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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 230001 to 231000 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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