Silverlight DataBinding Error

Question

I\'ve a GridView which has RowDetail. I want to each time user clicks on the rows get some detail from database, I use Telerik GridView

Answer 1

The reason for this is that WPF's and Silverlights DataGrid columns live outside the logical tree and thus make it impossible to use a binding source specified using ElementName which is common when referencing ViewModel properties such as commands from within DataGrid Template Columns. For more information about this problem see: http://blogs.msdn.com/b/jaimer/archive/2008/11/22/forwarding-the-datagrid-s-datacontext-to-its-columns.aspx

The class below act's as glue between the column and the world around it. It was written for Silverlight's built-in DataGrid but should be easy enough to adapt it for the Telerik Grid. It can be used like this:

  
        
    
      
    
    
      
      
      
    
    
    
    
  


public class DataGridShim : FrameworkElement
{
  /// 

  /// Initializes a new instance of the  class.
  /// prepares the ParentDataGrid property for consumption by sibling elements in the DataTemplate
  /// 
  public DataGridShim()
  {
    Loaded += (s, re) =>
    {
      ParentDataGrid = GetContainingDataGrid(this);
    };
  }

  /// 

  /// Gets or sets the parent data grid.
  /// 
  /// 
  /// The parent data grid.
  /// 
  public DataGrid ParentDataGrid { get; protected set; }

  /// 

  /// Walks the Visual Tree until the DataGrid parent is found and returns it
  /// 
  /// The value.
  /// The containing datagrid
  private static DataGrid GetContainingDataGrid(DependencyObject value)
  {
    if (value != null)
    {
      DependencyObject parent = VisualTreeHelper.GetParent(value);
      if (parent != null)
      {
        var grid = parent as DataGrid;
        if (grid != null)
          return grid;

        return GetContainingDataGrid(parent);
      }

      return null;
    }

    return null;
  }
}