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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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