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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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