public int Delete()
{
int result = TableData.DeleteByColumnValues("Group", "StudentProgressDB",
new List<string>() { "GroupID" },
new List<string>() { this.Id.ToString() });
if (result > 0)
Group.Items.Remove(this.Id);
return result;
}
public int Delete()
{
int result = TableData.DeleteByColumnValues("Student", "StudentProgressDB",
new List <string>()
{
"StudentID"
},
new List <string>()
{
this.Id.ToString()
});
if (result > 0)
{
Subject.Items.Remove(this.Id);
}
return(result);
}