How to pass combobox value from EdirRow form to form1

Actually i need when click on button 1 on windows form Edit Row

get selected value of combobox1 from windows form Edit Row

to windows form Form1 .

Details

I have two windows form

Form1

Edir Row

in form1 i have combobox1 drop down style:drop down list

form1_load

var dataSourceAr = new List();
dataSourceAr.Add(new Country() { Name = "???? ????", Value = 0 });
dataSourceAr.Add(new Country() { Name = "??????", Value = 1 });
dataSourceAr.Add(new Country() { Name = "????????", Value = 2 });
var dataSourceEn = new List();
dataSourceEn.Add(new Country() { Name = "SelectCountry", Value = 0 });
dataSourceEn.Add(new Country() { Name = "Jordon", Value = 1 });
dataSourceEn.Add(new Country() { Name = "Emarate ", Value = 2 });
var combined = dataSourceEn.Join(dataSourceAr, en => en.Value, ar => ar.Value, (en, ar) => new { Value = en.Value, Name = $"{ar.Name} - {en.Name}" }).ToList();
comboBox1.DataSource = combined;
comboBox1.DisplayMember = "Name";
comboBox1.ValueMember = "Value";

under button 1 click on windows form Edit Row that i need to pass selected value from it to form1 combobox

In Edit Row form

I have combobox and button in Edit Row form

when click button value of combobox1 from Edit form will transfere to second form Form1

Result of code above :

when click button in Edit Form it show form1

but value of combobox1 selected from Edit Row form not select same value to another combox in form1

nothing changed and nothing selected in form1 combobox value

so that how to solve problem ?