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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 245001 to 246000 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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