Error:Column 'FieldName' Is Constrained To Be Unique. Value '0' Is Already Present

Hi,

Can anyone help me?

when I am inserting a record to a dataset I am getting  Column 'FieldID' is constrained to be unique.  Value '0' is already present.

I have 2 fields in table like FieldID,FieldName where FieldID id is Primary key and identity column

I am not inserting any value to FieldID as it is identity column.

DataRow newDR= dbDataSet.Tables[strTable].NewRow();for (int i = 0; i < e.Row.Cells.Count; i++)

{ if ( e.Row.Cells[i].Key != "FieldID" )

{if (e.Row.Cells[i].Value != null)

{

newDR[e.Row.Cells[i].Key] = e.Row.Cells[i].Value;dbDataSet.Tables[ strTable].Rows.Add(newDR);

}

}

Some times it is woking fine with out any error............

 

thanks..