C# 从不同的表单调用文本框

Question

I am trying to access the textbox of form1 (Econtact) from form2. I made the textbox public but it didn't help.

This is the code in form2

    TextBox Form2txtboxFirstName = Econtact.txtboxFirstName;

the following code is giving me the error An object reference is required for the non-static field, method, or property 'Econtact.txtboxFirstName'

Answer 1

If Econtact form is child of Form2, then pass reference of Form2

public partial class Form2 : Form
{
    private EContact _eContact;

    public Form2(EContact eContact)
    {
        InitializeComponent();

        _eContact = eContact;
        MsgBox.Show(_eContact.txtboxFirstName.Text);
    }       
}

inside EContact form however, you will have to pass the reference while calling the form2

var form2 = New Form2(this);
form2.Show();