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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 60001 to 61000 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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