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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 66001 to 67000 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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