C# “does not contain a constructor that takes '1' arguments”

Question

I have read through some of the posts on this site relating to this error but I still can\'t work out how to do this - I\'m quite new to C#.

I am trying to pass mult

Answer 1

You are not suppling the second value. It takes 2 parameters.

Form3 a = new Form3(firstNameTxtBox.Text,lastNametextBox.Text);

Answer 2

I think you mean this

Form3 a = new Form3(firstNameTxtBox.Text, lastNametextBox.Text);
a.Show();

Compiler says Form3 doeesn't have a contructor with 1 argument. It is true.

public Form3(string a, string b)

This takes two parameters. So you'll have to pass two arguments.

When you say new Form3(firstNameTxtBox.Text); you're passing argument to parameter string a compiler says you have to pass string b also.

As a side note: Don't name variables and types names like a, b, Form1 etc. Purpose of the variable should be exposed by name itself.

Answer 3

Make firstNameLbl and lastNameLbl public Then initiate the new form like this:

var f3= new Form3();
f3.firstNameLbl.Text = firstNameTxtBox.Text;
f3.lastNameLbl.Text = lastNametextBox.Text;
f3.Show();

Answer 4

Here

Form3 a = new Form3(firstNameTxtBox.Text);

you are calling the Form3 constructor with one argument.

As the error explains, Form3 does not contain a constructor that takes a single argument. This is why when you remove the second argument from the constructor the error goes away.

You have two options:

1) Remove the second constructor argument.

public Form3(string a)
{
    InitializeComponent();
    firstNameLbl.Text = a;
}

2) Add the second argument to all the places where you call the Form3 constructor.

If you need the second constructor argument I suggest option 2.

For example:

Form3 a = new Form3(firstNameTxtBox.Text, lastNametextBox.Text);

Your final Form1 code would look something like:

public Form1()
{
    InitializeComponent();
}

private void nextBtn_Click(object sender, EventArgs e)
{
    Form3 a = new Form3(firstNameTxtBox.Text, lastNametextBox.Text);
    a.Show();

    this.Hide();
}

Answer 5

as you said if you have N forms then the date Exchange may be , i think ,More than saving it in a file u can use static class with get/set something like

Lets have a new Class GlobalClass

  public static class GlobalClass
    {
    public static string firstNameTxtBox
    { set; get; }


    public static string SecondNameTxtBox
    { set; get; }
    }

and u can set from any form (Namespace should b be noted)

@Form1

GlobalClass.firstNameTxtBox="This is From 1stForm";

@Form2

GlobalClass.SecondNameTxtBox="This is From Second Form";