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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 20001 to 21000 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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