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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 267001 to 268000 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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