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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 206001 to 207000 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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