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Panel.HorizontalAlign Property

Gets or sets the horizontal alignment of the contents within the panel.

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

public virtual HorizontalAlign HorizontalAlign { get; set; }
<asp:Panel HorizontalAlign="HorizontalAlign" />

Property Value

Type: System.Web.UI.WebControls.HorizontalAlign
One of the HorizontalAlign values. The default is NotSet.

ExceptionCondition
ArgumentOutOfRangeException

The horizontal alignment is not one of the HorizontalAlign values.

Use this property to specify the alignment of the elements in the Panel.

TopicLocation
How to: Add Panel Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications
How to: Add Panel Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications

The following example illustrates how to right-align or left-align the controls within the Panel.

NoteNote

The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.

<%@ 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>Panel Example</title>
<script language="C#" runat="server">

    void Page_Load(Object sender, EventArgs e) {
       Label l = new Label();
       l.Text = "This panel contains a label control.";
       Panel1.Controls.Add(l);
    }

    void Button1_Click(Object sender, EventArgs e) {
       if (Panel1.HorizontalAlign == HorizontalAlign.Left) {
          Panel1.HorizontalAlign = HorizontalAlign.Right;
          Button1.Text = "Left justify text within Panel";
       } 
       else {
          Panel1.HorizontalAlign = HorizontalAlign.Left;
          Button1.Text = "Right justify text within Panel";
       }
    }
    </script>

 </head>
 <body>
    <h3>Panel Example</h3>
    <form id="form1" runat="server">

       <asp:Panel id="Panel1" Height="200" Width="100" BackColor="Gainsboro"
            Wrap="True" HorizontalAlign="Right" runat="server"/>

       <br />
       <asp:Button id="Button1" OnClick="Button1_Click"
            Text="Left justify text within panel" runat="server"/>

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

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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