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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 64001 to 65000 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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