define a parameter in event

Question

I have a TableLayoutPanel (tlp) with rows. I add rows manually with a button. Every row which I created below the last one, has a button that will remove the row from tlp. Here is the code:

    private void btnTSatirEkle_Click(object sender, EventArgs e)
    {
        tlpTDersRows = tlpTDers.RowCount;

        tlpTDers.RowCount++;

        DateTimePicker dtp = new DateTimePicker();
        dtp.Name = "dtpTR" + (tlpTDersRows).ToString();
        DateTimePicker dtp2 = (DateTimePicker)tlpTDers.Controls["dtpTR" + (tlpTDersRows - 1).ToString()];
        dtp.Value = dtp2.Value.AddDays(1);
        dtp.Dock = DockStyle.Fill;
        tlpTDers.Controls.Add(dtp, 0, tlpTDersRows);

        ComboBox comb = new ComboBox();
        comb.Name = "cbxTR" + (tlpTDersRows).ToString();
        comb.Dock = DockStyle.Fill;
        comb.Items.AddRange(devamDur);
        tlpTDers.Controls.Add(comb, 1, tlpTDersRows);

        TextBox txtr = new TextBox();
        txtr.Name = "txtTR" + (tlpTDersRows).ToString();
        txtr.Dock = DockStyle.Fill;
        txtr.Multiline = true;
        tlpTDers.Controls.Add(txtr, 2, tlpTDersRows);

        oldX = btnTSatirEkle.Location.X;
        oldY = btnTSatirEkle.Location.Y;

        Button buttonNew = new Button();
        buttonNew.Name = "btnDelTR" + (tlpTDersRows - 1).ToString();
        buttonNew.Text = "-";
        buttonNew.Location = new Point(oldX, oldY);
        buttonNew.Size = btnTSatirEkle.Size;
        this.Controls.Add(buttonNew);
        buttonNew.Click += new EventHandler(SatirSil);  //I get error here, even I write SatirSil(sender, e, tlpTDersRows - 1)..

        btnTSatirEkle.Location = new Point(644, tlpTDers.Controls["dtpTR" + tlpTDersRows.ToString()].Location.Y + 12);

        tlpTDersRows++;
    }

    private void SatirSil(object sender, EventArgs e, int rowNo)
    {
       //codes
    }

I want to send the row number as parameter to SatirSil method (which will be called when I click on buttonNew_Click event).

Any ideas?

Answer 1

Change:

buttonNew.Click += new EventHandler(SatirSil);

to

buttonNew.Click += new EventHandler((snd, ev)=>SatirSil(snd,ev,rowno));

or using your own variable (i.e. tlpTDersRows) it could be like this:

buttonNew.Click += new EventHandler((snd, ev)=>SatirSil(snd,ev,tlpTDersRows-1));