private void button3_Click(object sender, EventArgs e) { if (radioButton1.Checked) { dataGridView3 = MatrixCalculator.MatrixSub(dataGridView1, dataGridView2, dataGridView3); } else if (radioButton2.Checked) { dataGridView3 = MatrixCalculator.MatrixInversion(dataGridView1, dataGridView3); } else if (radioButton3.Checked) { dataGridView3 = MatrixCalculator.MatrixMul(dataGridView1, dataGridView2, dataGridView3); } else if (radioButton4.Checked) { dataGridView3 = MatrixCalculator.MatrixEquals(dataGridView1, dataGridView2, dataGridView3); } }