CODEWITHSUNDEEP
c#
Shee
Shee

Reputation: 1925

how to use loops to access form elements in C#?

  if(pictureBox1.Tag.ToString() == "accept")
        {
            char room1 = Convert.ToChar(lbl_roomid1.Text);
            row1[13] = (byte)room1;

            DateTime sdt1 = DateTime.Parse(txt_sdate1.Text);
            //some code
         }
  if (pictureBox2.Tag.ToString() == "accept")
        {
            char room2 = Convert.ToChar(lbl_roomid2.Text);
            row1[13] = (byte)room2;

            DateTime sdt1 = DateTime.Parse(txt_sdate2.Text);
            //some code
         }

/* What if i wanted to type this code inside a loop?? i need to do the same for 10 pictureboxes */

Upvotes: 1

Views: 192

Answers (3)

Klongklong Guantero
Klongklong Guantero

Reputation: 11

Loops to access form elements in c#.

I usually use something like this.

Let say i have 10 picturebox i name it picturebox1 - picturebox10.

Then Do a loop for the number to loop to 10 i use a variable no inside it put this code

String Picturebox = "picturebox" + no.ToString();
Control[] oControl = Controls.Find(Picturebox, true);
foreach(Control foundControl in oControl)
{
  PictureBox foundControlA = foundControl as PictureBox;
  foundControlA.(methods or property here) = (what you want to put to foundControlA)

}

If you have more controls accompanied by each control you can use the same method. The hint here is that i use the same naming convention on my elements or object in my winforms and loop the variable no according to what you want.

Upvotes: 0

Andre Calil
Andre Calil

Reputation: 7692

Something like this:

    public void DoMagic(Label label, TextBox textBox)
    {
        //...
    }

And this:

        foreach (Control currentControl in this.Controls)
        {
            if (currentControl is PictureBox)
            {
                if (((PictureBox)currentControl).Tag.ToString().Equals("accept"))
                {
                    string controlId = currentControl.Name.Remove(0, 11);
                    string labelName = string.Concat("lbl_roomid", controlId);
                    string txtName = string.Concat("txt_sdate", controlId);

                    this.DoMagic(this.Controls.Find(labelName, true)[0] as Label, this.Controls.Find(txtName, true)[0] as TextBox);
                }
            }
        }

Regards

Upvotes: 4

AKX
AKX

Reputation: 169416

You could make an array of the elements.

The following is a little dirty, but...

class PBRoomDate {
  // Helper data holder class. Could probably be an anonymous class in C# 4.0
  public PictureBox PB;
  public Label RoomLabel;
  public TextBox DateText;
  PBRoomDate(PictureBox PB, Label RoomLabel, TextBox DateText) {
    this.PB = PB; this.RoomLabel = RoomLabel; this.DateText = DateText;
  }
}

// [...]

var pbRoomDates = new PBRoomDate[]{
  new PBRoomDate(pictureBox1, lbl_roomid1, txt_sdate1),
  new PBRoomDate(pictureBox2, lbl_roomid2, txt_sdate2),
  new PBRoomDate(pictureBox3, lbl_roomid3, txt_sdate3),
  // etc.
};

foreach(var pbRoomDate in pbRoomDates) {
  if(pbRoomDate.PB.Tag.ToString() == "accept") {
    row1[13] = (byte)Convert.ToChar(pbRoomDate.RoomLabel.Text);
    DateTime dt = DateTime.Parse(pbRoomDate.DateText.Text);
  }
}

The cleaner solution would be to use a custom UserControl to contain the three elements per "picturebox" and lay those out. That would also be easier to maintain and more extendable should the need arise.

Upvotes: 2

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