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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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