How to call a method from another form

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C#

WinForms

How can i pass this method from another form to other

        public class arka_data

  {

      public int NR { get; set; }

      public int BARKODI { get; set; }

      public string EMERTIMI { get; set; }

      public int SASIA {get;set;}

      public float CMIMI {get;set;}

      public float TVSH { get; set; }

      public float TOTAL { get; set; }

      public float NENTOTALI { get; set; }

      public float ZBRITJA { get; set; }

      public float TOTALI { get; set; }

      public DateTime KOHA { get; set; }

      public string KASIERI { get; set; }

      public string KLIENTI { get; set; }

      public float VLERAETVSH { get; set; }

      public float VLERAPATVSH { get; set; }

      public int NRATIKUJVE { get; set; }

      public float TOTALIPCS { get; set; }

      public float VLERATVSHTOTAL { get; set; }





  }

  public void mbushe()

{

     arka_data dta  = new arka_data();

     for (int i = 0; i < dataTable.Rows.Count; i++)

    {

        dta.NR = int.Parse(txtnrfatures.Text);

        dta.VLERATVSHTOTAL = float.Parse( textBox1.Text);

        dta.BARKODI = int.Parse(dataTable.Rows[i][0].ToString());

        dta.EMERTIMI = dataTable.Rows[i][1].ToString();

        dta.SASIA = int.Parse(dataTable.Rows[i][2].ToString());

        dta.CMIMI = int.Parse(dataTable.Rows[i][3].ToString());

        dta.TVSH = int.Parse(dataTable.Rows[i][4].ToString());

        dta.NENTOTALI = float.Parse(txttotali.Text);

        dta.ZBRITJA = float.Parse(txtzbritja.Text);

        dta.TOTALI = float.Parse(totali.Text);

        dta.KOHA = DateTime.Now;

        dta.KASIERI = lbluser.Text;

        dta.KLIENTI = cmbklienti.Text;

        dta.VLERAETVSH = float.Parse(dataTable.Rows[i][7].ToString());

        dta.VLERAPATVSH = float.Parse(dataTable.Rows[i][6].ToString());

        dta.NRATIKUJVE = int.Parse(lblnumri.Text);

        dta.TOTALIPCS = float.Parse(dataTable.Rows[i][5].ToString());

    }

The idea it that this class handle the data from form one , and use it(insert it into sql) on form two . How should I pass the object in another form, or how should I refer it. Also another question is the class populated correctly (from : textbox, labels and datagridview ). The method mbushe collects data , and this data should be passed one frm2. But mu question is how to get this data on frm2

What I have tried:

I created the method on frm1 , but don't have any clue how to cont. on. I tried Arka. Mbushe but getting this error ' is a 'method', which is not valid in the given contextThe idea is that during the insertion of data on frm2 I use this data like this

cmd.Parameters.Add(new SqlParameter("@nrfatures", mbushe.NR);