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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 198001 to 199000 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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