How to Enable and Disable all Validations Controls in a single page in Asp.net C#

For Disable validation controls in a page

public void DisableAllValidations(ControlCollection cntrls)
{
     foreach (Control ctrl in cntrls)
     {
        if (ctrl is CompareValidator)
            ((CompareValidator)ctrl).Enabled = false;
        if (ctrl is CustomValidator)
            ((CustomValidator)ctrl).Enabled = false;
        if (ctrl is RangeValidator)
            ((RangeValidator)ctrl).Enabled = false;
        if (ctrl is RegularExpressionValidator)
            ((RegularExpressionValidator)ctrl).Enabled = false;
        if (ctrl is RequiredFieldValidator)
            ((RequiredFieldValidator)ctrl).Enabled = false;
        DisableForm(ctrl.Controls);
     }
}

For Enable validation controls in a page

public void DisableAllValidations(ControlCollection cntrls)
{
     foreach (Control ctrl in cntrls)
     {
        if (ctrl is CompareValidator)
            ((CompareValidator)ctrl).Enabled = true;
        if (ctrl is CustomValidator)
            ((CustomValidator)ctrl).Enabled = true;
        if (ctrl is RangeValidator)
            ((RangeValidator)ctrl).Enabled = true;
        if (ctrl is RegularExpressionValidator)
            ((RegularExpressionValidator)ctrl).Enabled = true;
        if (ctrl is RequiredFieldValidator)
            ((RequiredFieldValidator)ctrl).Enabled = true;
        DisableForm(ctrl.Controls);
     }
}