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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 278001 to 279000 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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