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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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