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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 207001 to 208000 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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