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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 211001 to 212000 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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