Solved

Filtering an XML file by product name, displaying results in a datalist

Posted on 2013-12-01
2
228 Views
Last Modified: 2013-12-04
I am working in ASP.Net (vb) with a client's XML file (reduced from 319 entries to 3):

 
<?xml version= "1.0"?>
<products>
	<product id="001">
		<division>Division1</division>
		<name>AName</name>
		<model>Model1</model>
		<category></category>
		<datathumbURL>image.jpg</datathumbURL>
		<datasheetURL>document.pdf</datasheetURL>
		<thumbURL>image.png</thumbURL>
		<fullImageURL></fullImageURL>
		<description>Many, many words here</description>
		<contactSnail>address, city, state, zip</contactSnail>
		<contactDigits>phone</contactDigits>
		<contactWebsite>URL</contactWebsite>
	</product>
	<product id="002">
		<division>Division2</division>
		<name>BName</name>
		<model>Model2</model>
		<category></category>
		<datathumbURL>image.jpg</datathumbURL>
		<datasheetURL>document.pdf</datasheetURL>
		<thumbURL>image.png</thumbURL>
		<fullImageURL></fullImageURL>
		<description>many, many words here</description>
		<contactSnail>address, city, state, zip</contactSnail>
		<contactDigits>phone</contactDigits>
		<contactWebsite>URL</contactWebsite>
	</product>
	<product id="003">
		<division>Division3</division>
		<name>CName</name>
		<model>Model3</model>
		<category></category>
		<datathumbURL>image.jpg</datathumbURL>
		<datasheetURL>document.pdf</datasheetURL>
		<thumbURL>image.png</thumbURL>
		<fullImageURL></fullImageURL>
		<description>man, many words here</description>
		<contactSnail>address, city, state, zip</contactSnail>
		<contactDigits>phone</contactDigits>
		<contactWebsite>URL</contactWebsite>
	</product>
</products>

Open in new window


... and have created the sort and display code which works as expected (sorting the list of 319 products by name, division or model):

<script runat="server">
	Sub Page_Load

		dim dsProducts = New DataSet
		dsProducts.ReadXml(MapPath("products.xml"))
		
		Dim sid As String
		sid = Request.QueryString("sid")	
			
		If String.IsNullOrEmpty(Request.QueryString("sid")) Then
			dsProducts.Tables(0).DefaultView.Sort = "name, division, model ASC"			
		Elseif sid = "div" Then
			dsProducts.Tables(0).DefaultView.Sort = "division, name, model ASC"
		Elseif sid = "mod" Then
			dsProducts.Tables(0).DefaultView.Sort = "model, name, division ASC"	
		End If
	
		Dim dsProductsSort = dsProducts.Tables(0).DefaultView.ToTable()
		dlProducts.DataSource = dsProductsSort
		dlProducts.DataBind()
	End sub
</script>

<asp:DataList id="dlProducts" runat="server">
	<ItemTemplate>
		<a href="products-details.aspx?id=<%#Container.DataItem("id")%>" style="color:blue"> <%#Container.DataItem("name")%> | <%#Container.DataItem("model")%></a> | <%#Container.DataItem("division")%> 
	</ItemTemplate>
</asp:DataList>

Open in new window


The client would now like a page that will allow clicking on a letter of the alphabet (A - B - C, etc...) to see a list of product names beginning with that letter.  In the example XML code these are listed as AName, BName and CName.

Ideally, the results would be shown in the same datalist included above.

Easy enough to do using a database - I can't seem to wrap my ahead around making it work using an XML file as the datasource.  Shuffling fields in the XML file is an option if required.

Help?
0
Comment
Question by:henryroark
2 Comments
 
LVL 52

Accepted Solution

by:
Carl Tawn earned 500 total points
ID: 39689492
You should be able to add a RowFilter to the view based on the letter selected:
Dim filterLetter As String = "A"

...

If String.IsNullOrEmpty(Request.QueryString("sid")) Then
    dsProducts.Tables(0).DefaultView.Sort = "name, division, model ASC"
    dsProducts.Tables(0).DefaultView.RowFilter = "name like '" & filterLetter & "%'"
    ...
End If

Open in new window

0
 

Author Closing Comment

by:henryroark
ID: 39696268
Simple and perfect, thank you.  I had it in mind that it would be a complicated matter.  Knowing about .RowFilter opens up a lot of possibilities.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.

825 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question