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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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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