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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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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