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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 254001 to 255000 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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