Sets or returns whether imported data columns will be truncated if the number of columns imported exceeds the number of target columns in the spreadsheet.

 public boolean TruncateColumns{ get; set; }
Public Property TruncateColumns() As Boolean

          //--- Get TruncateColumns
          bool truncateCols = importProps.TruncateColumns;

          //--- Set TruncateColumns
          importProps.TruncateColumns = true;
        

          '--- Get TruncateColumns
          Dim truncateCols As Boolean = importProps.TruncateColumns

          '--- Set TruncateColumns
          importProps.TruncateColumns = True