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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 276001 to 277000 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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