Table.CreateControlCollection Método

  • Referência

Definição

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Cria um novo objeto ControlCollection para conter os controles TableRow do controle Table atual.

protected:
 override System::Web::UI::ControlCollection ^ CreateControlCollection();
protected override System.Web.UI.ControlCollection CreateControlCollection ();
override this.CreateControlCollection : unit -> System.Web.UI.ControlCollection
Protected Overrides Function CreateControlCollection () As ControlCollection

Retornos

ControlCollection

Um objeto ControlCollection para conter os controles TableRow do controle Table atual.

Exemplos

O exemplo de código a seguir demonstra como substituir o CreateControlCollection método em um controle de servidor personalizado para que ele sempre retorne uma nova instância da EmptyControlCollection classe para o Table.

<%@ Register TagPrefix="aspSample" 
    Namespace="Samples.AspNet.CS.Controls" %>
<%@ 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 id="Head2" runat="server">
    <title>Custom Table - CreateControlCollection - C# Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom Table - CreateControlCollection - C# Example</h3>

    <aspSample:CustomTableCreateControlCollection runat="server"
      id="Table1" GridLines="Both" CellPadding="4">
      <asp:TableRow>
        <asp:TableCell>Row 0, Col 0</asp:TableCell>
        <asp:TableCell>Row 0, Col 1</asp:TableCell>
      </asp:TableRow>
      <asp:TableRow>
        <asp:TableCell>Row 1, Col 0</asp:TableCell>
        <asp:TableCell>Row 1, Col 1</asp:TableCell>
      </asp:TableRow>
    </aspSample:CustomTableCreateControlCollection>

    </div>
    </form>
</body>
</html>

<%@ Register TagPrefix="aspSample" 
    Namespace="Samples.AspNet.VB.Controls" %>
<%@ 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 id="Head2" runat="server">
    <title>Custom Table - CreateControlCollection - VB Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom Table - CreateControlCollection - VB Example</h3>

    <aspSample:CustomTableCreateControlCollection runat="server"
      id="Table1" GridLines="Both" CellPadding="4">
      <asp:TableRow>
        <asp:TableCell>Row 0, Col 0</asp:TableCell>
        <asp:TableCell>Row 0, Col 1</asp:TableCell>
      </asp:TableRow>
      <asp:TableRow>
        <asp:TableCell>Row 1, Col 0</asp:TableCell>
        <asp:TableCell>Row 1, Col 1</asp:TableCell>
      </asp:TableRow>
    </aspSample:CustomTableCreateControlCollection>

    </div>
    </form>
</body>
</html>

using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, 
        Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomTableCreateControlCollection : Table
    {
        protected override ControlCollection CreateControlCollection()
        {
            // Return a new ControlCollection
            return new ControlCollection(this);
        }
    }
}

Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, _
        Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public Class CustomTableCreateControlCollection
        Inherits Table

        Protected Overrides Function CreateControlCollection() As ControlCollection
            ' Return a new ControlCollection
            Return New ControlCollection(Me)
        End Function
    End Class
End Namespace

Comentários

Esse método é usado principalmente por desenvolvedores de controle ao derivar uma classe personalizada de um Table controle.

Esse método substitui a CreateControlCollection implementação da classe base Control . Para um Table controle, o CreateControlCollection sempre retorna um ControlCollection que só pode conter TableRow controles do controle atual Table .

Aplica-se a

Confira também