ASPxClientListEditItem.value Property
In This Article
Gets the item’s associated value.
#Declaration
TypeScript
value: any
#Property Value
Type | Description |
---|---|
any | An object that represents the value associated with the item. |
#Remarks
#Example
Web Forms:
<dx:ASPxListBox ID="ASPxListBox1" runat="server" Theme="Office365" ClientInstanceName="listBox">
<Items>
<dx:ListEditItem Text="Item1" Value="10" />
<dx:ListEditItem Text="Item2" Value="20" />
<dx:ListEditItem Text="Item3" Value="30" />
</Items>
</dx:ASPxListBox>
<br />
<dx:ASPxButton ID="ASPxButton1" runat="server" AutoPostBack="False" Text="Get Item's Info" Theme="Office365">
<ClientSideEvents Click="function(s, e) {
var item = listBox.GetSelectedItem();
memo.SetText('Text: ' + item.text + '\n' + 'Value: ' + item.value + '\n' + 'Selected: ' + item.selected + '\n' + 'Index: ' + item.index );
}" />
</dx:ASPxButton>
<br /><br />
<dx:ASPxMemo ClientInstanceName="memo" ID="ASPxMemo1" runat="server" Height="71px" Width="170px"></dx:ASPxMemo>
MVC:
@Html.DevExpress().ListBox(settings => {
settings.Name = "listBox";
settings.Properties.Items.Add("Item1", 10);
settings.Properties.Items.Add("Item2", 20);
settings.Properties.Items.Add("Item3", 30);
}).GetHtml()
<br />
@Html.DevExpress().Button(settings => {
settings.Name = "button";
settings.Text = "Get Item's Info";
settings.ClientSideEvents.Click = "OnClick";
}).GetHtml()
<br /><br />
@Html.DevExpress().Memo(settings => {
settings.Name = "memo";
settings.Height = 90;
}).GetHtml()
#Example
The code sample below demonstrates how you can use the ASPxTrackBar control to display the wavelength range of the selected color.
The ASPxClientListEdit.SelectedIndexChanged event is handled to specify the track bar range interval. The ASPxClientTrackBar.SetPositionStart and ASPxClientTrackBar.SetPositionEnd methods specify range limits.
The image below shows the result.
function setWavelength() {
tbWavelength.SetPositionStart(colorList.GetValue());
if (colorList.GetSelectedIndex() == 0) tbWavelength.SetPositionEnd(750)
else tbWavelength.SetPositionEnd(colorList.GetItem(colorList.GetSelectedIndex() - 1).value);
label.SetText('The visible ' + colorList.GetSelectedItem().text + ' light has a wavelength in the interval '
+ tbWavelength.GetPositionStart() + ' to ' + tbWavelength.GetPositionEnd() + ' nm');
}
<dx:ASPxLabel ID="ASPxLabel1" runat="server" Font-Bold="True" Text="The colors of the visible light spectrum">
</dx:ASPxLabel>
<table>
<tr>
<td>
<dx:ASPxRadioButtonList ID="ColorList" runat="server"
ItemSpacing="3px" TextWrap="False" ClientInstanceName="colorList">
<ItemImage Height="12px" Width="12px">
</ItemImage>
<ClientSideEvents SelectedIndexChanged="setWavelength" />
<Items>
<dx:ListEditItem Text="Red" Value="620" ImageUrl="~/Rainbow/Red.png" />
<dx:ListEditItem Text="Orange" Value="590" ImageUrl="~/Rainbow/Orange.png" />
<dx:ListEditItem Text="Yellow" Value="570" ImageUrl="~/Rainbow/Yellow.png" />
<dx:ListEditItem Text="Green" Value="495" ImageUrl="~/Rainbow/Green.png" />
<dx:ListEditItem Text="Blue" Value="450" ImageUrl="~/Rainbow/Blue.png" />
<dx:ListEditItem Text="Violet" Value="380" ImageUrl="~/Rainbow/Violet.png" />
</Items>
</dx:ASPxRadioButtonList>
</td>
<td align="center">
<dx:ASPxTrackBar ID="TbWavelength" runat="server" ShowChangeButtons="False"
LargeTickInterval="50" MaxValue="750" MinValue="380"
SmallTickFrequency="10" AllowRangeSelection="True"
ScalePosition="RightOrBottom" ClientInstanceName="tbWavelength"
ReadOnly="True" LargeTickStartValue="400">
</dx:ASPxTrackBar>
</td>
</tr>
</table>
<dx:ASPxLabel ID="ASPxLabel" runat="server" ClientInstanceName="label">
</dx:ASPxLabel>
See Also