Syntax
            
        
            Parameters
- period
- A TdPeriodDate.
- interval
- The number of years and months from the TdIntervalYearToMonth that will be added to the TdPeriodDate.
Return Value
A TdPeriodDate is returned that is the result of adding a TdIntervalYearToMonth to a TdPeriodDate.
 
            Exceptions
| Exception | Description | 
|---|
| System.OverflowException | Unable to add the specified TdIntervalYearToMonth to a TdPeriodDate. | 
| TdException | The TdPeriodDate beginning bound is greater or equal to the ending bound of the period. | 
Requirements
| Product | Versions | Platforms | 
|---|
| .NET | 6, 7 | Windows, Linux, MacOS | 
| .NET Framework | 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 | Windows | 
| .NET Standard | 2.0 | Windows, Linux, MacOS | 
 
            
            See Also