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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 273001 to 274000 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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