CheckBoxList.RepeatColumns Properti

Referensi

Definisi

Ruang nama:: System.Web.UI.WebControls

Rakitan:: System.Web.dll

Penting

Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.

Mendapatkan atau mengatur jumlah kolom yang akan ditampilkan dalam CheckBoxList kontrol.

public:
 virtual property int RepeatColumns { int get(); void set(int value); };

[System.ComponentModel.Bindable(true)]
public virtual int RepeatColumns { get; set; }

public virtual int RepeatColumns { get; set; }

[<System.ComponentModel.Bindable(true)>]
member this.RepeatColumns : int with get, set

member this.RepeatColumns : int with get, set

Public Overridable Property RepeatColumns As Integer

Nilai Properti

Int32

Jumlah kolom yang akan ditampilkan dalam CheckBoxList kontrol. Defaultnya adalah 0, yang menunjukkan properti ini tidak diatur.

Atribut: BindableAttribute

Pengecualian

ArgumentOutOfRangeException

Jumlah kolom diatur ke nilai negatif.

Contoh

Contoh kode berikut menunjukkan cara menggunakan RepeatColumns properti untuk menentukan bahwa dua kolom ditampilkan dalam CheckBoxList kontrol.

Catatan

Sampel kode berikut menggunakan model kode file tunggal dan mungkin tidak berfungsi dengan benar jika disalin langsung ke file code-behind. Setiap sampel kode harus disalin ke dalam file teks kosong yang memiliki ekstensi .aspx. Untuk informasi selengkapnya tentang model kode Formulir Web, lihat ASP.NET Model Kode Halaman Formulir Web.

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

   void Check_Clicked(Object sender, EventArgs e) 
   {
      Message.Text = "Selected Item(s):<br /><br />";
      for (int i = 0; i < CheckBoxList1.Items.Count; i++)
      {
         if (CheckBoxList1.Items[i].Selected)
            Message.Text += CheckBoxList1.Items[i].Text + "<br />";
      }
   }

</script>
 
</head>
<body>
   
   <form id="form1" action="CheckBoxList.aspx" method="post" runat="server">
 
      <h3>CheckBoxList Example</h3>

      <asp:CheckBoxList id="CheckBoxList1" 
           AutoPostBack="True"
           CellPadding="5"
           CellSpacing="5"
           RepeatColumns="2"
           RepeatDirection="Vertical"
           RepeatLayout="Flow"
           TextAlign="Right"
           OnSelectedIndexChanged="Check_Clicked"
           runat="server">
 
         <asp:ListItem>Item 1</asp:ListItem>
         <asp:ListItem>Item 2</asp:ListItem>
         <asp:ListItem>Item 3</asp:ListItem>
         <asp:ListItem>Item 4</asp:ListItem>
         <asp:ListItem>Item 5</asp:ListItem>
         <asp:ListItem>Item 6</asp:ListItem>
 
      </asp:CheckBoxList>
 
      <br /><br />

      <asp:label id="Message" runat="server"/>
             
   </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" >
<head>
    <title>CheckBoxList Example</title>
<script language="VB" runat="server">

   Sub Check_Clicked(sender As Object, e As EventArgs)
      Dim i As Integer
      Message.Text = "Selected Item(s):<br /><br />"
      For i = 0 To CheckBoxList1.Items.Count - 1
         If checkboxlist1.Items(i).Selected Then
            Message.Text += checkboxlist1.Items(i).Text + "<br />"
         End If
      Next
   End Sub

</script>
 
</head>
<body>
   
   <form id="form1" action="CheckBoxList.aspx" method="post" runat="server">
 
      <h3>CheckBoxList Example</h3>

      <asp:CheckBoxList id="CheckBoxList1" 
           AutoPostBack="True"
           CellPadding="5"
           CellSpacing="5"
           RepeatColumns="2"
           RepeatDirection="Vertical"
           RepeatLayout="Flow"
           TextAlign="Right"
           OnSelectedIndexChanged="Check_Clicked"
           runat="server">
 
         <asp:ListItem>Item 1</asp:ListItem>
         <asp:ListItem>Item 2</asp:ListItem>
         <asp:ListItem>Item 3</asp:ListItem>
         <asp:ListItem>Item 4</asp:ListItem>
         <asp:ListItem>Item 5</asp:ListItem>
         <asp:ListItem>Item 6</asp:ListItem>
 
      </asp:CheckBoxList>
 
      <br /><br />

      <asp:label id="Message" runat="server"/>
             
   </form>
          
</body>
</html>


<%@ 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 runat="server">
    <title> CheckBoxList RepeatColumns Example </title>
<script runat="server">

      void Check_Clicked(Object sender, EventArgs e) 
      {

         Message.Text = "Selected Item(s):<br /><br />";

         // Iterate through the Items collection of the CheckBoxList 
         // control and display the selected items.
         for (int i=0; i<checkboxlist1.Items.Count; i++)
         {

            if (checkboxlist1.Items[i].Selected)
            {

               Message.Text += checkboxlist1.Items[i].Text + "<br />";

            }

         }

      }

      void Index_Change(Object sender, EventArgs e) 
      {

         // Set the number columns in the CheckBoxList control.
         checkboxlist1.RepeatColumns = List.SelectedIndex;

      }

   </script>
 
</head>

<body>
   
   <form id="form1" runat="server">
 
      <h3> CheckBoxList RepeatColumns Example </h3>

      Select items from the CheckBoxList.

      <br /><br />

      <asp:CheckBoxList id="checkboxlist1" 
           AutoPostBack="True"
           CellPadding="5"
           CellSpacing="5"
           RepeatColumns="2"
           RepeatDirection="Vertical"
           RepeatLayout="Table"
           TextAlign="Right"
           OnSelectedIndexChanged="Check_Clicked"
           runat="server">
 
         <asp:ListItem>Item 1</asp:ListItem>
         <asp:ListItem>Item 2</asp:ListItem>
         <asp:ListItem>Item 3</asp:ListItem>
         <asp:ListItem>Item 4</asp:ListItem>
         <asp:ListItem>Item 5</asp:ListItem>
         <asp:ListItem>Item 6</asp:ListItem>
 
      </asp:CheckBoxList>
 
      <br /><br />

      <asp:label id="Message" runat="server"/>

      <hr />

      Select the number of columns to display.

      <table cellpadding="5">

         <tr>

            <td>

               RepeatColumns:

            </td>

         </tr>

         <tr>

            <td>

               <asp:DropDownList id="List"
                    AutoPostBack="True"
                    OnSelectedIndexChanged="Index_Change"
                    runat="server">

                  <asp:ListItem>0</asp:ListItem>
                  <asp:ListItem>1</asp:ListItem>
                  <asp:ListItem Selected="True">2</asp:ListItem>
                  <asp:ListItem>3</asp:ListItem>

               </asp:DropDownList>

            </td>

         </tr>

      </table>
             
   </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" >

<head runat="server">
    <title> CheckBoxList RepeatColumns Example </title>
<script runat="server">

      Sub Check_Clicked(sender as Object, e As EventArgs) 

         Message.Text = "Selected Item(s):<br /><br />"

         ' Iterate through the Items collection of the CheckBoxList
         ' control and display the selected items.
         Dim i As Integer

         For i=0 To checkboxlist1.Items.Count - 1

            If checkboxlist1.Items(i).Selected Then

               Message.Text &= checkboxlist1.Items(i).Text & "<br />"

            End If

         Next

      End Sub

      Sub Index_Change(sender as Object, e As EventArgs) 

         ' Set the number columns in the CheckBoxList control.
         checkboxlist1.RepeatColumns = List.SelectedIndex

      End Sub

   </script>
 
</head>

<body>
   
   <form id="form1" runat="server">
 
      <h3> CheckBoxList RepeatColumns Example </h3>

      Select items from the CheckBoxList.

      <br /><br />

      <asp:CheckBoxList id="checkboxlist1" 
           AutoPostBack="True"
           CellPadding="5"
           CellSpacing="5"
           RepeatColumns="2"
           RepeatDirection="Vertical"
           RepeatLayout="Table"
           TextAlign="Right"
           OnSelectedIndexChanged="Check_Clicked"
           runat="server">
 
         <asp:ListItem>Item 1</asp:ListItem>
         <asp:ListItem>Item 2</asp:ListItem>
         <asp:ListItem>Item 3</asp:ListItem>
         <asp:ListItem>Item 4</asp:ListItem>
         <asp:ListItem>Item 5</asp:ListItem>
         <asp:ListItem>Item 6</asp:ListItem>
 
      </asp:CheckBoxList>
 
      <br /><br />

      <asp:label id="Message" runat="server"/>

      <hr />

      Select the number of columns to display.

      <table cellpadding="5">

         <tr>

            <td>

               RepeatColumns:

            </td>

         </tr>

         <tr>

            <td>

               <asp:DropDownList id="List"
                    AutoPostBack="True"
                    OnSelectedIndexChanged="Index_Change"
                    runat="server">

                  <asp:ListItem>0</asp:ListItem>
                  <asp:ListItem>1</asp:ListItem>
                  <asp:ListItem Selected="True">2</asp:ListItem>
                  <asp:ListItem>3</asp:ListItem>

               </asp:DropDownList>

            </td>

         </tr>

      </table>
             
   </form>
          
</body>

</html>

Keterangan

RepeatLayout Saat properti diatur ke Table, Anda dapat menggunakan properti ini untuk menentukan jumlah kolom yang ditampilkan dalam CheckBoxList kontrol. Jika properti ini tidak diatur, CheckBoxList kontrol akan menampilkan semua item daftar dalam satu kolom.

Berlaku untuk

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