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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 207001 to 208000 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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