C＃WindowsForms-在Visual Studio上将文本框从Form1发送到Form2

Question

i have 2 forms on visual studio,

form1 have textbox1.text
form2, have textbox2.text and btnSave

obs: form2 open when i click on another button on form 1:

Form new = new form2();
           nova.Show();

how can i send textbox2 content from form2 to form1 (textbox1) clicking on btnSave ? What code will be necessary inside this click button event.

Thanks

Answer 1

Try this please: Step1: Create a constructor for form2 class as below:

 public Form2(string strTextBox)
        {
            InitializeComponent();
            label1.Text = strTextBox;
        }

Step2: Instantiate form2 class in form1's button click event handler as below:

 private void button1_Click(object sender, EventArgs e)
        {
            Form2 obj1 = new Form2(textBox1.Text);
            obj1.Show();
            this.Hide();
        }

Answer 2

Create an event on your second form that can be fired when the form is saved:

public event Action Saved;

Then create a property on that form that allows the textbox's text to be accessed:

public string SomeTextValue //TODO: rename to meaningful name
    { get{ return textbox2.Text;} }

Then you need to fire off the Saved event when you save your form:

if(Saved != null)
    Saved();

Then when you first create the form in Form1 attach an event handler to that event:

Form2 child = new Form2();
child.Saved += () => textbox1.Text = child.SomeTextValue;
child.Show();

Note that if you are also closing the second form right when you save it then you don't need a custom event, you can just utilize FormClosing instead.

Answer 3

researching i was able to make it work, lost some hours but now all is perfect, this is code that worked for me:

On form2:

public partial class form2 : Form
    {
        private string nome;
        public string passvalue
        {
            get { return nome; }
            set { nome = value; }
        }

form2, button save:

private void btnSalvar_Click(object sender, EventArgs e)
        {
            passvalue = txtMetragemcubica.Text;
            this.Hide();
        }

on form1 (this button open form2):

private void btnMetragemcubica_Click(object sender, EventArgs e)
        {
            form2 n = new form2();
            n.ShowDialog();
            txtMetragem.Text = n.passvalue
        }

Now it work this way: Open on form 1, then i click on button btnMetragemcubica and form2 open, then i insert values on different textbox and have result on txtMetragemcubica, when i click on save button (btnSalvar) it close form2 and send value to form1 in txtMetragem textbox.

Working perfect here, hope help another persons too. Anyway thanks for all help