combobox string alignment

I use this statement to bind data to a combobox

 strb.Append("SELECT *,[TAXCODE]+'              |   '+[TAXPROVINCE] AS [DETAILS] FROM [BD_TAXTABLE]");

because my TAXCODE can be one or two character long - it throws the TAXPROVINCE out of alignment

I was wondering if I could left justfy the [TAXCODE] to see if this would correct the alignment.

or any suggestions would be welcome