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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 289001 to 290000 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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