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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 200001 to 201000 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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