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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 239001 to 240000 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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