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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 63001 to 64000 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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