How can I enable cloning and saving information with the ids set to 0? I have been trying but there is a string.empty field that reads as null.

//local vars
private data1 _data1
private data2 _data2
private clonedinfo _clonedinfo

//constructor 
public forminfo (data1 DATA1, querymode=false, ...)
initializeComponent();
_repo = new REPO();
_products = new PRODUCTS();
_data1 = data_
_data2 = data_2

_clonedinfo = new data1
{
all class data here
}
...

private void CLONEFORM()
{
data1 clonedinfo = new data1
    {
    all the class data
    }
data2 data2clonedinfo = new data2
   {
    all the class data
   }
forminfo forminfoclonated = new forminfo(data1)
   {
    data1 = clonedinfo,
    data2 = data2clonedinfo
   }
        forminfoclonated.show();
}


/// LITTLE STRACT OF SAVE METHOD
 if if (data1.id== 0 || data1clonedinfo.id == 0) //NEW ENTRY
 {
     data_.Id = Func.ReadInt(txtNumberID);
   
    
     datarepo_.Insert(data_, tran);

     _Product= _ProductAux;
     _Product.ID = data_.id;

     save(tran)
 }

I tried to modify the save method by adding “if (data1.id== 0 || data1clonedinfo.id == 0) // INSERT NEW ENTRY”
Setted the data2clonedinfo value “comment” to string.empty to avoid null