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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 202001 to 203000 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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