ASPxTrackBar.Step Property
Gets or sets the minimum distance drag handles can be moved.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v19.2.dll
Declaration
[DefaultValue(typeof(decimal), "2")]
public decimal Step { get; set; }
<DefaultValue(GetType(Decimal), "2")>
Public Property Step As Decimal
Property Value
Type |
Default |
Description |
Decimal |
"2" |
An Decimal value that is the step value of the track bar.
|
This property is a wrapper of the TrackBarProperties.Step property.
Example
The code sample below demonstrates how you can use the ASPxTrackBar control to specify a filter condition for the ASPxGridView control.
Handle the ASPxClientTrackBar.PositionChanging event to update label content that displays the currently selected range. The ASPxClientTrackBar.PositionChanged event handler applies the specified filter to the grid by using the ASPxClientGridView.ApplyFilter method. Note that the ASPxTrackBar.ValueChangedDelay property specifies the time interval between when a user changes the editor’s value and when the filter is applied.
The image below shows the result.
function initLbRange() {
lbRange.SetText('$' + tbSale.GetPositionStart() + ',000 - $' + tbSale.GetPositionEnd() + ',000');
updateGrid();
};
function updateLbRange(s, e) {
lbRange.SetText('$' + e.newPositionStart + ',000 - $' + e.newPositionEnd + ',000');
};
function updateGrid() {
var filterCondition = "[Sale] > " + tbSale.GetPositionStart() * 1000
+ " AND [Sale] < " + tbSale.GetPositionEnd() * 1000;
grid.ApplyFilter(filterCondition);
};
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" Theme="Glass"%>
...
<dx:ASPxTrackBar ID="TbSale" runat="server" AllowRangeSelection="True"
LargeTickInterval="100" MaxValue="500" MinValue="100" PositionEnd="500"
PositionStart="100" ScalePosition="LeftOrTop" Step="10"
ClientInstanceName="tbSale" LargeTickEndValue="500" LargeTickStartValue="100"
ValueChangedDelay="1000" ValueToolTipPosition="None" Width="300px">
<ClientSideEvents Init="initLbRange" PositionChanging="updateLbRange"
PositionChanged="updateGrid" />
</dx:ASPxTrackBar>
<dx:ASPxLabel ID="LbRange" runat="server" Text="" ClientInstanceName="lbRange">
</dx:ASPxLabel>
<dx:ASPxGridView ID="Grid" runat="server" AutoGenerateColumns="False"
DataSourceID="AccessDataSource1" ClientInstanceName="grid">
<Columns>
<dx:GridViewDataTextColumn FieldName="TitleOfCourtesy" VisibleIndex="0">
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn FieldName="FirstName" VisibleIndex="1">
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn FieldName="LastName" VisibleIndex="2">
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn FieldName="Sale" VisibleIndex="3">
<PropertiesTextEdit DisplayFormatString="c" />
</dx:GridViewDataTextColumn>
</Columns>
</dx:ASPxGridView>
<asp:AccessDataSource ID="AccessDataSource1" runat="server"
DataFile="~/App_Data/Employees.mdb"
SelectCommand="SELECT [TitleOfCourtesy], [FirstName], [LastName], [Sale] FROM [Employees]">
</asp:AccessDataSource>
See Also