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Version Q2 2011 released 07/12/2011
select

Slider / Server-side API


Configure slider:
Value/SelectionStart: SelectionEnd:
Width (px): Height (px):
MinimumValue: MaximumValue:
SmallChange: LargeChange:
AnimationDuration:
Orientation:
TrackPosition:
ItemType:
Enabled: TrackMouseWheel:
ShowDragHandle: LiveDrag:
ShowDecreaseHandle: ShowIncreaseHandle:
IsSelectionRangeEnabled: IsDirectionReversed:
EnableDragRange:
Preview:

  • Server-Side API

    It is easy to configure a RadSlider control at runtime by changing the values of its server properties.

    This example demonstrates how you can use the following properties:

    • Orientation - The Orientation property defines how the slider will be displayed in the page - vertically or horizontally.
    • SmallChange - Using the SmallChange property, you can create a "discrete" slider which will change its value in the defined steps.
    • LargeChange - Using the LargeChange property, you can define what should be the change in the value of the slider when the user clicks on the track.
    • AnimationDuration - The AnimationDuration property defines how long (in milliseconds) the animation of the sliding will run.
    • Enabled - Enables or disables the RadSlider control.
    • TrackMouseWheel - Using the TrackMouseWheel property, you can define if the value of the slider should be changed when the user is using the mousewheel over the track.
    • LiveDrag - The LiveDrag property defines when the value of the RadSlider changes - while you drag the dragHandle or when you release the dragHandle.
    • IsDirectionReversed - The IsDirectionReversed property defines the position of the MinimumValue and MaximumValue.
    • Width - The Width property defines the width of the RadSlider control.
    • Height - The Height property defines the height of the RadSlider control.
    • Value - Using the Value property, you can set the initial value of the slider.
    • SelectionStart - Using the SelectionStart property, you can set the first value of the slider in case IsSelectionRangeEnabled property is set to true.
    • SelectionEnd - Using the SelectionEnd property, you can set the second value of the slider in case IsSelectionRangeEnabled property is set to true.
    • MinimumValue - The MinimumValue property defines the smallest possible value of the RadSlider.
    • MaximumValue - The MaximumValue property defines the largest possible value of the RadSlider.
    • TrackPosition - The TrackPosition property defines the position of the track element in the RadSlider.
    • ItemType - The ItemType property defines the type of the slider items - Tick, Item or None.
    • ShowDragHandle - Using the ShowDragHandle property, you can configure the RadSlider not to display dragHandle(s).
    • ShowDecreaseHandle - Using the ShowDecreaseHandle property, you can configure the RadSlider not to display a decrease handle.
    • ShowIncreaseHandle - Using the ShowIncreaseHandle property, you can configure the RadSlider not to display an increase handle.
    • IsSelectionRangeEnabled - The IsSelectionRangeEnabled property defines whether the RadSlider should display one or two dragHandles.
    • EnableDragRange - Using the EnableDragRange property, you can specify whether the user can change both the SelectionStart and the SelectionEnd properties of the slider by dragging the selected region element.

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="vb" AutoEventWireup="true" Inherits="Telerik.Web.Examples.Slider.ServerSideAPI.DefaultVB"
        CodeFile="DefaultVB.aspx.vb" %>

    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <qsf:HeadTag ID="Headtag1" runat="server" />
        <style type="text/css">
        #_rfdSkinnedConfigureSlider
        {
            float:right;
        }
        </style>
    </head>
    <body class="BODY">
        <form id="Form1" method="post" runat="server">
            <qsf:Header ID="Header1" runat="server" NavigationLanguage="VB" />
            <telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>
            <telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" DecoratedControls="All" />
            <div class="module" style="width: 415px; float: left; padding: 0 0 0 10px;">
                <table id="ToolTipConfigurator" style="width: 405px; height: 490px; border: 0px;"
                    runat="server">
                    <tr>
                        <td colspan="4" style="height: 49px;">
                            <br />
                            <strong>Configure slider:</strong><br />
                            <hr />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblValue" runat="server" Text="Value/SelectionStart:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_Value" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_Value" runat="server" ControlToValidate="RadSlider1_Value"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator_Value" runat="server" ControlToValidate="RadSlider1_Value"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator>
                        </td>
                        <td id="selectionEndLabelCell">
                            <asp:Label ID="lblSelectionEnd" runat="server" Text="SelectionEnd:"></asp:Label></td>
                        <td id="selectionEndTextBoxCell" style="width: 60px">
                            <asp:TextBox ID="RadSlider1_SelectionEnd" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_SelectionEnd" runat="server" ControlToValidate="RadSlider1_SelectionEnd"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="RadSlider1_SelectionEnd"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblWidth" runat="server" Text="Width (px):"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_Width" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_Width" runat="server" ControlToValidate="RadSlider1_Width"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="RadSlider1_Width"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                        <td>
                            <asp:Label ID="lblHeight" runat="server" Text="Height (px):"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_Height" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_Height" runat="server" ControlToValidate="RadSlider1_Height"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ControlToValidate="RadSlider1_Height"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblMinimumValue" runat="server" Text="MinimumValue:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_Minimum" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_Minimum" runat="server" ControlToValidate="RadSlider1_Minimum"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="RadSlider1_Minimum"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                        <td>
                            <asp:Label ID="lblMaximumValue" runat="server" Text="MaximumValue:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_Maximum" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_Maximum" runat="server" ControlToValidate="RadSlider1_Maximum"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator5" runat="server" ControlToValidate="RadSlider1_Maximum"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblSmallChange" runat="server" Text="SmallChange:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_SmallChange" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_SmallChange" runat="server" ControlToValidate="RadSlider1_SmallChange"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator6" runat="server" ControlToValidate="RadSlider1_SmallChange"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                        <td>
                            <asp:Label ID="lblLargeChange" runat="server" Text="LargeChange:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:TextBox ID="RadSlider1_LargeChange" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_LargeChange" runat="server" ControlToValidate="RadSlider1_LargeChange"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator7" runat="server" ControlToValidate="RadSlider1_LargeChange"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblAnimationDuration" runat="server" Text="AnimationDuration:"></asp:Label></td>
                        <td style="width: 100%" colspan="3">
                            <asp:TextBox ID="RadSlider1_AnimationDuration" runat="server" Style="width: 40px"></asp:TextBox>
    <asp:CompareValidator ID="CompareValidator_AnimationDuration" runat="server" ControlToValidate="RadSlider1_AnimationDuration"
    Type="Integer" Operator="DataTypeCheck" ErrorMessage="!" Display="Dynamic">
                            </asp:CompareValidator>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator8" runat="server" ControlToValidate="RadSlider1_AnimationDuration"
    ErrorMessage="*" Display="Dynamic">
                            </asp:RequiredFieldValidator></td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblOrientation" runat="server" Text="Orientation:"></asp:Label></td>
                        <td style="width: 100%" colspan="3">
                            <telerik:RadSlider ID="RadSlider1_Orientation" runat="server" ItemType="Item" TrackPosition="BottomRight"
                                Height="35px" Width="250px">
                                <Items>
                                    <telerik:RadSliderItem Text="Horizontal" Value="Horizontal" />
                                    <telerik:RadSliderItem Text="Vertical" Value="Vertical" />
                                </Items>
                            </telerik:RadSlider>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblTrackPosition" runat="server" Text="TrackPosition:"></asp:Label></td>
                        <td style="width: 100%" colspan="3">
                            <telerik:RadSlider ID="RadSlider1_TrackPosition" runat="server" ItemType="Item" TrackPosition="BottomRight"
                                Height="35px" Width="250px">
                                <Items>
                                    <telerik:RadSliderItem Text="BottomRight" Value="BottomRight" />
                                    <telerik:RadSliderItem Text="Center" Value="Center" />
                                    <telerik:RadSliderItem Text="TopLeft" Value="TopLeft" />
                                </Items>
                            </telerik:RadSlider>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblItemType" runat="server" Text="ItemType:"></asp:Label></td>
                        <td style="width: 100%" colspan="3">
                            <telerik:RadSlider ID="RadSlider1_ItemType" runat="server" ItemType="Item" TrackPosition="BottomRight"
                                Height="35px" Width="250px" OnClientLoad="DisplayItemsCountCell" OnClientValueChanged="DisplayItemsCountCell">
                                <Items>
                                    <telerik:RadSliderItem Text="None" Value="None" />
                                    <telerik:RadSliderItem Text="Item" Value="Item" />
                                    <telerik:RadSliderItem Text="Tick" Value="Tick" />
                                </Items>
                            </telerik:RadSlider>

                            <script type="text/javascript">
                            function DisplayItemsCountCell(sender, args)
                            {
                                var itemsCountCell = $get('itemsCountCell');
                                itemsCountCell.style.visibility = (sender.get_selectedItem().get_value() == "Item") ? "" : "hidden";
                            }
                            </script>

                        </td>
                    </tr>
                    <tr id="itemsCountCell" style="visibility: hidden;">
                        <td>
                            <asp:Label ID="lblNumberOfItems" runat="server" Text="Number of items:"></asp:Label></td>
                        <td style="width: 100%" colspan="3">
                            <telerik:RadSlider ID="RadSlider1_ItemsCount" runat="server" ItemType="Item" TrackPosition="BottomRight"
                                Height="35px" Width="250px">
                                <Items>
                                    <telerik:RadSliderItem Text="3" Value="3" />
                                    <telerik:RadSliderItem Text="5" Value="5" />
                                    <telerik:RadSliderItem Text="10" Value="10" />
                                </Items>
                            </telerik:RadSlider>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblEnabled" runat="server" Text="Enabled:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_Enabled" runat="server" />
                        </td>
                        <td>
                            <asp:Label ID="lblTrackMouseWheel" runat="server" Text="TrackMouseWheel:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_TrackMouseWheel" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblShowDragHandle" runat="server" Text="ShowDragHandle:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_ShowDragHandle" runat="server" />
                        </td>
                        <td>
                            <asp:Label ID="lblLiveDrag" runat="server" Text="LiveDrag:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_LiveDrag" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblShowDecreaseHandle" runat="server" Text="ShowDecreaseHandle:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_ShowDecreaseHandle" runat="server" />
                        </td>
                        <td>
                            <asp:Label ID="lblShowIncreaseHandle" runat="server" Text="ShowIncreaseHandle:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_ShowIncreaseHandle" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblIsSelectionRangeEnabled" runat="server" Text="IsSelectionRangeEnabled:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_IsSelectionRangeEnabled" runat="server" onclick="DisplaySelectionEndCell(this);" />

                            <script type="text/javascript">
                            function DisplaySelectionEndCell(checkBox)
                            {
                                var labelCell = $get("selectionEndLabelCell");
                                var textBoxCell = $get("selectionEndTextBoxCell");
                                
                                labelCell.style.visibility = (checkBox.checked) ? "" : "hidden";
                                textBoxCell.style.visibility = (checkBox.checked) ? "" : "hidden";
                            }
                            </script>

                        </td>
                        <td>
                            <asp:Label ID="lblIsDirectionReversed" runat="server" Text="IsDirectionReversed:"></asp:Label></td>
                        <td style="width: 60px">
                            <asp:CheckBox ID="RadSlider1_IsDirectionReversed" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="lblEnableDragRange" runat="server" Text="EnableDragRange:"></asp:Label></td>
                        <td colspan="3">
                            <asp:CheckBox ID="RadSlider1_EnableDragRange" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td colspan="4" style="height: 37px;">
                            <asp:Button ID="ConfigureSlider" runat="server" OnClick="ConfigureSlider_Click" Text="Configure Slider" />
                        </td>
                    </tr>
                </table>
            </div>
            <div style="padding: 0px 39px; float: left; margin-bottom: 30px; width: 240px; height: 490px;
                overflow: auto; position: relative; border: #c6e1f2 1px solid;">
                <div style="padding-top: 20px;">
                    <strong>Preview:</strong><br />
                    <hr />
                </div>
                <telerik:RadSlider runat="server" ID="RadSlider1" Orientation="Vertical" Width="70px"
                    ItemType="tick" SmallChange="5" LargeChange="10" IsSelectionRangeEnabled="true"
                    SelectionStart="10" SelectionEnd="50" OnClientLoad="SliderLoad" />

                <script type="text/javascript">
                // Set the real value/selectionStart and selectionEnd in the bextBoxes as it might be incorrect - e.g. in case the user
                // sets MinimumValue for the slider control that is larger than the Value/SelectionStart.
                function SliderLoad(sender, args)
                {
                    $get("RadSlider1_Value").value = (sender.get_isSelectionRangeEnabled())
         ? sender.get_selectionStart()
         : sender.get_value();
         $get("RadSlider1_SelectionEnd").value = sender.get_selectionEnd();
                }
                </script>

            </div>
            <div style="clear: both; height: 1px; margin-bottom: -1px;">
                <!-- -->
            </div>
            <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
            </telerik:RadAjaxLoadingPanel>
            <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
                <AjaxSettings>
                    <telerik:AjaxSetting AjaxControlID="ConfigureSlider">
                        <UpdatedControls>
                            <telerik:AjaxUpdatedControl ControlID="RadSlider1" LoadingPanelID="RadAjaxLoadingPanel1" />
                            <telerik:AjaxUpdatedControl ControlID="RadSlider1_Width" UpdatePanelRenderMode="Inline" />
                            <telerik:AjaxUpdatedControl ControlID="RadSlider1_Height" UpdatePanelRenderMode="Inline" />
                        </UpdatedControls>
                    </telerik:AjaxSetting>
                </AjaxSettings>
            </telerik:RadAjaxManager>
            <qsf:Footer runat="server" ID="Footer1" />
        </form>
    </body>
    </html>

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