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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 234001 to 235000 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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