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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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