Using a foreach loop to retrieve TextBox's within a GroupBox

Question

I have ten group boxes in a WinForm. Each group box contains 10 text boxes, and I have defined each TextBox name. How can I get each text box usin

Answer 1

foreach (var ctrl in gbDatabaseColumns.Controls)
{
     if (ctrl is DevExpress.XtraEditors.TextEdit)
     {
        StoreTextEdit(config, (ctrl as DevExpress.XtraEditors.TextEdit));
     }
}

Answer 2

Here is my suggestion:

foreach(var groupBox in Controls.OfType<GroupBox>())
{
    foreach(var textBox in groupBox.Controls.OfType<TextBox>())
    {
        // Do Something
    }
}

Or having it in one loop:

foreach (var textBox in Controls.OfType<GroupBox>().SelectMany(groupBox => groupBox.Controls.OfType<TextBox>()))
{
    // Do Something
}

Answer 3

try following code,

Control.ControlCollection coll = this.Controls;
foreach(Control c in coll) {
  if(c != null)
}

Answer 4

 foreach(Control gb in this.Controls)
 {
       if(gb is GroupBox)
       {
          foreach(Control tb in gb.Controls)
          {
             if(tb is TextBox)
             {
                 //here is where you access all the textboxs.
             }
          }
       }
 }

But if you have defined each TextBox name What's the point to get each TextBox by a loop?

You could define a List<TextBox> to hold reference of each TextBox while creating them, then just go though the List to get access of each TextBox.