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Version Q2 2011 released 07/12/2011
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TabStrip / Add/Remove/Disable Tabs

Event log:

  • With RadTabStrip it is easy to add, remove or disable tabs at the client side. What is more, you can persist the changes after postback. 

    <script type="text/javascript">
        function addTab()
        {   
            ...
            //Adds the tab to the Tabs Collection of the selected tab
            selectedTab.get_tabs().add(tab);
            tab.set_text("Child Tab " + selectedTab.get_tabs().get_count());
            ...        
        }
        
        function removeTab()
        {
            ...        
            //Removes the selected tab from the Tabs Collection of the tabstrip
            tabStrip.get_tabs().remove(selectedTab);        
            
        }
        
        function disableTab()
        {
            ...
            //Disables the selected tab
            selectedTab.set_enabled(false);
                        
        }
    </script>
    

    If you want to persist these changes after postback, the methods described below should be used:

    • tabStrip.trackChanges();  -indicates that client-side changes are going to be made and these changes are supposed to be persisted after postback.
    • tabStrip.commitChanges(); - submits the changes to the server.
    var tabStrip = $find("<%=RadTabStrip1.ClientID%>");
    tabStrip.trackChanges();
    //add, remove, disable tabs
    tabStrip.commitChanges(); 
    
    Client side changes are available on the server side after postback. You can use the ClientChanges property to access them:
    foreach (ClientOperation<RadTab> operation in RadTabStrip1.ClientChanges)
    {
    	RadTab tab = operation.Item;
    
    	switch (operation.Type)
    	{
    		case ClientOperationType.Insert:
    			break;
    		case ClientOperationType.Remove:
    			break;
    		case ClientOperationType.Update:
    			UpdateClientOperation<RadTab> update = operation as UpdateClientOperation<RadTab>;
    			break;
    		case ClientOperationType.Clear:
    			break;
    	}	
    }
    

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ 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" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

    <%@ Page Language="vb" CodeFile="DefaultVB.aspx.vb" AutoEventWireup="false" Inherits="Telerik.Web.Examples.TabStrip.ClientSide.AddRemoveDisable.DefaultVB" %>

    <!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 runat="server" ID="Headtag1"></qsf:HeadTag>
        <style type="text/css">
            .section
            {
                clear:both;
                overflow:auto; /*clear the floats*/
                padding: 10px;
            }
        </style>
    </head>
    <body class="BODY">
        <form runat="server" id="mainForm" method="post">
            <telerik:RadScriptManager ID="ScriptManager" runat="server" />
            <qsf:Header runat="server" ID="Header1" NavigationLanguage="VB"></qsf:Header>

            <script type="text/javascript">
            //<![CDATA[
            function addTab()
            {
                var persistChanges = $get("<%= CheckBox1.ClientID %>").checked;
                
                var tabStrip = $find("<%= RadTabStrip1.ClientID %>");
                var selectedTab = tabStrip.get_selectedTab();
                
                if (persistChanges)
                    tabStrip.trackChanges();
                    
                var tab = new Telerik.Web.UI.RadTab();
                selectedTab.get_tabs().add(tab);
                tab.set_text("Child Tab " + selectedTab.get_tabs().get_count());
                
                if (persistChanges)
                    tabStrip.commitChanges();
                
                return false;
            }
            
            function removeTab()
            {
                var persistChanges = $get("<%= CheckBox1.ClientID %>").checked;
                
                var tabStrip = $find("<%= RadTabStrip2.ClientID %>");
                var selectedTab = tabStrip.get_selectedTab();
                if (!selectedTab)
                {
                    alert("Please select a tab first");
                    return false;
                }
                
                if (persistChanges)
                    tabStrip.trackChanges();
                
                tabStrip.get_tabs().remove(selectedTab);
                
                if (tabStrip.get_tabs().get_count() > 0)
                    tabStrip.get_tabs().getTab(0).set_selected(true);
                
                if (persistChanges)
                    tabStrip.commitChanges();
                    
                return false;
            }
            
            function disableTab()
            {
                var persistChanges = $get("<%= CheckBox1.ClientID %>").checked;
                
                var tabStrip = $find("<%= RadTabStrip3.ClientID %>");
                var selectedTab = tabStrip.get_selectedTab();
                if (!selectedTab)
                {
                    alert("Please select a tab first");
                    return false;
                }
                
                if (persistChanges)
                    tabStrip.trackChanges();
                
                selectedTab.set_enabled(false);
                selectedTab.set_selected(false);
                    
                if (persistChanges)
                    tabStrip.commitChanges();
                    
                return false;
            }
            //]]>
            </script>

            <div style="float: right">
    <asp:CheckBox runat="server" ID="CheckBox1" Text="Persist changes after postback"
    Checked="true" />

                <asp:Button runat="server" ID="Button1" Text="Postback" CssClass="qsfButtonBigger" />
            </div>
            <div class="section">
                <div class="title">
                    Adding tabs</div>
                <div style="float: right">
    <asp:Button runat="server" ID="Button2" Text="Add child to selected tab" CssClass="qsfButtonBigger"
    OnClientClick="return addTab();" />

                </div>
                <telerik:RadTabStrip runat="server" ID="RadTabStrip1" Style="float: left"
                    SelectedIndex="0">
                </telerik:RadTabStrip>
            </div>
            <div class="section">
                <div class="title">
                    Removing tabs</div>
                <div style="float: right">
    <asp:Button runat="server" ID="Button3" Text="Remove selected tab" CssClass="qsfButtonBigger"
    OnClientClick="return removeTab();" />

    <asp:Button runat="server" ID="Button4" Text="Reset tabstrip" CssClass="qsfButtonBigger"
    OnClick="Button3_Click" />

                </div>
                <telerik:RadTabStrip runat="server" ID="RadTabStrip2" Style="float: left"
                    SelectedIndex="0">
                </telerik:RadTabStrip>
            </div>
            <div class="section">
                <div class="title">
                    Disabling/Enabling tabs
                </div>
                <div style="float: right">
    <asp:Button runat="server" ID="Button5" Text="Disable selected tab" CssClass="qsfButtonBigger"
    OnClientClick="return disableTab();" />

    <asp:Button runat="server" ID="Button6" Text="Enable all tabs" CssClass="qsfButtonBigger"
    OnClick="Button6_Click" />

                </div>
                <telerik:RadTabStrip runat="server" ID="RadTabStrip3" Style="float: left"
                    SelectedIndex="0">
                </telerik:RadTabStrip>
            </div>
            <qsf:EventLogConsole ID="EventLogConsole1" runat="server" Style="clear: both;" />
            <qsf:Footer runat="server" ID="Footer1"></qsf:Footer>
        </form>
    </body>
    </html>

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