HttpApplicationState.RemoveAt(Int32) Méthode

Définition

Supprime un objet HttpApplicationState d'une collection en utilisant l'index.Removes an HttpApplicationState object from a collection by index.

public:
 void RemoveAt(int index);
public void RemoveAt (int index);
member this.RemoveAt : int -> unit
Public Sub RemoveAt (index As Integer)

Paramètres

index
Int32

Position dans la collection de l’élément à supprimer.The position in the collection of the item to remove.

Exemples

L’exemple de code suivant montre comment insérer deux variables d’application dans la collection, puis utiliser la RemoveAt méthode pour supprimer la première variable d’un HttpApplicationState objet personnalisé.The following code example demonstrates how to insert two application variables into the collection, and then use the RemoveAt method to remove the first variable in a custom HttpApplicationState object.

<%@ Page language="c#" AutoEventWireup="true" %>
<!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>HttpApplicationState - RemoveAt - C# Example</title>
    <script runat="server">
      void Page_Load(Object sender, EventArgs e) 
      {
          // Add two new application state variables.
          Application.Add("City", "Redmond");
          Application.Add("State", "WA");
        
          // Show the contents of both application state variables.
          Label1.Text = "Application.Keys[0] contains: " + Application.Keys[0].ToString();
          Label1.Text += "<br />Application.Keys[1] contains: " + Application.Keys[1].ToString();
              
          // Remove the City application state variable, which is at
          // the first index location.
          Application.RemoveAt(0);
          Label2.Text = "<br />Call:&nbsp; Application.RemoveAt(0)";
              
          // Show the contents of the application state variable,
          // in the first index location, which is now the State variable.
          Label3.Text = "<br />Application.Keys[0] contains: " + Application.Keys[0].ToString();
      }
    </script>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
            <h3>HttpApplicationState - RemoveAt - C# Example</h3>
      <asp:Label id="Label1" runat="server" /><br />
      <asp:Label id="Label2" runat="server" /><br />
      <asp:Label id="Label3" runat="server" />
    </form>
  </body>
</html>
<%@ Page language="VB" AutoEventWireup="true" %>
<!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>HttpApplicationState - RemoveAt - VB.NET Example</title>
    <script runat="server">
      Sub Page_Load(sender As Object, e As EventArgs)

          ' Add two new application state variables.
          Application.Add("City", "Redmond")
          Application.Add("State", "WA")
        
          ' Show the contents of both application state variables.
          Label1.Text = "Application.Keys(0) contains: " & Application.Keys(0).ToString()
          Label1.Text += "<br />Application.Keys(1) contains: " & Application.Keys(1).ToString()
              
          ' Remove the City application state variable, which is at
          ' the first index location.
          Application.RemoveAt(0)
          Label2.Text = "<br />Call:&nbsp; Application.RemoveAt(0)"
              
          ' Show the contents of the application state variable,
          ' in the first index location, which is now the State variable.
          Label3.Text = "<br />Application.Keys(0) contains: " & Application.Keys(0).ToString()
      End Sub
    </script>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
            <h3>HttpApplicationState - RemoveAt - VB.NET Example</h3>
      <asp:Label id="Label1" runat="server" /><br />
      <asp:Label id="Label2" runat="server" /><br />
      <asp:Label id="Label3" runat="server" />
    </form>
  </body>
</html>

S’applique à