// ---
public async Task <string> GetDbSetting(DbSetting key, string def)
{
string keyStr = key.ToString();
if (keyStr.Length > Models.Settings.MaxKeyFieldLength)
{
throw new Exception("DB settings key is too long");
}
try {
var sett = await(
from s in this.Settings
where s.Key == keyStr
select s
)
.AsNoTracking()
.FirstOrDefaultAsync();
if (sett != null)
{
return(sett.Value);
}
}
catch { }
return(def);
}
public async Task <bool> SaveDbSetting(DbSetting key, string value)
{
Settings sett = null;
string keyStr = key.ToString();
if (keyStr.Length > Models.Settings.MaxKeyFieldLength)
{
throw new Exception("DB settings key is too long");
}
if (value != null && value.Length > Models.Settings.MaxValueFieldLength)
{
throw new Exception("DB settings value is too long");
}
try {
sett = await(
from s in this.Settings
where s.Key == keyStr
select s
)
.FirstOrDefaultAsync();
if (sett != null)
{
sett.Value = value;
}
else
{
sett = new Settings()
{
Key = keyStr,
Value = value,
};
this.Settings.Add(sett);
}
await SaveChangesAsync();
return(true);
}
catch {
}
finally {
if (sett != null)
{
this.Entry(sett).State = EntityState.Detached;
}
}
return(false);
}