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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 281001 to 282000 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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