How can I pass values from one form to another?

Question

Consider the situation where I have two windows forms, say F1 and F2. After using F1, I have now called F2.ShowDialog().

Answer 1

May be I am late. but all those who may want.

In destination form have a constructor defined like this

public partial class Destination: Form
{
    string valueAccepted;
    public Destination(string _valuePassed)
    {
        InitializeComponent();
        this.valueAccepted= _valuePassed;
    }
}

and in Source Form call the form like this

        Source sourceForm= new Source ("value Passed");
        sourceForm.ShowDialog();

this way "value Passed" is passed from Form Source to Form Destination

Answer 2

let me reframe the question i ve 2 form f1, f2... i cal Form f2 = new Form(); f2.ShowDialog();

// now i need to pass the parameter from f1 window to f2 (which is modal dialog box) also return value from f2 form to f1

//now 'm using varibles that are in common namespace (for both f1 , f2)

Answer 3

Add this code in the relevant place in your from f1.

Form f2 = new Form();
f2.ShowDialog();

HTH

Answer 4

Has anyone considered simply passing the value to the form in the tag attribute.

Form newForm = new form();
newForm.Tag = passValue;
newform.showmodal();

when newform is shown the load (or any other) routine can use the data in tag

public void load()
{
  if (this.Tag.length > 0)
  {
     // do something with the data
  }
}