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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 245001 to 246000 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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