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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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