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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 259001 to 260000 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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