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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 26001 to 27000 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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