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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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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