/// <summary>
/// Set the value of the property for this FieldMap on the given instance.
/// </summary>
/// <param name="instance">The object whose property value will be set.</param>
/// <param name="value">The value to assign to the property.</param>
public void SetValue(object instance, object value)
{
if (IsNull(value))
{
value = NullValue;
Check.Verify(IsNullAssignable || NullValue != null, Error.NullWithNoNullValue, columnName,
map is ObjectMap ? (map as ObjectMap).Type.Name : map.TableName);
}
// perform a few automatic type conversions
else if (memberType.IsEnum)
{
value = handleEnumAsString
? Enum.Parse(memberType, Convert.ToString(value), true)
: Enum.ToObject(memberType, Convert.ToInt32(value));
}
else if (memberType == typeof(Guid) && value != null && value.GetType() == typeof(string))
{
if (Size == 16) // binary compressed version
{
value = TypeConverter.ToGuid((string)value);
}
else
{
value = new Guid((string)value);
}
}
else if (memberType == typeof(decimal) && value != null && value.GetType() == typeof(string))
{
value = Convert.ToDecimal(value, NumberFormatInfo.InvariantInfo);
}
else
{
System.ComponentModel.TypeConverter typeConv = TypeDescriptor.GetConverter(memberType);
if (typeConv != null && typeConv.CanConvertFrom(value.GetType()))
{
value = typeConv.ConvertFrom(value);
}
else
{
// check for the existence of a TypeConverterAttribute for the field/property
object[] attrs = MemberInfo.GetCustomAttributes(typeof(TypeConverterAttribute), false);
if (attrs.Length == 1)
{
TypeConverterAttribute tca = (TypeConverterAttribute)attrs[0];
System.ComponentModel.TypeConverter typeConverter = (System.ComponentModel.TypeConverter)
Activator.CreateInstance(Type.GetType(tca.ConverterTypeName));
if (value != null && typeConverter != null && typeConverter.CanConvertFrom(value.GetType()))
{
value = typeConverter.ConvertFrom(value);
}
else
{
value = Convert.ChangeType(value, memberType);
}
}
else
{
value = Convert.ChangeType(value, memberType);
}
}
}
// update member
if (memberInfo is PropertyInfo)
{
(memberInfo as PropertyInfo).SetValue(instance, value, Reflector.InstanceCriteria, null, null, null);
}
else
{
(memberInfo as FieldInfo).SetValue(instance, value, Reflector.InstanceCriteria, null, null);
}
}
