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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 40001 to 41000 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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