private void 前回の結果ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     timer1.Enabled = false;
     Form3 form3 = new Form3();
     form3.form1 = this;
     form3.ShowDialog();
     timer1.Enabled = true;
 }
 private void button4_Click(object sender, EventArgs e)
 {
     timer1.Enabled = false;
     Form3 form3 = new Form3();
     form3.form1 = this;
     form3.ShowDialog();
     timer1.Enabled = true;
 }