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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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