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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 174001 to 175000 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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