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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 198001 to 199000 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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