How can I use field value in a databound grid column's DefaultCellStyle format declaration ?

Question

to make this clearer I am giving the code below.
The Product Table Adapter is not used at the time of this class declaration. So how can I mention the field value as function parameter ?
Thanks to everbody for their interest.

public class Col_ProductName : Sanat.ssClass1.ssDataGridViewTextBoxColumn {

protected Sanat.ssClass1.ssDataGridViewCellStyle _ssDefaultCellStyle;

public Col_ProductName() {

this.DataPropertyName = "ProductName";

this.HeaderText = "Product Name";

this.Name = "ProductName";

this._ssDefaultCellStyle = new Sanat.ssClass1.ssDataGridViewCellStyle();

this._ssDefaultCellStyle.ForeColor = Sanat.ssFunc1.GetProductColor(string ProductName); // <-- param.problem! 

this.DefaultCellStyle = this._ssDefaultCellStyle;

}

}