View.Deactivate Ereignis

Definition

Tritt ein, wenn das aktuelle aktive View-Steuerelement inaktiv wird.Occurs when the current active View control becomes inactive.

public:
 event EventHandler ^ Deactivate;
public event EventHandler Deactivate;
member this.Deactivate : EventHandler 
Public Custom Event Deactivate As EventHandler 

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie ein Ereignishandler für das Deactivate -Ereignis View eines-Steuer Elements angegeben und codiert wird.The following code example demonstrates how to specify and code an event handler for the Deactivate event of a View control. Wenn sich die aktive Ansicht ändert, wird dem Benutzer eine Meldung angezeigt, die View das Steuerelement angibt Activate , das das View Ereignis ausgelöst hat, Deactivate und das Steuerelement, das das Ereignis ausgelöst hat.When the active view changes, a message is displayed to the user specifying the View control that raised the Activate event and the View control that raised the Deactivate event.


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>View.Activate Event Example</title>

    <script runat="server">

        protected void Index_Changed(object sender, EventArgs e)
        {
            // Set the active view to
            // the view selected by the user.
            String str = ViewListBox.SelectedItem.Text;
            switch (str)
            {
                case "DefaultView":
                    MultiView1.SetActiveView(DefaultView);
                    break;
                case "NewsView":
                    MultiView1.SetActiveView(NewsView);
                    break;
                case "ShoppingView":
                    MultiView1.SetActiveView(ShoppingView);
                    break;
            }
        }

        // The handler for the DefaultView's Activate event.
        protected void DefaultView_Activate(object sender, EventArgs e)
        {
            // Notify the user that the event was raised.
            ActivateLabel.Text = "The Activate event was raised for the DefaultView.";
        }

        // The handler for the DefaultView's Deactivate event.
        protected void DefaultView_Deactivate(object sender, EventArgs e)
        {
            // Notify the user that the event was raised.
            DeactivateLabel.Text = "The Deactivate event was raised for the DefaultView.";
        }

        // The handler for the ShoppingView's Activate event.
        protected void ShoppingView_Activate(object sender, EventArgs e)
        {
            // Notify the user that the event was raised.
            ActivateLabel.Text = "The Activate event was raised for the ShoppingView.";
        }

        // The handler for the ShoppingView's Deactivate event.
        protected void ShoppingView_Deactivate(object sender, EventArgs e)
        {
            // Notify the user that the event was raised.
            DeactivateLabel.Text = "The Deactivate event was raised for the ShoppingView.";
        }

        // The handler for the NewsView's Activate event.
        protected void NewsView_Activate(object sender, EventArgs e)
        {
            // Notify the user that the event was raised.
            ActivateLabel.Text = "The Activate event was raised for the NewsView.";
        }
        // The handler for the NewsView's Deactivate event.
        protected void NewsView_Deactivate(object sender, EventArgs e)
        {
            // Notify the user that the event was raised.
            DeactivateLabel.Text = "The Deactivate event was raised for the NewsView.";
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                MultiView1.SetActiveView(DefaultView);
            }
        }
    </script>

</head>
<body>
    <form id="Form1" runat="server">
        <h3>
            View Activate and Deactivate Events Example</h3>
        <h4>
            Select a view to display in a MultiView control:</h4>
        <asp:ListBox ID="ViewListBox" Rows="1" SelectionMode="Single" AutoPostBack="True"
            OnSelectedIndexChanged="Index_Changed" runat="Server">
            <asp:ListItem Value="0">DefaultView</asp:ListItem>
            <asp:ListItem Value="1">NewsView</asp:ListItem>
            <asp:ListItem Value="2">ShoppingView</asp:ListItem>
        </asp:ListBox><br />
        <br />
        <hr />
        <asp:MultiView ID="MultiView1" runat="Server">
            <asp:View ID="DefaultView" OnActivate="DefaultView_Activate" OnDeactivate="DefaultView_Deactivate"
                runat="Server">
                <asp:Panel ID="DefaultPanel1" Width="250px" BackColor="#C0C0FF" BorderColor="#404040"
                    BorderStyle="Double" runat="Server">
                    <asp:Label ID="DefaultLabel1" Font-Bold="true" Font-Size="20" Text="The Default View"
                        runat="Server" AssociatedControlID="DefaultView">
                    </asp:Label>
                </asp:Panel>
            </asp:View>
            <asp:View ID="NewsView" OnActivate="NewsView_Activate" OnDeactivate="NewsView_Deactivate"
                runat="Server">
                <asp:Panel ID="NewsPanel1" Width="250px" BackColor="#C0FFC0" BorderColor="#404040"
                    BorderStyle="Double" runat="Server">
                    <asp:Label ID="NewsLabel1" Font-Bold="true" Font-Size="20" Text="The News View" runat="Server"
                        AssociatedControlID="NewsView">                    
                    </asp:Label>
                </asp:Panel>
            </asp:View>
            <asp:View ID="ShoppingView" OnActivate="ShoppingView_Activate" OnDeactivate="ShoppingView_Deactivate"
                runat="Server">
                <asp:Panel ID="ShoppingPanel1" Width="250px" BackColor="#FFFFC0" BorderColor="#404040"
                    BorderStyle="Double" runat="Server">
                    <asp:Label ID="ShoppingLabel1" Font-Bold="true" Font-Size="20" Text="The Shopping View"
                        runat="Server" AssociatedControlID="ShoppingView">
                    </asp:Label>
                </asp:Panel>
            </asp:View>
        </asp:MultiView><br />
        <br />
        <asp:Label ID="ActivateLabel" BackColor="#ffff66" runat="Server">
        </asp:Label><br />
        <asp:Label ID="DeactivateLabel" BackColor="#ffff66" runat="Server">
        </asp:Label>
    </form>
</body>
</html>

<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>View.Activate Event Example</title>

    <script runat="server">

        Sub Index_Changed(ByVal Sender As Object, ByVal e As EventArgs)
            ' Set the active view to
            ' the view selected by the user.
            Dim str As String = ViewListBox.SelectedItem.Text
            Select Case (str)
                Case "DefaultView"
                    MultiView1.SetActiveView(DefaultView)
                Case "NewsView"
                    MultiView1.SetActiveView(NewsView)
                Case "ShoppingView"
                    MultiView1.SetActiveView(ShoppingView)
            End Select

        End Sub

        ' The handler for the DefaultView's Activate event.
        Sub DefaultView_Activate(ByVal sender As Object, ByVal e As EventArgs)
            ' Notify the user that the event was raised.
            ActivateLabel.Text = "The Activate event was raised for the DefaultView."
        End Sub

        ' The handler for the DefaultView's Deactivate event.
        Sub DefaultView_Deactivate(ByVal sender As Object, ByVal e As EventArgs)
            ' Notify the user that the event was raised.
            DeactivateLabel.Text = "The Deactivate event was raised for the DefaultView."
        End Sub

        ' The handler for the ShoppingView's Activate event.
        Sub ShoppingView_Activate(ByVal sender As Object, ByVal e As EventArgs)
            ' Notify the user that the event was raised.
            ActivateLabel.Text = "The Activate event was raised for the ShoppingView."
        End Sub

        ' The handler for the ShoppingView's Deactivate event.
        Sub ShoppingView_Deactivate(ByVal sender As Object, ByVal e As EventArgs)
            ' Notify the user that the event was raised.
            DeactivateLabel.Text = "The Deactivate event was raised for the ShoppingView."
        End Sub

        ' The handler for the NewsView's Activate event.
        Sub NewsView_Activate(ByVal sender As Object, ByVal e As EventArgs)
            ' Notify the user that the event was raised.
            ActivateLabel.Text = "The Activate event was raised for the NewsView."
        End Sub

        ' The handler for the NewsView's Deactivate event.
        Sub NewsView_Deactivate(ByVal sender As Object, ByVal e As EventArgs)
            ' Notify the user that the event was raised.
            DeactivateLabel.Text = "The Deactivate event was raised for the NewsView."
        End Sub

        Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
            If Not (IsPostBack) Then
                MultiView1.SetActiveView(DefaultView)
            End If
        End Sub
    </script>

</head>
<body>
    <form id="Form1" runat="server">
        <h3>
            View Activate and Deactivate Events Example</h3>
        <h4>
            Select a view to display in a MultiView control:</h4>
        <asp:ListBox ID="ViewListBox" Rows="1" SelectionMode="Single" AutoPostBack="True"
            OnSelectedIndexChanged="Index_Changed" runat="Server">
            <asp:ListItem Value="0">DefaultView</asp:ListItem>
            <asp:ListItem Value="1">NewsView</asp:ListItem>
            <asp:ListItem Value="2">ShoppingView</asp:ListItem>
        </asp:ListBox><br />
        <br />
        <hr />
        <asp:MultiView ID="MultiView1" runat="Server">
            <asp:View ID="DefaultView" OnActivate="DefaultView_Activate" OnDeactivate="DefaultView_Deactivate"
                runat="Server">
                <asp:Panel ID="DefaultPanel1" Width="250px" BackColor="#C0C0FF" BorderColor="#404040"
                    BorderStyle="Double" runat="Server">
                    <asp:Label ID="DefaultLabel1" Font-Bold="true" Font-Size="20" Text="The Default View"
                        runat="Server" AssociatedControlID="DefaultView">
                    </asp:Label>
                </asp:Panel>
            </asp:View>
            <asp:View ID="NewsView" OnActivate="NewsView_Activate" OnDeactivate="NewsView_Deactivate"
                runat="Server">
                <asp:Panel ID="NewsPanel1" Width="250px" BackColor="#C0FFC0" BorderColor="#404040"
                    BorderStyle="Double" runat="Server">
                    <asp:Label ID="NewsLabel1" Font-Bold="true" Font-Size="20" Text="The News View" runat="Server"
                        AssociatedControlID="NewsView">                    
                    </asp:Label>
                </asp:Panel>
            </asp:View>
            <asp:View ID="ShoppingView" OnActivate="ShoppingView_Activate" OnDeactivate="ShoppingView_Deactivate"
                runat="Server">
                <asp:Panel ID="ShoppingPanel1" Width="250px" BackColor="#FFFFC0" BorderColor="#404040"
                    BorderStyle="Double" runat="Server">
                    <asp:Label ID="ShoppingLabel1" Font-Bold="true" Font-Size="20" Text="The Shopping View"
                        runat="Server" AssociatedControlID="ShoppingView">
                    </asp:Label>
                </asp:Panel>
            </asp:View>
        </asp:MultiView><br />
        <br />
        <asp:Label ID="ActivateLabel" BackColor="#ffff66" runat="Server">
        </asp:Label><br />
        <asp:Label ID="DeactivateLabel" BackColor="#ffff66" runat="Server">
        </asp:Label>
    </form>
</body>
</html>

Hinweise

Das Deactivate -Ereignis wird ausgelöst, wenn das View aktuelle aktive Steuerelement inaktiv wird.The Deactivate event is raised when the current active View control becomes inactive. Ein View Steuerelement wird inaktiv, wenn sich ActiveViewIndex der Wert der- SetActiveView Eigenschaft ändert oder wenn die-Methode View aufgerufen wird, um ein anderes Steuerelement anzugeben.A View control becomes inactive when the value of the ActiveViewIndex property changes or the SetActiveView method is called to specify a different View control. View1 Wenn beispielsweise die aktive Ansicht innerhalb eines View1 ActiveViewIndex View2 MultiView -Steuer Elements ist und die-Eigenschaft in angeben geändert wird Deactivate , wird das-Ereignis für Activate ausgelöst, und das-Ereignis wird ausgelöst für View2.For example, if View1 is the active view within a MultiView control, when the ActiveViewIndex property changes to specify View2, the Deactivate event is raised for View1 and the Activate event is raised for View2.

Gilt für:

Siehe auch