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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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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