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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 285001 to 286000 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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