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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 230001 to 231000 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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