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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 234001 to 235000 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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