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Calendar.FirstDayOfWeek Property

Gets or sets the day of the week to display in the first day column of the Calendar control.

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

'Declaration
Public Property FirstDayOfWeek As FirstDayOfWeek
'Usage
Dim instance As Calendar 
Dim value As FirstDayOfWeek 

value = instance.FirstDayOfWeek

instance.FirstDayOfWeek = value
<asp:Calendar FirstDayOfWeek="FirstDayOfWeek" />

Property Value

Type: System.Web.UI.WebControls.FirstDayOfWeek
One of the FirstDayOfWeek values. The default is Default, which indicates that the day specified in the system setting is used.

ExceptionCondition
ArgumentOutOfRangeException

The date specified is not one of the FirstDayOfWeek values.

Use the FirstDayOfWeek property to specify the day of the week to display in the first day column of the Calendar control. This property is set with one of the FirstDayOfWeek enumeration values. You can specify any day of the week or FirstDayOfWeek.Default, which indicates that the date is determined by the system settings.

TopicLocation
How to: Customize Calendar Web Server Control AppearanceBuilding ASP .NET Web Applications
How to: Customize Calendar Web Server Control AppearanceBuilding ASP .NET Web Applications

The following code example demonstrates how to use the FirstDayOfWeek property to set the first day column to Monday.

<%@ 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>Calendar Example</title>
</head>
<body>

   <form id="form1" runat="server">

      <h3>Calendar Example</h3>

      <asp:Calendar id="calendar1" runat="server"
           FirstDayOfWeek="Monday"/>

   </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" >
   <script runat="server" >

      Sub Selection_Change(sender as Object, e As EventArgs)

         ' Set the first day of the week.
         Calendar1.FirstDayOfWeek = CType(DayList.SelectedIndex, _
            System.Web.UI.WebControls.FirstDayOfWeek)

      End Sub

   </script>

<head runat="server">
    <title> Calendar FirstDayOfWeek Example </title>
</head>
<body>

   <form id="form1" runat="server">

      <h3> Calendar FirstDayOfWeek Example </h3>

      Select the first day of the week.

      <br /><br /> 

      <asp:Calendar id="Calendar1"
           ShowGridLines="True" 
           ShowTitle="True"
           runat="server"/>

      <br /><br />

      <table cellpadding="5">

         <tr>

            <td>

               First day of the week:

            </td>

         </tr>

         <tr>

            <td>

               <asp:DropDownList id="DayList"
                    AutoPostBack="True"
                    OnSelectedIndexChanged="Selection_Change"
                    runat="server">

                  <asp:ListItem> Sunday </asp:ListItem>
                  <asp:ListItem> Monday </asp:ListItem>
                  <asp:ListItem> Tuesday </asp:ListItem>
                  <asp:ListItem> Wednesday </asp:ListItem>
                  <asp:ListItem> Thursday </asp:ListItem>
                  <asp:ListItem> Friday </asp:ListItem>
                  <asp:ListItem> Saturday </asp:ListItem>
                  <asp:ListItem Selected="True"> Default </asp:ListItem>

               </asp:DropDownList>

            </td>

         </tr>

      </table>  

   </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, 1.1, 1.0
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