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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 204001 to 205000 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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