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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 297001 to 298000 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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