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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 253001 to 254000 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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