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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 218001 to 219000 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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