共用方式為

CheckBoxList.TextAlign 屬性

  • 參考

定義

命名空間:
System.Web.UI.WebControls
組件:
System.Web.dll

取得或設定群組中核取方塊的文字對齊方式。

public:
 virtual property System::Web::UI::WebControls::TextAlign TextAlign { System::Web::UI::WebControls::TextAlign get(); void set(System::Web::UI::WebControls::TextAlign value); };
[System.ComponentModel.Bindable(true)]
public virtual System.Web.UI.WebControls.TextAlign TextAlign { get; set; }
public virtual System.Web.UI.WebControls.TextAlign TextAlign { get; set; }
[<System.ComponentModel.Bindable(true)>]
member this.TextAlign : System.Web.UI.WebControls.TextAlign with get, set
member this.TextAlign : System.Web.UI.WebControls.TextAlign with get, set
Public Overridable Property TextAlign As TextAlign

屬性值

TextAlign

其中一個 TextAlign 值。 預設值是 Right。

屬性
BindableAttribute

例外狀況

ArgumentOutOfRangeException

指定的標籤文字對齊不是其中一個 TextAlign 值。

範例

下列程式代碼範例示範如何使用 TextAlign 屬性來指定與複選框相關聯的文字出現在控件右側 CheckBoxList 。

注意

下列程式代碼範例使用單一檔案程式代碼模型，如果直接複製到程序代碼後置檔案，可能無法正常運作。 每個程式代碼範例都必須複製到具有.aspx擴展名的空文本檔中。 如需 Web Forms 程式代碼模型的詳細資訊，請參閱 ASP.NET 網頁代碼模型。

<%@ 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 TextAlign 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 alignment of the caption (right or left) in relation
         // to the check boxes.
         // Note that the TextAlign enumeration starts at 1 instead of 0, 
         // so the value of the SelectedIndex property cannot be used
         // directly for casting into a TextAlign enumeration.

         // In this example, the values of the TextAlign enumeration are 
         // stored in the Value property of each ListItem in the 
         // DropDownList control named List. To determine the enumeration  
         // value, retrieve the value of the Value property, convert it to
         // an Int32, and then cast it to a TextAlign enumeration.
         int EnumValue = Convert.ToInt32(List.SelectedItem.Value);

         checkboxlist1.TextAlign = (TextAlign)EnumValue;

      }

   </script>
 
</head>

<body>
   
   <form id="form1" runat="server">
 
      <h3> CheckBoxList TextAlign 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 whether to display the captions to the right or the left 
      of the check boxes.

      <table cellpadding="5">

         <tr>

            <td>

               TextAlign:

            </td>

         </tr>

         <tr>

            <td>

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

                  <asp:ListItem Value="1">Left</asp:ListItem>
                  <asp:ListItem Value="2" Selected="True">Right</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 TextAlign 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 alignment of the caption (right or left) in relation
         ' to the check boxes.
         ' Note that the TextAlign enumeration starts at 1 instead of 0, 
         ' so the value of the SelectedIndex property cannot be used
         ' directly for casting into a TextAlign enumeration.

         ' In this example, the values of the TextAlign enumeration are 
         ' stored in the Value property of each ListItem in the 
         ' DropDownList control named List. To determine the enumeration  
         ' value, retrieve the value of the Value property, convert it to
         ' an Int32, and then cast it to a TextAlign enumeration.
         Dim EnumValue As Integer = Convert.ToInt32(List.SelectedItem.Value)

         checkboxlist1.TextAlign = CType(EnumValue, TextAlign)

      End Sub

   </script>
 
</head>

<body>
   
   <form id="form1" runat="server">
 
      <h3> CheckBoxList TextAlign 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 whether to display the captions to the right or the left 
      of the check boxes.

      <table cellpadding="5">

         <tr>

            <td>

               TextAlign:

            </td>

         </tr>

         <tr>

            <td>

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

                  <asp:ListItem Value="1">Left</asp:ListItem>
                  <asp:ListItem Value="2" Selected="True">Right</asp:ListItem>

               </asp:DropDownList>

            </td>

         </tr>

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

</html>

備註

使用這個屬性可指定與複選框相關聯的文字是否出現在複選框的左邊或右邊。 如果此屬性設定 TextAlign.Right為 ，則會在複選框右側顯示文字。 如果此屬性設定為 TextAlign.Left，則會將文字顯示在複選框的左邊。

適用於

另請參閱