Question

不知何故，这似乎在几年前工作;）或者我错过了什么？帮助将不胜感激提前谢谢。

else if (recStatus == 3)         
{
            ((TextBox)rref[1]).Text = read;

            //string readData = read;
            string[] readData = read.Split(new Char[] { ',' });


            //string[] readdata = read.Split(',');
            txtType.Text = readData[0];
            txtSerno.Text = readData[1]
            txtFirmware.Text = readData[2] + "." + readData[3];
}

Answer 1

此代码中的System.IndexOutOfRangeException意味着readData的值小于4，

你可以通过

知道元素的数量

string[] readData = read.Split(new Char[] { ',' });
MessageBox.Show(readData.Length.ToString()); //you will found it less then 4

Answer 2

我只是运行你的示例并且在控制台应用程序中没有错误（可能是因为你传递的文本放了一个调试器，看看实际文本是什么（（TextBox）rref [1]）。 ）：

class Program
    {
        static void Main(string[] args)
        {
            string read = "A401,192,2,8" ;

            string[] readData = read.Split(new Char[] { ',' });


            //string[] readdata = read.Split(',');
            string a = readData[0];
            string b = readData[1] + "." + readData[2];
            string c = readData[3];

            Console.WriteLine(a + b + c);
        }
    }

结果：

A401192.28
Press any key to continue . . .

System.IndexOutOfRangeException c＃

2 个答案: