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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 279001 to 280000 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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