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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 36001 to 37000 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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