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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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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