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Using XmlDataSource
Author: Ivan Osmak
Published: 6/13/2005 5:56 PM
Category: ASP.NET, XML.NET
Summary: Binding xml file to a GridView with use of XmlDataSource.

 

 

Introduction:

The coolest thing about XmlDataSource is that you can bind it to a control (in this example GridView) without writing any non-declarative code. And if you are using VWD 2005 Express, it takes approximately 30 seconds to do this. Nice job, MS!

1. Create XmlDataSource

Insert this tag on the web form:

<asp:XmlDataSource ID="xmlAuthors" runat="server" DataFile="~/xml/books.xml" XPath="bookstore/authors"> </asp:XmlDataSource>

"DataFile" attribute is a relative path to the xml file, and XPath attribute can be used to retrieve only specific data. In this case I have used XPath to retrieve only the child node "authors" whose parent is "bookstore".

2. Create GridView control (it's a successor of Asp.Net1 DataGrid)

<asp:GridView ID="gvwAuthors" runat="server" AutoGenerateColumns="False" DataSourceID="xmlAuthors" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px" CellPadding="4"  ForeColor="Black" GridLines="Vertical">
 <FooterStyle BackColor="#CCCC99" />
<RowStyle BackColor="#F7F7DE" />
<Columns>
<asp:BoundField DataField="name" HeaderText="Name" SortExpression="name" /> <asp:BoundField DataField="country" HeaderText="Country" SortExpression="country" /> <asp:ButtonField CommandName="ShowBooks" Text="Show books" />
</Columns>
<PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" /> <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" />
</asp:GridView>
 

The crucial attribute here is "DataSourceID" which specifies "xmlAuthors", the XmlDataSource we have created in first step.

Conclusion

And that's all there is to it. No one single line of code. No need for gvwAuthors.DataBind(), absolutely nothing! NOTE: The "Show books" link is there, but it doesn't really do anything. Keep reading examples and I'll let you into a great mystery of "Show books" link. :)

 

 


 

 
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