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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 269001 to 270000 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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