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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 201001 to 202000 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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