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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 265001 to 266000 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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