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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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