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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 205001 to 206000 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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