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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 208001 to 209000 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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