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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 240001 to 241000 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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