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HotSpotCollection.RemoveAt Method

Removes the HotSpot object at the specified index location from the collection.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public void RemoveAt(
	int index
)

Parameters

index
Type: System.Int32

The array index from which to remove the HotSpot object.

The RemoveAt method removes the HotSpot object at the specified index location from the collection. To remove a specific HotSpot object from the collection by name, use the Remove method.

To add new HotSpot objects to the collection, use the Add or the Insert method.

The following code example demonstrates how to programmatically add two CircleHotSpot objects to an ImageMap control. After the two CircleHotSpot objects are added to the HotSpotCollection collection, the RemoveAt method is used to delete the object located at the first index in the collection. For this example to work correctly, you must supply your own image for the ImageUrl property and update the path to the image appropriately so that the application can locate it.

<%@ 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>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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