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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 294001 to 295000 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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