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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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