Get comboBox value from another form in C# -

i have 2 forms, in form1 there button show form2. in form2 have combobox. after selecting item combobox, user can click button send combobox value form1 , form2 close.

here code:

form1:

private void button1_click(object sender, eventargs e) {     form2 frm2 = new form2();     frm2.showdialog(); } 

form2:

private void button1_click(object sender, eventargs e) {     form1 frm1 = new form1();     frm1.textbox1.text = convert.tostring(combobox1.selectedvalue);      this.dialogresult = dialogresult.ok; } 

but combobox value doesn't appear @ textbox on form1saas

you trying set value in combobox of new form, because create here:

form1 frm1 = new form1(); 

you should pass reference form1 instance form2 (via constructor or member field).

the correct way add private member field of type form1 form2 class, add parameter form2 constructor, , initialize on constructor call:

var form2 = new form2(this); 

then reference member field.