您的位置：首页 > 编程语言 > ASP

Web Server Controls->ASP.NET RadioButtonList Control

2007-03-27 09:56 471 查看

Definition and Usage

The RadioButtonList control is used to create a group of radio buttons.

Each selectable item in a RadioButtonList control is defined by a ListItem element!

Tip: This control supports data binding!

Properties

Property	Description
AutoPostBack	A Boolean value that specifies whether the form should be posted immediately after the index of the selected item has changed or not. Default is false
CellPadding	The space, in pixels, between the cell walls and the radio button group
DataSource	The data source to use
DataTextField	A field in the data source to be displayed in the radio button group
DataValueField	A field in the data source that specifies the value of each selectable item in the radio button group
id	A unique id for the control
OnSelectedIndexChanged	The name of the function to be executed when the index of the selected item has changed
RepeatColumns	The number of columns to use when displaying the radio button group. Default is "1"
RepeatDirection	Specifies whether the radio button group should be repeated horizontally or vertically. Legal values are "Horizontal" and "Vertical". Default is Vertical
RepeatLayout	The layout of the radio button group. Can be "Table" or "Flow". Default is Table
runat	Specifies that the control is a server control. Must be set to "server"
TextAlign	On which side of the radio button the text should appear (right or left)

Examples

RadiobuttonList
ASPX Source:

<script runat="server">
Sub submit(sender As Object, e As EventArgs)
label1.Text="You selected " & radiolist1.SelectedItem.Text
End Sub
</script>

<html>
<body>

<form runat="server">
<asp:RadioButtonList id="radiolist1" runat="server">
<asp:ListItem selected="true">Item 1</asp:ListItem>
<asp:ListItem>Item 2</asp:ListItem>
<asp:ListItem>Item 3</asp:ListItem>
<asp:ListItem>Item 4</asp:ListItem>
</asp:RadioButtonList>
<br />
<asp:Button text="Submit" OnClick="submit" runat="server"/>
<p><asp:Label id="Label1" runat="server"/></p>
</form>

</body>
</html>

Output Result:

Item 1
Item 2
Item 3
Item 4

If you select the RadioButtonList "Item 3" and then click the button "Submit", it will show:

Item 1

Item 2

Item 3

Item 4

You selected Item 3

In this example we declare one RadioButtonList control, one Button control, and one Label control in an .aspx file. Then we create an event handler for the Click event which displays some text and the selected item, in a Label control.

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签：

相关文章推荐

新的分享

章节导航