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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 295001 to 296000 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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