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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 219001 to 220000 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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