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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 262001 to 263000 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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