需要发送数字 151510

大端序发送就是 ：00 02 4F D6

 string smallData = textBox1.Text;//小端数据if (smallData == ""){MessageBox.Show("请输入初始里程", "错误",MessageBoxButtons.OK, MessageBoxIcon.Exclamation);textBox1.Text = "";return;}if (!IsNumeric(smallData)){MessageBox.Show("初始里程必须是数字", "错误",MessageBoxButtons.OK, MessageBoxIcon.Exclamation);textBox1.Text = "";return;}double doubleSmallData = Convert.ToDouble(smallData) * 10;int intSmallData = Convert.ToInt32(doubleSmallData);//int x = 439041118;  // 十六进制为 1A2B3C5E  intSmallDatastring s = null;byte[] b = BitConverter.GetBytes(intSmallData);s = BitConverter.ToString(b);textData = "01 0" + comboBox2.SelectedIndex + " 00 00 " + s + " ";retryCounts = 0;sendCounts = 0;bool result = sendMsg(textBox2.Text, textData);