dataset find guid by column value

I have a windows app vb.net 2005.

I want to find a guid by passing in a value and a column name

countries table
GUID
name
longname

I want to do something like
guid=ctable.findGUID("name", "USA")

or
guid=ctable.findGUID("longname", "United States")
jackjohnson44Asked:
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dstanley9Commented:
try this:

public Guid FindGuid(DataTable table, string column, string value)
{
   // see if the column exists
   if(table.Columns[column] == null)
    throw new Application Exception("Column " + column + " does not exist.");

   DataRow[] rows = table.Select(column + " = '" + value + "'");
   if(rows.Length == 0) // no match found
      return null;
   if(rows.Length > 1) // multiple matches found
      throw new Application Exception("Too many matches.");
   
   return (Guid)rows[0]["GUID"];
}
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