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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 270001 to 271000 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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