public static DateTimeField WhenHasValueShould(this NullableField <DateTime> field)
{
if (field.Value.HasValue)
{
return(new DateTimeField(field.Value.Value, true).UseDisplayName(field.DisplayName));
}
else
{
return(new DateTimeField(DateTime.MinValue, false).UseDisplayName(field.DisplayName));
}
}
public static Int32Field WhenHasValueShould(this NullableField <int> field)
{
if (field.Value.HasValue)
{
return(new Int32Field(field.Value.Value, true).UseDisplayName(field.DisplayName));
}
else
{
return(new Int32Field(int.MinValue, false).UseDisplayName(field.DisplayName));
}
}
public static DecimalField WhenHasValueShould(this NullableField <decimal> field)
{
if (field.Value.HasValue)
{
return(new DecimalField(field.Value.Value, true).UseDisplayName(field.DisplayName));
}
else
{
return(new DecimalField(decimal.MinValue, false).UseDisplayName(field.DisplayName));
}
}
/// <summary>
/// 验证不允许为空
/// </summary>
/// <typeparam name="TInnerValue"></typeparam>
/// <param name="field"></param>
/// <param name="customMsg">自定义错误信息，为空时忽略</param>
/// <returns></returns>
public static NullableField <TInnerValue> NotBeNull <TInnerValue>(this NullableField <TInnerValue> field,
string customMsg = "") where TInnerValue : struct
{
if (field.ShouldValidate)
{
if (!field.Value.HasValue)
{
throw new ValidationException(string.IsNullOrEmpty(customMsg) ?
string.Format("{0}：不允许为空!", field.DisplayName) : customMsg);
}
}
return(field);
}
