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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 285001 to 286000 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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