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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 209001 to 210000 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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