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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 289001 to 290000 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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