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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 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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