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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 203001 to 204000 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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