public async Task<bool> Update(GpsVersion item)
{
var ver = await IdExist(item.Id);
if (await NameExist(item.Name)) return false;
ver.Name = item.Name;
_db.Entry(ver).State = EntityState.Modified;
try
{
await _db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException exception)
{
throw new DbUpdateConcurrencyException(exception.Message);
}
return true;
}
public async Task<GpsVersion> Add(GpsVersion item)
{
if (await NameExist(item.Name)) return null;
var newVer = new GpsVersion()
{
Name = item.Name
};
newVer = _db.GpsVersions.Add(newVer);
try
{
await _db.SaveChangesAsync();
return newVer;
}
catch (DbUpdateConcurrencyException exception)
{
throw new DbUpdateConcurrencyException(exception.Message);
}
}