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The drop down lists, check boxes and radio buttons are supported by SelectionList Control
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Selection Lists
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The data feature of the SelectionList control is very similar to the List control. However, the SelectionList control differs in that it is used exclusively to represent selection in a form, and requires another control, such as a Command control, to submit the selection. In addition to single selection, the SelectionList control supports multiple selection, rendering a UI appropriate for the device.
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SelectionList Styles
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Similar to a List control, the SelectionList control offer several rendering style for devices that support these rendering styles. The rendering style, found through the SelectType property, also affect whether or not the control uses single or multiple selection. Valid setting for this property come from the ListSelectType enumeration, and include the following.
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| Type |
Selection type |
Description |
| DropDown |
Single |
The list is shown as a drop-down list box.
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| ListBox |
Single
| The list is shown as a list box.
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| Radio |
Single
| The list is shown as a set of option buttons.
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| MultiSelectListBox |
Multiple
| The list is shown as a list box.
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| CheckBox |
Multiple
| The list is shown as a set of check boxes.
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The SelectionList Example
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Here we use the SelectionList to let the user select a televisions. This can be viewed as in this mobile page given below:
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<%@ Page
Inherits=
"System.Web.UI.MobileControls.MobilePage"%>
<%@ Register
TagPrefix="Mobile"
Namespace="System.Web.UI.MobileControls"
Assembly="System.Web.Mobile" %>
<script runat="server">
Sub Tele_Click(sender as Object, e as EventArgs)
ActiveForm=f2
t1.text=telev.Selection.Value
End Sub
</script>
<Mobile:Form id="f1" runat="server">
<Mobile:SelectionList runat="server" id="tele" >
<Item Text="Sumsung" Value="$30,000" />
<Item Text="LG" Value="$32,000" />
<Item Text="BPL" Value="$34,000" />
</Mobile:SelectionList>
<Mobile:Command runat="server"
OnClick="Tele_Click" Text="Submit" />
</Mobile:Form>
<Mobile:Form id="f2" runat="server">
<Mobile:Label id="t1" runat="server" />
</Mobile:Form>
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When this page is displayed on a mobile device, the navigation and display functions of the page will be compiled differently for different devices with different display characteristics. Fore some devices, like a handheld PC, it might display a dropdown list to choose from. For a cell phone it might display a list of options to select from.
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