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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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