private void formUserToolStripMenuItem_Click(object sender, EventArgs e) { form4.Show(); }
private void умножениеToolStripMenuItem_Click(object sender, EventArgs e) { Form umnoj = new Form4(); umnoj.Show(); }
private void button3_Click(object sender, EventArgs e) { Form4 form4 = new Form4(); form4.Show(); }
private void лабораторнаяРабота3ToolStripMenuItem_Click(object sender, EventArgs e) { Form4 Form4 = new Form4(this); Form4.Show(); }