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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 30001 to 31000 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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