private void btnNewPubKey_Click(object sender, EventArgs e) { toolStripStatusLabel1.Text = "正在提取公钥..."; string rText = Enc.getPublicKey(txtPrivatePEM.Text); tabControl1.SelectedIndex = 1; if (rText.Length == 0 && Enc.isErrorInfo()) { toolStripStatusLabel1.Text = "提取公钥操作失败"; MessageBox.Show(Enc.getErrorOnce(), "提取公钥操作失败", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { toolStripStatusLabel1.Text = "提取公钥完成。"; txtPublicPEM.Text = rText; } }