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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 207001 to 208000 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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