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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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