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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 291001 to 292000 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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