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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 191001 to 192000 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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