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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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