[2.0] DataSet Check Constraints?

I have set a constraint on 40 float fields in my SQL Server DB to not allow anything less than zero. What is the best way to create a constraint in a databound UI? Is there no way to add a check constraint to a strongly typed DataSet?

I can hook up the Parse event of each individual binding, but this seems cumbersome. For example, the binding already adds the feature that on entering a non numeric value in a field bound to a float, then the field can't lose focus until the value is entered correctly.

So far, I have to hook up a Parse event for every single field such as:

csharp Code:

Binding bRate = new Binding(
    "Text",
    this.statusNotesBindingSource,
    this.notesDataSet.StatusNotes.payRateColumn.ColumnName,
    true,
    DataSourceUpdateMode.OnValidation,
    String.Empty,
    "n2"
    );
 
bRate.Parse += new ConvertEventHandler(bRate_Parse);
 
 
...
 
 
void bRate_Parse(object sender, ConvertEventArgs e)
{
    if (e.DesiredType == typeof(Single))
{   
        if (Convert.ToSingle(e.Value) < 0)
            e.Value = 0;
    }
}

Is there a better way?