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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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