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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 200001 to 201000 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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