BindingFlags bindingAttr)
{
return GetProperties(bindingAttr);
}
MemberInfo[] IReflect.GetMember(string name, BindingFlags bindingAttr)
{
return type.GetMember(name, bindingAttr);
}
MemberInfo[] IReflect.GetMembers(BindingFlags bindingAttr)
{
return type.GetMembers(bindingAttr);
}
protected virtual object InvokeMember(string name, BindingFlags invokeAttr, Binder binder, object target, object[] args, ParameterModifier[] modifiers, CultureInfo culture, string[] namedParameters)
{
if (name == "[DISPID=0]")
{
return this.Invoke(args);
}
return type.InvokeMember(name, invokeAttr, binder, target, args, modifiers, culture, namedParameters);
}
object IReflect.InvokeMember(string name, BindingFlags invokeAttr, Binder binder, object target, object[] args, ParameterModifier[] modifiers, CultureInfo culture, string[] namedParameters)
{
return this.InvokeMember(name, invokeAttr, binder, target, args, modifiers, culture, namedParameters);
}
Type IReflect.UnderlyingSystemType
{
get { return type.UnderlyingSystemType; }
}
#endregion
#region IExpando Members
public FieldInfo AddField(string name)
{
throw new NotImplementedException();
}
public MethodInfo AddMethod(string name, Delegate method)
{
throw new NotImplementedException();
}
public PropertyInfo AddProperty(string name)
{
throw new NotImplementedException();
}
public void RemoveMember(MemberInfo m)
{
throw new NotImplementedException();
}
#endregion
}
public static class ReflectionHelpers
{
private const BindingFlags DefaultFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;
public static object New(this IExpando scope, string functionName, params object[] args)
{
var constructor = (IExpando)scope.GetValue(functionName);
var proto = constructor.GetValue("prototype");
var obj = (IExpando)scope.GetValue("Object");
var instance = (IExpando)obj.Invoke("create", new object[] { proto });
Call(constructor, instance, args);
return instance;
}
public static object Call(this IExpando function, IExpando scope, params object[] args)
{
object[] callArgs = new object[args.Length + 1];
callArgs[0] = scope;
Array.Copy(args, 0, callArgs, 1, args.Length);
return Invoke(function, "call", callArgs);
}
public static void SetValue(this IExpando instance, string propertyName, object value)
{
if (instance == null)
throw new ArgumentNullException("instance");
if (string.IsNullOrEmpty(propertyName))
throw new ArgumentException("Must specify a value.", "propertyName");
Invoke(instance, propertyName, InvokeFlags.DISPATCH_PROPERTYPUT, new object[] { value });
}
public static object GetValue(this IExpando instance, string propertyName)
{
return Invoke(instance, propertyName, InvokeFlags.DISPATCH_PROPERTYGET, new object[0]);
}
public static object Invoke(this IExpando instance, string functionName, object[] args)
{
if (instance == null)
throw new ArgumentNullException("instance");
if (string.IsNullOrEmpty(functionName))
throw new ArgumentException("Must specify a value.", "functionName");
return Invoke(instance, functionName, InvokeFlags.DISPATCH_METHOD, args);
}
private static object Invoke(IExpando instance, string functionName, InvokeFlags flags, object[] args)
{
try
{
args = args.Select(arg => DynamicNode.Unwrap(arg)).ToArray();
switch (flags)
{
case InvokeFlags.DISPATCH_METHOD:
var method = instance.GetMethod(functionName, DefaultFlags);
return method.Invoke(instance, args);
case InvokeFlags.DISPATCH_PROPERTYGET:
var getProp = instance.GetProperty(functionName, DefaultFlags);
return getProp.GetValue(instance, null);
case InvokeFlags.DISPATCH_PROPERTYPUT:
case InvokeFlags.DISPATCH_PROPERTYPUTREF:
var setProp = instance.GetProperty(functionName, DefaultFlags);
if (setProp == null)
setProp = instance.AddProperty(functionName);
setProp.SetValue(instance, args[0], null);
return null;
default:
throw new NotSupportedException();
}
}
catch (COMException comex)
{
switch ((uint)comex.ErrorCode)
{
// Unexpected script error. This will be handled by the IProcess.UnhandledException event
case 0x80020101:
return null;
default:
throw;
}
}
}
private enum InvokeFlags
{
DISPATCH_METHOD = 1,
DISPATCH_PROPERTYGET = 2,
DISPATCH_PROPERTYPUT = 4,
DISPATCH_PROPERTYPUTREF = 8,
}
}
从C调用js函数:
this.host.eval("function add(x, y) { return x + y; }");
var z = (int)this.host.Window.add(7, 11);
Assert.Equal(7 + 11, z);
将.net对象插入文档并从js调用其成员:
this.host.Window.Custom2 = new Custom2();
this.host.Window.eval(@"
function test() {
return Custom2.Test().Value;
}");
bool success = this.host.Window.test();
Assert.True(success);
您只能将从ScriptObject继承的对象粘贴到文档中,尽管在上面的代码块中定义了这些对象。我想你可以把任何东西放进去,但是如果它们不实现DirectReflect,你会有奇怪的行为。有没有可能给我一个你的代码示例?我也需要一个示例代码。非常感谢。
this.host.Window.Custom2 = new Custom2();
this.host.Window.eval(@"
function test() {
return Custom2.Test().Value;
}");
bool success = this.host.Window.test();
Assert.True(success);