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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 291001 to 292000 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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