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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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