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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 66001 to 67000 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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