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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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