CODEWITHSUNDEEP
c#
user3575275
user3575275

Reputation: 11

How to Store the returned variable from one class to another class variable?

Form1.cs 

public String Return_inf()
{
    names = U_name.Text;
    return names;   
}

And i try to store it in another class string variable like :

public string  CheckLogin()
{
     Form1 f = new Form1();
     string name=f.Return_inf();
 }

But the variable is empty ....

Upvotes: 0

Views: 1238

Answers (2)

Shar1er80
Shar1er80

Reputation: 9041

The reason your variable name is empty is because you are creating a brand new Form1 object in your CheckLogin() method, instead of using an already existing Form1 object.

You could have your classes have references to one another.

Here is one example you could try by having the forms have references to one another

Form1 class:

public class Form1 : Form
{
    // Class variable to have a reference to Form2
    private Form2 form2;

    // Constructor
    public Form1()
    {
        // InitializeComponent is a default method created for you to intialize all the controls on your form.
        InitializeComponent();

        form2 = new Form2(this);
    }

    public String Return_inf()
    {
        names = U_name.Text;
        return names;
    }
}

Form2 class:

public class Form2 : Form
{
    // Class variable to have a reference back to Form1
    private Form1 form1;

    public Form2(Form1 form1)
    {
        InitializeComponent();
        this.form1 = form1;
    }

    public string CheckLogin()
    {
        // There is no need to create a Form1 object here in the method, because this class already knows about Form1 from the constructor
        string name=form1.Return_inf();

        // Use name how you would like
    }  
}

There are other ways of doing this, but IMO this would be the basics of sharing data between two forms.

Upvotes: 1

Motasem Alsaqqa
Motasem Alsaqqa

Reputation: 61

you can do it by defining static class like this 

static class GlobalClass
{
    private static string U_name= "";

    public static string U_name
    {
        get { return U_name; }
        set { U_name= value; }
    }
}

and you can use it as follow 

GlobalClass.U_name="any thing";

and then recall it like this 

string name=GlobalClass.U_name;

Upvotes: 0

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