How do I Bind an XElement Attribute in CodeBehind

11-04-2009 11:26 AM |

I have the following XElement document and I am trying to bind the elements and attributes to a datagrid from codebehind.  I need to do it from codebehind so I can build my datagrid dynamically.  The element is binding but the attributes are not binding correctly.  Does anyone know how to get the attributes to display.

 Here is my XElement:

XElement element = new XElement("Root",
  new XElement("Role",
    new XAttribute("CanEditUsers",false),
    new XAttribute("CanViewUsers",true),
  "Administrator"
));

Here is my code to that adds the columns to a datagrid and binds their values.

IEnumerable<XElement> childList = from el in element.Elements()
select el;

foreach (XElement e in childList)
{
  this.dgTest.Columns.Add(
    new DataGridTextColumn
      {
        Header = e.Name.LocalName,
        Binding = new Binding("Value")
      });

      foreach (var a in e.Attributes())
      {
        this.dgTest.Columns.Add(
          new DataGridTextColumn
          {
            Header = a.Name.LocalName,
            Binding = new Binding("Value")
          });
      }
}

This is what the output looks like:  (The columns are correct but the values for the attributes are not)

 

Role	CanEditUsers	CanViewUsers
Administrator	Administrator	Administrator

 

Re: How do I Bind an XElement Attribute in CodeBehind

11-04-2009 3:12 PM |

nbruckelmyer:

The columns are correct but the values for the attributes are not

 

You're setting the same binding on all the columns, so you get the same value in all the columns :)

You could use a converter on the attribute column bindings, passing the attribute name as the converter parameter.  An example is shown in the "Answers" section here. (thank you to Bryant for saving me from typing up an example :))

 

Re: Re: How do I Bind an XElement Attribute in CodeBehind

11-05-2009 9:56 AM |

How can I do this from codebehind?

Re: How do I Bind an XElement Attribute in CodeBehind

11-05-2009 10:11 AM |

I've found it's a lot easier to define a class that represents the parsed XML values. Use LINQ to XML to load the entity/class from the XML, then bind to the class instead of trying to bind to the Xml fragments.

 

Re: Re: How do I Bind an XElement Attribute in CodeBehind

11-05-2009 11:22 AM |

Do you know if its possible to do what I am trying.  I can't create a class based on the xml cause it's a dynamic data.