private void MessageTextBox_Leave(object sender, EventArgs e)
{
MessageTextBox.AddText(MessageTextBoxPlaceholder);
//if (String.IsNullOrWhiteSpace(MessageTextBox.Text))
//{
// MessageTextBox.ForeColor = Color.Gray;
// MessageTextBox.Font = new Font("Segoe UI Light", 14f, FontStyle.Regular);
// MessageTextBox.Text = MessageTextBoxPlaceholder;
//}
}