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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 285001 to 286000 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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