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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 219001 to 220000 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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