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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 283001 to 284000 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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