列表动态创建列，可以参与二开案例示例

https://wenku.my7c.com/article/130367358388408320?productLineId=1&isKnowledge=2

业务需要可能对动态创建列要进行属性的设置，如金额小数点、汇总值，即字段在BOS上的属性都可以设置

可以二开案例代码

public static T CreateField<T, K>(Context ctx, string entityKey, string fieldName, string caption, PayItemAmountFieldSetDto amountFieldSetDto = null,

            int columnWidth = 100,

            string propName = "", ElementType elementType = null)

            where T : FieldAppearance, new()

            where K : Field, new()

        {

            if (amountFieldSetDto == null)

            {

                amountFieldSetDto= new PayItemAmountFieldSetDto();

                amountFieldSetDto.DisplayByReallyPrecision = false;

                amountFieldSetDto.FieldPrecision = 18;

                amountFieldSetDto.FieldScale = 2;

                amountFieldSetDto.ZeroShow = 1;

            }

            var fieldAppearance = new T();

            fieldAppearance.Field = new K();

            if (elementType != null)

            {

                PropertyUtil.SetAppearenceDefaultValue(fieldAppearance, elementType, ctx.UserLocale.LCID);

                PropertyUtil.SetBusinessDefaultValue(fieldAppearance.Field, elementType, ctx.UserLocale.LCID);

            }

            fieldAppearance.Key = fieldName;

            fieldAppearance.EntityKey = entityKey;

            fieldAppearance.Caption = new LocaleValue(caption, ctx.UserLocale.LCID);

            fieldAppearance.Width = new LocaleValue(columnWidth.ToString(), ctx.UserLocale.LCID);

            fieldAppearance.Locked = -1;

            fieldAppearance.Visible = -1;

            //

            fieldAppearance.Field.Key = fieldName;

            fieldAppearance.Field.EntityKey = entityKey;

            fieldAppearance.Field.Name = fieldAppearance.Caption;

            fieldAppearance.Field.FieldName = fieldName;

            fieldAppearance.Field.PropertyName = string.IsNullOrWhiteSpace(propName) ? fieldName : propName;

            fieldAppearance.Field.FireUpdateEvent = 0;

            //设置 字段属性

            if (fieldAppearance.Field is AmountField)

            {

                var amountField = (AmountField)fieldAppearance.Field;

                amountField.ZeroShow = amountFieldSetDto.ZeroShow;

                amountField.DisplayByReallyPrecision = amountFieldSetDto.DisplayByReallyPrecision;

                amountField.FieldScale = amountFieldSetDto.FieldScale;

                amountField.FieldPrecision = amountFieldSetDto.FieldPrecision;

                amountField.SummaryType = SummaryType.SUM_VALUE;

            }

            return fieldAppearance;

        }

老师，动态创建的列在列表导出时，值为空，有啥办法么