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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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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