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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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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