private void EditRealEstateToolStripMenuItem_Click(object sender, EventArgs e)
{
EditRealEstate add = new EditRealEstate();
add.MdiParent = this;
add.Show();
}
private void Button3_Click(object sender, EventArgs e)
{
EditRealEstate editRealEstate = new EditRealEstate(realEstateModel.RealEstateID);
editRealEstate.MdiParent = this.MdiParent;
editRealEstate.Show();
}