HttpApplicationState.RemoveAt(Int32) HttpApplicationState.RemoveAt(Int32) HttpApplicationState.RemoveAt(Int32) HttpApplicationState.RemoveAt(Int32) Method

定義

HttpApplicationState オブジェクトをコレクションからインデックスを使用して削除します。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)

パラメーター

index
Int32 Int32 Int32 Int32

削除される項目のコレクション内の位置。The position in the collection of the item to remove.

次のコード例は、2つのアプリケーション変数をコレクションに挿入し、 RemoveAtメソッドを使用してカスタムHttpApplicationStateオブジェクトの最初の変数を削除する方法を示しています。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>

適用対象