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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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