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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 259001 to 260000 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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