c# – 参数计数不匹配

遇到下列代码段麻烦.我得到一个参数计数不匹配.

我不得不写这个,因为多线程和不安全的更新的问题.

delegate void data_INPUTDelegate(object sender, System.IO.Ports.SerialDataReceivedEventArgs e);
    private void data_INPUT(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
    {
        string data = serialPort.ReadLine();

        string[] tokens = data.Split(':');
        if (tokens[0] == "$SENSOR")
        {
            if (label_sensorValue.InvokeRequired)
            {
                data_INPUTDelegate del = new data_INPUTDelegate(data_INPUT);
                label_sensorValue.Invoke(del,new object[] {tokens[1]});
            }
            else
            {
                label_sensorValue.Text = tokens[1];
            }
        }
    }

我猜这个错误来自于这一行：

label_sensorValue.Invoke(del,new object[] {tokens[1]});

您只传递一个参数到del(令牌[1]),但它有两个参数(发件人和e)

编辑：仔细阅读代码后,建议您创建一个SetSensorValue方法来设置label_sensorValue的值.现在,您尝试使用错误的参数调用事件处理程序.

private void data_INPUT(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
    string data = serialPort.ReadLine();

    string[] tokens = data.Split(':');
    if (tokens[0] == "$SENSOR")
    {
        SetSensorValue(tokens[1]);
    }
}

delegate void SetSensorValueDelegate(string value);

private void SetSensorValue(string value)
{
    if (label_sensorValue.InvokeRequired)
    {
        SetSensorValueDelegate del = new SetSensorValueDelegate(SetSensorValue);
        label_sensorValue.Invoke(del, new object[] {value});
    }
    else
    {
        label_sensorValue.Text = value;
    }
}