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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 205001 to 206000 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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