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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 279001 to 280000 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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