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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 203001 to 204000 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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