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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 272001 to 273000 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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