Export (0) Print
Expand All

HtmlElementCollection Class

Defines a collection of HtmlElement objects.

System.Object
  System.Windows.Forms.HtmlElementCollection

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public sealed class HtmlElementCollection : ICollection, 
	IEnumerable

The HtmlElementCollection type exposes the following members.

  NameDescription
Public propertyCountGets the number of elements in the collection.
Public propertyItem[Int32]Gets an item from the collection by specifying its numerical index.
Public propertyItem[String]Gets an item from the collection by specifying its name.
Top

  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetElementsByNameGets a collection of elements by their name.
Public methodGetEnumeratorReturns an enumerator that iterates through a collection.
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Top

  NameDescription
Public Extension MethodAsParallelEnables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension MethodAsQueryableConverts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension MethodCast<TResult>Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension MethodOfType<TResult>Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
Top

  NameDescription
Explicit interface implemetationPrivate methodICollection.CopyToInfrastructure. Copies the elements of the collection to an Array, starting at a particular Array index.
Explicit interface implemetationPrivate propertyICollection.IsSynchronizedGets a value indicating whether access to the HtmlElementCollection is synchronized (thread safe).
Explicit interface implemetationPrivate propertyICollection.SyncRootInfrastructure. Gets an object that can be used to synchronize access to the collection.
Top

The following code example uses HtmlElementCollection objects to print out a textual representation of the Document Object Model (DOM) of a page.


		private void PrintDomBegin()
		{
			if (webBrowser1.Document != null)
			{
				HtmlElementCollection elemColl = null;
				HtmlDocument doc = webBrowser1.Document;
				if (doc != null)
				{
					elemColl = doc.GetElementsByTagName("HTML");
					String str = PrintDom(elemColl, new System.Text.StringBuilder(), 0);
					webBrowser1.DocumentText = str;
				}
			}
		}

		private string PrintDom(HtmlElementCollection elemColl, System.Text.StringBuilder returnStr, Int32 depth)
		{
			System.Text.StringBuilder str = new System.Text.StringBuilder();

			foreach (HtmlElement elem in elemColl)
			{
				string elemName;

				elemName = elem.GetAttribute("ID");
				if (elemName == null || elemName.Length == 0)
				{
					elemName = elem.GetAttribute("name");
					if (elemName == null || elemName.Length == 0)
					{
						elemName = "<no name>";
					}
				}

				str.Append(' ', depth * 4);
				str.Append(elemName + ": " + elem.TagName + "(Level " + depth + ")");
				returnStr.AppendLine(str.ToString());

				if (elem.CanHaveChildren)
				{
					PrintDom(elem.Children, returnStr, depth + 1);
				}

				str.Remove(0, str.Length);
			}

			return(returnStr.ToString());
		}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Community Additions

ADD
Show:
© 2014 Microsoft