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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 231001 to 232000 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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