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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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