protected bool SetField <T>(ref T field, T value, [CallerMemberName] string fieldName = null)
{
if (EqualityComparer <T> .Default.Equals(field, value))
{
return(false);
}
if (!IsDbReading)
{
PropertyInfo pi = this.GetType().GetProperty(fieldName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
if (pi.GetCustomAttributes(typeof(ColumnAttribute), true).Any()) // database column
{
if (!(pi.GetCustomAttributes(typeof(DatabaseAutoUpdatedAttribute), true).Any() ||
pi.GetCustomAttributes(typeof(JoinFieldAttribute), true).Any())) // not database and read only
{
lock (FieldsPreviousValue)
{
if (!FieldsPreviousValue.ContainsKey(pi))
{
FieldsPreviousValue[pi] = field;
}
}
}
}
Modified = true;
}
field = value;
NotifyOfPropertyChange(fieldName);
return(true);
}
protected bool SetField(ref string field, string value, [CallerMemberName] string fieldName = null)
{
if (EqualityComparer <string> .Default.Equals(field, value))
{
return(false);
}
if (!IsDbReading)
{
PropertyInfo pi = this.GetType().GetProperty(fieldName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
ColumnAttribute columnAttribute = (ColumnAttribute)pi.GetCustomAttributes(typeof(ColumnAttribute), true).FirstOrDefault();
if (columnAttribute != null) // database column
{
if (!(pi.GetCustomAttributes(typeof(DatabaseAutoUpdatedAttribute), true).Any() ||
pi.GetCustomAttributes(typeof(JoinFieldAttribute), true).Any())) // not database and read only
{
lock (FieldsPreviousValue)
if (!FieldsPreviousValue.ContainsKey(pi))
{
FieldsPreviousValue[pi] = field;
}
}
}
Modified = true;
if (!string.IsNullOrWhiteSpace(value) && columnAttribute != null && columnAttribute.Length > 0 && value.Length > columnAttribute.Length)
{
field = value.Substring(0, columnAttribute.Length);
}
else
{
field = value;
}
}
else
{
field = value;
}
NotifyOfPropertyChange(fieldName);
return(true);
}
