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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 242001 to 243000 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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