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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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