Copy some data from a form to another

[beginerC#]

Hi! I am a beginer in C# and I have 2 forms in a project. The first one contains a dataGridview with 3 columns: nr,date and obs and a button. when i select a row and click on a button i want to copy the current nr,date and obs in some textboxes from the second form. how do i refer to thouse from the second form? Can anyone tell me, please? thanks.

[DdoubleD]

Hi! I am a beginer in C# and I have 2 forms in a project. The first one contains a dataGridview with 3 columns: nr,date and obs and a button. when i select a row and click on a button i want to copy the current nr,date and obs in some textboxes from the second form. how do i refer to thouse from the second form? Can anyone tell me, please? thanks.

One way you could do it is to copy/paste from the Clipboard .

Another way is to directly pass that data to the second form.

What is your usage preference?

[DarthC#]

Do you have an instance of the second form open prior to the transfer or do you intend to create it on the push of the button.

[beginerC#]

One way you could do it is to copy/paste from the Clipboard .

Another way is to directly pass that data to the second form.

What is your usage preference?

I don't know what involves each one of this ways.. but i think the directly pass the data to the second form is better. can u tell me how to do that? thanks

[beginerC#]

Do you have an instance of the second form open prior to the transfer or do you intend to create it on the push of the button.

I want to create it when i click the button.

[chandru7]

copy means,you wants to pass the values from one page to another right,try session or hiddenfield.

[Geekitygeek]

copy means,you wants to pass the values from one page to another right,try session or hiddenfield.

Those are both web concepts and wont help in a winforms environment.

If you are creating an instance of the form2 when you click the button you can add the variables you want to pass to form2's constructor method:

//in form2
        private string _no, obs;
        private DateTime _date;

        private Form2(string no, DateTime date, string obs)
        {
            _no = no;
            _date = date;
            _obs = obs;
        }


//in form1
        private void button1_Click(object sender, EventArgs e)
        {
            string number = "123";
            DateTime date = DateTime.Now;
            string obs = "none";

            Form2 frm2 = new Form2(number, date, obs);
            frm2.Show();
        }

Remember to mark the thread as solved if this answered your question :)

[beginerC#]

Those are both web concepts and wont help in a winforms environment.

If you are creating an instance of the form2 when you click the button you can add the variables you want to pass to form2's constructor method:

//in form2
        private string _no, obs;
        private DateTime _date;

        private Form2(string no, DateTime date, string obs)
        {
            _no = no;
            _date = date;
            _obs = obs;
        }


//in form1
        private void button1_Click(object sender, EventArgs e)
        {
            string number = "123";
            DateTime date = DateTime.Now;
            string obs = "none";

            Form2 frm2 = new Form2(number, date, obs);
            frm2.Show();
        }

Remember to mark the thread as solved if this answered your question :)

maybe i'm missing something, but it doesn't work, too :(

[patrickpan]

TestData.cs

public class TestData
    {
        public string No { get; set; }

        public string OPS { get; set; }

        public DateTime Date { get; set; }
    }

Form1.cs

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            List<TestData> list = new List<TestData>();
            list.Add(new TestData() { No = "1", OPS = "test1", Date = DateTime.Now.AddDays(-1) });
            list.Add(new TestData() { No = "2", OPS = "test2", Date = DateTime.Now.AddDays(-2) });
            list.Add(new TestData() { No = "3", OPS = "test3", Date = DateTime.Now.AddDays(-3) });

            dataGridView1.DataSource = list;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (dataGridView1.SelectedRows.Count == 0)
                return;

            DataGridViewRow dgr = dataGridView1.SelectedRows[0];
            string no = dgr.Cells["No"].Value.ToString();
            string ops = dgr.Cells["OPS"].Value.ToString();
            DateTime date = (DateTime)dgr.Cells["Date"].Value;

            Form2 frm = new Form2(no, ops, date);
            frm.ShowDialog();
        }
    }

Form2.cs

public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        public Form2(string no, string ops, DateTime date)
        {
            InitializeComponent();
            this.No = no;
            this.OPS = ops;
            this.Date = date;
        }

        public string No
        {
            get { return textBox1.Text; }
            set { textBox1.Text = value; }
        }

        public string OPS
        {
            get { return textBox2.Text; }
            set { textBox2.Text = value; }
        }

        public DateTime Date
        {
            get { return dateTimePicker1.Value; }
            set { dateTimePicker1.Value = value; }
        }
    }

[sknake]

Main form:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace daniweb.editform
{
  public partial class frmMain : Form
  {
    private DataTable _dt;

    public frmMain()
    {
      InitializeComponent();
    }

    private static DataTable GetData()
    {
      DataTable result = new DataTable();
      //nr,date and obs 
      result.Columns.Add("nr", typeof(int));
      result.Columns.Add("date", typeof(DateTime));
      result.Columns.Add("obs", typeof(string));
      for (int i1 = 1; i1 <= 50; i1++)
      {
        DataRow row = result.NewRow();
        row["nr"] = i1;
        row["date"] = DateTime.Today.AddDays(i1);
        row["obs"] = Guid.NewGuid().ToString();
        result.Rows.Add(row);
      }
      return result;
    }

    private void RefreshData()
    {
      if (_dt != null)
      {
        _dt.Dispose();
      }
      _dt = GetData();
      dataGridView1.DataSource = _dt;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
      RefreshData();
    }

    private void buttonAdd_Click(object sender, EventArgs e)
    {
      using (frmEdit frm = new frmEdit())
      {
        StronglyTypedRow strongRow = frm.Edit(null);
        if (strongRow != null)
        {
          DataRow row = _dt.NewRow();
          row.BeginEdit();
          row["nr"] = strongRow.NR;
          row["date"] = strongRow.Date;
          row["obs"] = strongRow.OBS;
          row.EndEdit();
          _dt.Rows.Add(row);
          _dt.AcceptChanges();
        }
      }
    }

    private void buttonEdit_Click(object sender, EventArgs e)
    {
      if (dataGridView1.SelectedRows.Count != 1) return;

      DataRow row = (dataGridView1.SelectedRows[0].DataBoundItem as DataRowView).Row;
      StronglyTypedRow strongRow = new StronglyTypedRow(row);
      using (frmEdit frm = new frmEdit())
      {
        strongRow = frm.Edit(strongRow);
        if (strongRow != null)
        {
          row.BeginEdit();
          row["nr"] = strongRow.NR;
          row["date"] = strongRow.Date;
          row["obs"] = strongRow.OBS;
          row.EndEdit();
          _dt.AcceptChanges();
        }
      }
    }

    private void buttonDelete_Click(object sender, EventArgs e)
    {
      if (dataGridView1.SelectedRows.Count != 1) return;
      if (MessageBox.Show("Delete row", this.Text, MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
      {
        DataRow row = (dataGridView1.SelectedRows[0].DataBoundItem as DataRowView).Row;
        row.Delete();
        _dt.AcceptChanges();
      }
    }

    private void buttonExit_Click(object sender, EventArgs e)
    {
      this.Close();
    }

  }
}

Strong row:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;

namespace daniweb.editform
{
  public class StronglyTypedRow
  {
    public int NR { get; set; }
    public DateTime Date { get; set; }
    public string OBS { get; set; }

    public StronglyTypedRow()
    {
    }
    public StronglyTypedRow(DataRow row)
      : this(Convert.ToInt32(row["nr"]), Convert.ToDateTime(row["date"]), Convert.ToString(row["obs"]))
    {
    }
    public StronglyTypedRow(int NR, DateTime Date, string OBS)
      :this()
    {
      this.NR = NR;
      this.Date = Date;
      this.OBS = OBS;
    }
  }
}

Edit form:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace daniweb.editform
{
  public partial class frmEdit : Form
  {
    private StronglyTypedRow result;

    public frmEdit()
    {
      InitializeComponent();
    }

    /// <summary>
    /// Edit a row. Pass a null value to add a new row.
    /// </summary>
    /// <param name="row"></param>
    public StronglyTypedRow Edit(StronglyTypedRow row)
    {
      result = row;
      this.ShowDialog();
      return result;
    }

    private void frmEdit_Load(object sender, EventArgs e)
    {
      if (result != null)
      {
        textBoxNR.Text = result.NR.ToString("F0");
        textBoxOBS.Text = result.OBS;
        dateTimePicker1.Value = result.Date;
      }
      result = null;
    }


    private void buttonExit_Click(object sender, EventArgs e)
    {
      this.Close();
    }

    private void buttonSave_Click(object sender, EventArgs e)
    {
      errorProvider1.Clear();
      int NR;
      if (!int.TryParse(textBoxNR.Text, out NR))
      {
        errorProvider1.SetError(textBoxNR, "Invalid integral value");
      }
      result = new StronglyTypedRow(NR, dateTimePicker1.Value, textBoxOBS.Text);
      this.Close();
    }

  }
}

Project is attached.

[beginerC#]

thanks a lot! it works!