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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 37001 to 38000 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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