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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 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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