HtmlElementInsertionOrientation 列挙型

定義

名前空間:

System.Windows.Forms

アセンブリ:

System.Windows.Forms.dll

InsertAdjacentElement(HtmlElementInsertionOrientation, HtmlElement) の使用時に新しい要素が挿入される位置を表す値を定義します。

public enum class HtmlElementInsertionOrientation

public enum HtmlElementInsertionOrientation

type HtmlElementInsertionOrientation = 

Public Enum HtmlElementInsertionOrientation

継承

Object

ValueType

Enum

HtmlElementInsertionOrientation

フィールド

AfterBegin	1	現在の要素の後、かつ、現在の要素に含まれるその他すべてのコンテンツの前に要素を挿入します。
AfterEnd	3	現在の要素の後、かつ、現在の要素に含まれるその他すべてのコンテンツの後に要素を挿入します。
BeforeBegin	0	現在の要素の前に要素を追加します。
BeforeEnd	2	現在の要素の後に要素を追加します。

例

次のコード例では、 DIV ユーザーが ADatum.com サーバーの外部で表示するすべてのページの先頭に要素を挿入します。 この例では、フォームに "." という名前WebBrowser1のコントロールがWebBrowser含まれている必要があります。 この例では、名前空間 System.Text.RegularExpressionsもインポートする必要があります。

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);
    }
}

Private Sub AddDivMessage()
    Dim CurrentUri As New Uri(WebBrowser1.Url.ToString())
    Dim HostName As String

    ' Ensure we have a host name, and not just an IP, against which to test.
    If (Not CurrentUri.HostNameType = UriHostNameType.Dns) Then
        Dim Permit As New DnsPermission(System.Security.Permissions.PermissionState.Unrestricted)
        Permit.Assert()

        Dim HostEntry As IPHostEntry = System.Net.Dns.GetHostEntry(CurrentUri.Host)
        HostName = HostEntry.HostName
    Else
        HostName = CurrentUri.Host
    End If

    If (Not HostName.Contains("adatum.com")) Then
        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.")
    End If
End Sub

Private Sub AddTopPageMessage(ByVal Message As String)
    If (WebBrowser1.Document IsNot Nothing) Then
        With WebBrowser1.Document
            ' Do not insert the warning again if it already exists. 
            Dim ReturnedElems As HtmlElementCollection = .All.GetElementsByName("ADatumWarningDiv")
            If (Not (ReturnedElems Is Nothing) And (ReturnedElems.Count > 0)) Then
                Exit Sub
            End If

            Dim DivElem As HtmlElement = .CreateElement("DIV")
            DivElem.Name = "ADatumWarningDiv"
            DivElem.Style = "background-color:black;color:white;font-weight:bold;width:100%;"
            DivElem.InnerText = Message

            DivElem = .Body.InsertAdjacentElement(HtmlElementInsertionOrientation.AfterBegin, DivElem)
        End With
    End If
End Sub