wpf datagrid: write value in textbox column

Question

I have a Datagrid with some columns. It is binded to a list of objects. One of the column is a text column: I need it as a "validation" column, infact I want that, for each row, the value of this cell is "OK" or "NOT OK", based on values present in other cells. I don't know how to write a string into a certain cell into the Datagrid. Any suggestion?

EDIT: following the class that describes the objects of DataGrid

public class BracketProperty
{
    [XmlAttribute]
    public int index { get; set; }
    public BracketType type { get; set;}
    public List<BracketPoint> bracketPointsList;
    [XmlIgnore]
    public String isPointSelectionEnded { get; set; }
}

EDIT2: someone tells me that this line of code is not good

this.BracketsDataGrid.ItemsSource = this.currentPropertyToShow.sides[this.sideIndex - 1].brackets;

where brackets is defined as

 public ObservableCollection<BracketProperty> brackets;

because is not a binding...how can I change it to be a binding?

Answer 1

The easiest way to do this is to create a data type class that has a public property for each column in the DataGrid. You should implement the INotifyPropertyChanged interface in this class.

Then you can have a property which you could update in a PropertyChanged handler:

private void YourDataType_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
    if (Property1 == "SomeValue" && Property2 > 0) ValidationProperty = "OK";
    else ValidationProperty = "NOT OK"; // Add your own condition above of course
}

In the constructor:

PropertyChanged += YourDataType_PropertyChanged;