WinForm Method for Traversing All Child Controls of a Form

This article illustrates the method of WinForm traversing all child controls of a form. Share it for your reference, as follows:

/// <summary>
/// C#  Only child controls of the control are traversed, not grandchildren 
/// When a control has child controls, you need to iterate recursively to list all the controls on the control 
/// </summary>
/// <typeparam name="T"> Control type </typeparam>
/// <param name="control"> Controls to traverse </param>
/// <param name="controlsName"> Control name </param>
/// <returns></returns>
public static T GetControl<T>(Control control, string controlsName) where T : Control
{
  if (control == null) return null;
  Control _control;
  for (int i = 0; i < control.Controls.Count; i++)
  {
    _control = control.Controls[i];
    if (_control == null) return null;
    if (_control.Name == controlsName && _control is T)
      return (T)_control;
    if (_control.HasChildren)
    {
      _control = GetControl<T>(_control, controlsName);
      if (_control != null)
        return (T)_control;
    }
  }
  return null;
}
/// <summary>
///  Traverse all child controls of the form 
/// </summary>
/// <typeparam name="T"> Control type </typeparam>
/// <param name="form"> Form name </param>
/// <param name="controlsName"> Control name </param>
/// <returns></returns>
public static T GetControl<T>(Form form, string controlsName) where T : Control
{
  T _Control = null;
  for (int i = 0; i < form.Controls.Count; i++)
  {
    _Control = GetControl<T>(form.Controls[i], controlsName);
    if (_Control != null)
      return _Control;
  }
  return null;
}

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