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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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