flutter text field underline and dropdown underline are not in the same line

Question

hi, in flutter I have tow widgets TextFormField and DropdownButton in a Row But as you see in the picture they are not in the same line

Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          crossAxisAlignment: CrossAxisAlignment.end,
          children: [
            SizedBox(
              width: HDW().fullWidth(context: context, width: 0.35),
              height: HDW().fullHeight(context: context, height: 0.08),
              child: TextFormField(
                controller: sectionTextEditingController,
                onChanged: (n) {
                  homeController.setSectionNo(n);
                },
                keyboardType: TextInputType.number,
              ),
            ),
            SizedBox(
              width: HDW().fullWidth(context: context, width: 0.35),
              height: HDW().fullHeight(context: context, height: 0.08),
              child:
              DropdownButton<String?>(
                items: homeController.sections
                    .map((e) => DropdownMenuItem<String?>(
                  value: e,
                  child: Text( e,textAlign: TextAlign.start,style: TextStyle(fontFamily: font),),
                ),)
                    .toList(),
                value: homeController.selectedLetter.isNotEmpty
                    ? homeController.selectedLetter
                    : null,
                onChanged: (value) {
                  homeController.setSectionLetter(value!);
                },
                hint: Text(
                  'تحديد',
                  style: TextStyle(fontFamily: font),
                ),
                isExpanded: true,
                icon: const Icon(Icons.keyboard_arrow_down),
              ),
            ),
          ],
        )

for note
double fullHeight({ required BuildContext context, double height = 1, }) => height * MediaQuery.of(context).size.height;

Answer 1

Setting isDense: true on DropdownButton will solve the bottom padding,

child: DropdownButton<String?>(
  isDense: true,

but when it large size, textFiled is needed to be

child: TextFormField(
  expands: true,
  maxLines: null,
  minLines: null,