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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 278001 to 279000 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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