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HotSpotCollection.RemoveAt(Int32) Metode

Definisi

Ruang nama:
System.Web.UI.WebControls
Rakitan:
System.Web.dll

HotSpot Menghapus objek di lokasi indeks yang ditentukan dari koleksi.

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

Parameter

index
Int32

Indeks array untuk menghapus HotSpot objek.

Contoh

Contoh kode berikut menunjukkan cara menambahkan dua CircleHotSpot objek secara terprogram ke ImageMap kontrol. Setelah dua CircleHotSpot objek ditambahkan ke HotSpotCollection koleksi, RemoveAt metode ini digunakan untuk menghapus objek yang terletak di indeks pertama dalam koleksi. Agar contoh ini berfungsi dengan benar, Anda harus menyediakan gambar Anda sendiri untuk ImageUrl properti dan memperbarui jalur ke gambar dengan tepat sehingga aplikasi dapat menemukannya.

<%@ page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  
  void Page_Load (Object sender, EventArgs e)
  {
    // Programmatically create a CircleHotSpot object.
    CircleHotSpot Circle1 = new CircleHotSpot();
    Circle1.HotSpotMode = HotSpotMode.Navigate;
    Circle1.NavigateUrl = "http://www.tailspintoys.com";
    Circle1.X = 145;
    Circle1.Y = 120;
    Circle1.Radius = 75;
    Circle1.AlternateText = "Shop for toys";

    // Programmatically create a second CircleHotSpot object.
    CircleHotSpot Circle2 = new CircleHotSpot();
    Circle2.HotSpotMode = HotSpotMode.Navigate;
    Circle2.NavigateUrl = "http://www.cohowinery.com";
    Circle2.X = 145;
    Circle2.Y = 290;
    Circle2.Radius = 75;
    Circle2.AlternateText = "Shop for wine";

    // Add the HotSpot objects to the ImageMap's 
    // HotSpotCollection.            
    Shop.HotSpots.Add(Circle1);
    Shop.HotSpots.Add(Circle2);

    // Use the RemoveAt method to delete the HotSpot 
    // object at the first index in HotSpotCollection.
    Shop.HotSpots.RemoveAt(0);
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
  <title>HotSpotCollection.RemoveAt Example</title>
</head>
  <body>
    <form id="Form1" runat="server">
    
      <h3>HotSpotCollection.RemoveAt Example</h3>
      
      <h4>Shopping Choices:</h4>
      
      <asp:imagemap id="Shop"           
        imageurl="Images/ShopChoice.jpg"
        alternatetext="Shopping choices" 
        runat="Server">
      </asp:imagemap>
      
    </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">
<script runat="server">
  
  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    
    ' Programmatically create a CircleHotSpot object.
    Dim Circle1 As New CircleHotSpot
    Circle1.HotSpotMode = HotSpotMode.Navigate
    Circle1.NavigateUrl = "http://www.tailspintoys.com"
    Circle1.X = 145
    Circle1.Y = 120
    Circle1.Radius = 75
    Circle1.AlternateText = "Shop for toys"
           
    ' Programmatically create a second CircleHotSpot object.
    Dim Circle2 As New CircleHotSpot
    Circle2.HotSpotMode = HotSpotMode.Navigate
    Circle2.NavigateUrl = "http://www.cohowinery.com"
    Circle2.X = 145
    Circle2.Y = 290
    Circle2.Radius = 75
    Circle2.AlternateText = "Shop for wine"
    
    ' Add the HotSpot objects to the ImageMap's 
    ' HotSpotCollection.            
    Shop.HotSpots.Add(Circle1)
    Shop.HotSpots.Add(Circle2)
    
    ' Use the RemoveAt method to delete the HotSpot 
    ' object at the first index in HotSpotCollection.
    Shop.HotSpots.RemoveAt(0)
    
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
  <title>HotSpotCollection.RemoveAt Example</title>
</head>
  <body>
    <form id="Form1" runat="server">
    
      <h3>HotSpotCollection.RemoveAt Example</h3>
      
      <h4>Shopping Choices:</h4>
      
      <asp:imagemap id="Shop"           
        imageurl="Images/ShopChoice.jpg"
        alternatetext="Shopping choices" 
        runat="Server">
      </asp:imagemap>
      
    </form>      
  </body>
</html>

Keterangan

Metode RemoveAt menghapus HotSpot objek di lokasi indeks yang ditentukan dari koleksi. Untuk menghapus objek tertentu HotSpot dari koleksi berdasarkan nama, gunakan Remove metode .

Untuk menambahkan objek baru HotSpot ke koleksi, gunakan Add metode atau Insert .

Berlaku untuk

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