/// <summary>
/// Helper Method which creates a default DataGridColumn object for the specified property type.
/// </summary>
/// <param name="itemProperty"></param>
/// <returns></returns>
internal static DataGridColumn CreateDefaultColumn(ItemPropertyInfo itemProperty)
{
Debug.Assert(itemProperty != null && itemProperty.PropertyType != null, "itemProperty and/or its PropertyType member cannot be null");
DataGridColumn dataGridColumn = null;
DataGridComboBoxColumn comboBoxColumn = null;
Type propertyType = itemProperty.PropertyType;
// determine the type of column to be created and create one
if (propertyType.IsEnum)
{
comboBoxColumn = new DataGridComboBoxColumn();
comboBoxColumn.ItemsSource = Enum.GetValues(propertyType);
dataGridColumn = comboBoxColumn;
}
else if (typeof(string).IsAssignableFrom(propertyType))
{
dataGridColumn = new DataGridTextColumn();
}
else if (typeof(bool).IsAssignableFrom(propertyType))
{
dataGridColumn = new DataGridCheckBoxColumn();
}
else if (typeof(Uri).IsAssignableFrom(propertyType))
{
dataGridColumn = new DataGridHyperlinkColumn();
}
else
{
dataGridColumn = new DataGridTextColumn();
}
// determine if the datagrid can sort on the column or not
if (!typeof(IComparable).IsAssignableFrom(propertyType))
{
dataGridColumn.CanUserSort = false;
}
dataGridColumn.Header = itemProperty.Name;
// Set the data field binding for such created columns and
// choose the BindingMode based on editability of the property.
DataGridBoundColumn boundColumn = dataGridColumn as DataGridBoundColumn;
if (boundColumn != null || comboBoxColumn != null)
{
Binding binding = new Binding(itemProperty.Name);
if (comboBoxColumn != null)
{
comboBoxColumn.SelectedItemBinding = binding;
}
else
{
boundColumn.Binding = binding;
}
PropertyDescriptor pd = itemProperty.Descriptor as PropertyDescriptor;
if (pd != null)
{
if (pd.IsReadOnly)
{
binding.Mode = BindingMode.OneWay;
dataGridColumn.IsReadOnly = true;
}
}
else
{
PropertyInfo pi = itemProperty.Descriptor as PropertyInfo;
if (pi != null)
{
if (!pi.CanWrite)
{
binding.Mode = BindingMode.OneWay;
dataGridColumn.IsReadOnly = true;
}
}
}
}
return dataGridColumn;
}
internal DataGridAutoGeneratingColumnEventArgs(DataGridColumn column, ItemPropertyInfo itemPropertyInfo) :
this(column, itemPropertyInfo.Name, itemPropertyInfo.PropertyType, itemPropertyInfo.Descriptor)
{
}