/// <summary> /// 发送消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button2_Click(object sender, EventArgs e) { if (comboBox1.SelectedItem.ToString() != "") { server.PutMessage(comboBox1.SelectedItem.ToString(), richTextBox2.Text); richTextBox2.Text = ""; ShowMessage(comboBox1.SelectedItem.ToString() + ":发送成功!\r\n"); } else { MessageBox.Show("请选择要发送的客户端!"); } }