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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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