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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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