public void klik(object sender, EventArgs e)
        {
            Type pom;
            pom = sender.GetType();
            if (this.proveriAktivniFormi())
            {
                if (pom.Name == "ToolStripMenuItem")
                {
                    ToolStripMenuItem nov = ((ToolStripMenuItem)sender);
                    if (nov.Tag == "Product")
                    {
                        AddProduct nova = new AddProduct();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();

                    }
                    else if (nov.Tag == "Company")
                    {
                        AddCompany nova = new AddCompany();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag=="Group")
                    {
                        ProductGroup nova = new ProductGroup();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "ProductC")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "CompanyP")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SProduct")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SCompany")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", false );
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SGroup")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Group", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                }
                else
                {
                    ToolStripButton nov = ((ToolStripButton)sender);

                    if (nov.Tag == "Product")
                    {
                        AddProduct nova = new AddProduct();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();

                    }
                    else if (nov.Tag == "Company")
                    {
                        AddCompany nova = new AddCompany();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag=="Group")
                    {
                        ProductGroup nova = new ProductGroup();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "ProductC")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "CompanyP")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SProduct")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SCompany")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SGroup")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Group", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                }
            }
            else
                MessageBox.Show("You can not open new form,because there is active one: \n - " + this.ActiveMdiChild.Name.ToString(), "Active Form - " + this.ActiveMdiChild.Name.ToString());

        }
        public void klik(object sender, EventArgs e)
        {
            Type pom;

            pom = sender.GetType();
            if (this.proveriAktivniFormi())
            {
                if (pom.Name == "ToolStripMenuItem")
                {
                    ToolStripMenuItem nov = ((ToolStripMenuItem)sender);
                    if (nov.Tag == "Product")
                    {
                        AddProduct nova = new AddProduct();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "Company")
                    {
                        AddCompany nova = new AddCompany();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "Group")
                    {
                        ProductGroup nova = new ProductGroup();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "ProductC")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "CompanyP")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SProduct")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SCompany")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SGroup")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Group", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                }
                else
                {
                    ToolStripButton nov = ((ToolStripButton)sender);

                    if (nov.Tag == "Product")
                    {
                        AddProduct nova = new AddProduct();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "Company")
                    {
                        AddCompany nova = new AddCompany();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "Group")
                    {
                        ProductGroup nova = new ProductGroup();
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "ProductC")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "CompanyP")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", true);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SProduct")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Product", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SCompany")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Company", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                    else if (nov.Tag == "SGroup")
                    {
                        AddProductsToCompany nova = new AddProductsToCompany("Group", false);
                        nova.MdiParent = this;
                        this.ActivateMdiChild(nova);
                        nova.Show();
                    }
                }
            }
            else
            {
                MessageBox.Show("You can not open new form,because there is active one: \n - " + this.ActiveMdiChild.Name.ToString(), "Active Form - " + this.ActiveMdiChild.Name.ToString());
            }
        }