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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 237001 to 238000 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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