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HtmlElementInsertionOrientation Enumeration

Defines values that describe where to insert a new element when using InsertAdjacentElement.

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

public enum HtmlElementInsertionOrientation

Member nameDescription
BeforeBeginInsert the element before the current element.
AfterBeginInsert the element after the current element, but before all other content in the current element.
BeforeEndInsert the element after the current element.
AfterEndInsert the element after the current element, but after all other content in the current element.

The following code example inserts a DIV element into the top of every page that users view outside of the ADatum.com server. The example requires that your form contains a WebBrowser control named WebBrowser1. Your example must also import the namespace System.Text.RegularExpressions.


		public void AddDivMessage()
		{
			Uri currentUri = new Uri(webBrowser1.Url.ToString());
			String hostName = null;

			// Ensure we have a host name, and not just an IP, against which to test.
			if (!(currentUri.HostNameType == UriHostNameType.Dns))
			{
				DnsPermission permit = new DnsPermission(System.Security.Permissions.PermissionState.Unrestricted);
				permit.Assert();

				IPHostEntry hostEntry = System.Net.Dns.GetHostEntry(currentUri.Host);
				hostName = hostEntry.HostName;
			} else {
				hostName = currentUri.Host;
			}

			if (!hostName.Contains("adatum.com"))
			{
				AddTopPageMessage("You are viewing a web site other than ADatum.com. " +
					"Please exercise caution, and ensure your Web surfing complies with all " +
					"corporate regulations as laid out in the company handbook.");
			}
		}

		private void AddTopPageMessage(String message)
		{
			if (webBrowser1.Document != null) 
			{
				HtmlDocument doc = webBrowser1.Document;

                // Do not insert the warning again if it already exists. 
                HtmlElementCollection returnedElems = doc.All.GetElementsByName("ADatumWarningDiv");
                if ((returnedElems != null) && (returnedElems.Count > 0)) 
				{
                    return;
				}

                HtmlElement divElem = doc.CreateElement("DIV");
                divElem.Name = "ADatumWarningDiv";
                divElem.Style = "background-color:black;color:white;font-weight:bold;width:100%;";
                divElem.InnerText = message;

                divElem = doc.Body.InsertAdjacentElement(HtmlElementInsertionOrientation.AfterBegin, divElem);
			}
		}


.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.

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