change color of all controls inside the form in c#

Question

in one button click event i want to change form color and all control color inside the form(textbox,label,gridview,combobox) ,,so i given code like this:

  foreach (Control c in MyForm.Controls) {
    c.BackColor = Colors.Black;
    c.ForeColor = Colors.White;
}

but this is only changing the the label and group box color.
not able to change form and grid view column heading .
group box heading color.
how i can change color all controls inside the form
any help is very appreciable...

Answer 1

You have to use a recursive function

www.dotnetperls.com/recursion

something along the lines of:

foreach (Control c in MyForm.Controls) 
{
   UpdateColorControls(c);
}


public void UpdateColorControls(Control myControl)
{
   myControl.BackColor = Colors.Black;
   myControl.ForeColor = Colors.White;
   foreach (Control subC in myControl.Controls) 
   {
       UpdateColorControls(subC);
   } 
}

Please not that not all controls have a property ForeColor and BackColor

Update

if you wan't for instance only the textboxes to change:

public void UpdateColorControls(Control myControl)
{
   if (myControl is TextBox)
   {
       myControl.BackColor = Colors.Black;
       myControl.ForeColor = Colors.White;
   }
   if (myControl is DataGridView)
   {
      DataGridView MyDgv = (DataGridView)myControl;
      MyDgv.ColumnHeadersDefaultCellStyle.BackColor = Colors.Black;
      MyDgv.ColumnHeadersDefaultCellStyle.ForeColor = Colors.White;
   }

   // Any other non-standard controls should be implemented here aswell...

   foreach (Control subC in myControl.Controls) 
   {
       UpdateColorControls(subC);
   } 
}

Answer 2

You can check control's type and do different things for specific controls. For example for datagridviews :

if (c.GetType().ToString().IndexOf("DataGridView") != -1)
{
  DataGridView dgv = (DataGridView)c;
  dgv.DefaultCellStyle.ForeColor = Color.Red;
}