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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Owner	Hanna Moos	Italy	1 2 3 4 5
2	Marketing Assistant	Elizabeth Lincoln	USA	1 2 3 4 5
3	Marketing Manager	Hanna Moos	Argentina	1 2 3 4 5
4	Sales Manager	Matti Karttunen	England	1 2 3 4 5
5	Sales Consultant	Howard Snyder	England	1 2 3 4 5
6	Sales Representative	Georg Pipps	Austria	1 2 3 4 5
7	Sales Agent	Pascale Cartrain	France	1 2 3 4 5
8	Marketing Manager	Paul Henriot	England	1 2 3 4 5
9	Sales Representative	Matti Karttunen	Germany	1 2 3 4 5
10	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
11	Sales Manager	Paul Henriot	Brazil	1 2 3 4 5
12	Sales Consultant	Pascale Cartrain	France	1 2 3 4 5
13	Sales Representative	Patricio Simpson	Spain	1 2 3 4 5
14	Sales Manager	Patricio Simpson	Argentina	1 2 3 4 5
15	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
16	Marketing Assistant	Hanna Moos	Spain	1 2 3 4 5
17	Sales Consultant	Howard Snyder	Brazil	1 2 3 4 5
18	Sales Consultant	Hanna Moos	Brazil	1 2 3 4 5
19	Accountant	Elizabeth Lincoln	Austria	1 2 3 4 5
20	Sales Representative	Howard Snyder	France	1 2 3 4 5
21	Marketing Manager	Antonio Moreno	Germany	1 2 3 4 5
22	Owner	Georg Pipps	Italy	1 2 3 4 5
23	Sales Agent	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
24	Accounting Manager	Howard Snyder	France	1 2 3 4 5
25	Sales Manager	Georg Pipps	Italy	1 2 3 4 5
26	Sales Manager	Jaime Yorres	Germany	1 2 3 4 5
27	Sales Representative	Elizabeth Lincoln	Austria	1 2 3 4 5
28	Sales Associate	Antonio Moreno	Bulgaria	1 2 3 4 5
29	Sales Representative	Elizabeth Lincoln	England	1 2 3 4 5
30	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
31	Sales Agent	Patricio Simpson	Germany	1 2 3 4 5
32	Sales Representative	Antonio Moreno	France	1 2 3 4 5
33	Marketing Manager	Georg Pipps	USA	1 2 3 4 5
34	Sales Manager	Patricio Simpson	Argentina	1 2 3 4 5
35	Accountant	Howard Snyder	England	1 2 3 4 5
36	Accounting Manager	Matti Karttunen	France	1 2 3 4 5
37	Marketing Assistant	Antonio Moreno	USA	1 2 3 4 5
38	Sales Manager	Georg Pipps	Spain	1 2 3 4 5
39	Sales Associate	Patricio Simpson	Germany	1 2 3 4 5
40	Sales Associate	Paul Henriot	Bulgaria	1 2 3 4 5
41	Owner	Georg Pipps	Italy	1 2 3 4 5
42	Owner	Antonio Moreno	Italy	1 2 3 4 5
43	Sales Representative	Patricio Simpson	England	1 2 3 4 5
44	Sales Manager	Antonio Moreno	Germany	1 2 3 4 5
45	Accountant	Patricio Simpson	Austria	1 2 3 4 5
46	Sales Consultant	Matti Karttunen	Italy	1 2 3 4 5
47	Marketing Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
48	Accounting Manager	Paul Henriot	Brazil	1 2 3 4 5
49	Accountant	Hanna Moos	Germany	1 2 3 4 5
50	Sales Associate	Georg Pipps	England	1 2 3 4 5
51	Accountant	Pascale Cartrain	USA	1 2 3 4 5
52	Accounting Manager	Hanna Moos	Germany	1 2 3 4 5
53	Owner	Hanna Moos	Italy	1 2 3 4 5
54	Sales Manager	Paul Henriot	Argentina	1 2 3 4 5
55	Marketing Assistant	Antonio Moreno	USA	1 2 3 4 5
56	Marketing Assistant	Hanna Moos	USA	1 2 3 4 5
57	Sales Manager	Antonio Moreno	Austria	1 2 3 4 5
58	Sales Manager	Elizabeth Lincoln	England	1 2 3 4 5
59	Sales Representative	Georg Pipps	Bulgaria	1 2 3 4 5
60	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
61	Accountant	Georg Pipps	England	1 2 3 4 5
62	Accounting Manager	Patricio Simpson	France	1 2 3 4 5
63	Sales Representative	Paul Henriot	France	1 2 3 4 5
64	Sales Associate	Hanna Moos	Argentina	1 2 3 4 5
65	Accountant	Patricio Simpson	Germany	1 2 3 4 5
66	Marketing Manager	Jaime Yorres	USA	1 2 3 4 5
67	Accountant	Jaime Yorres	Spain	1 2 3 4 5
68	Sales Associate	Pascale Cartrain	Argentina	1 2 3 4 5
69	Accounting Manager	Hanna Moos	Spain	1 2 3 4 5
70	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5
71	Owner	Patricio Simpson	Argentina	1 2 3 4 5
72	Sales Associate	Hanna Moos	England	1 2 3 4 5
73	Marketing Manager	Matti Karttunen	Argentina	1 2 3 4 5
74	Owner	Pascale Cartrain	Italy	1 2 3 4 5
75	Sales Agent	Antonio Moreno	Bulgaria	1 2 3 4 5
76	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
77	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
78	Marketing Assistant	Jaime Yorres	England	1 2 3 4 5
79	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
80	Sales Representative	Matti Karttunen	Austria	1 2 3 4 5
81	Marketing Assistant	Georg Pipps	Brazil	1 2 3 4 5
82	Sales Representative	Elizabeth Lincoln	Spain	1 2 3 4 5
83	Sales Consultant	Paul Henriot	Spain	1 2 3 4 5
84	Sales Associate	Pascale Cartrain	Argentina	1 2 3 4 5
85	Accountant	Antonio Moreno	Argentina	1 2 3 4 5
86	Sales Consultant	Jaime Yorres	Italy	1 2 3 4 5
87	Accountant	Matti Karttunen	England	1 2 3 4 5
88	Owner	Patricio Simpson	France	1 2 3 4 5
89	Owner	Jaime Yorres	Italy	1 2 3 4 5
90	Marketing Assistant	Howard Snyder	England	1 2 3 4 5
91	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
92	Sales Associate	Antonio Moreno	Spain	1 2 3 4 5
93	Sales Consultant	Antonio Moreno	Brazil	1 2 3 4 5
94	Sales Agent	Patricio Simpson	Austria	1 2 3 4 5
95	Sales Agent	Jaime Yorres	Spain	1 2 3 4 5
96	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
97	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
98	Sales Agent	Hanna Moos	USA	1 2 3 4 5
99	Sales Consultant	Pascale Cartrain	Bulgaria	1 2 3 4 5
100	Sales Associate	Antonio Moreno	Austria	1 2 3 4 5


...31 32 33 34 35 36 37 38 39 40 ... Item 36001 to 37000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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