我写了如下一段代码：
string loadCurrentpath = Directory.GetCurrentDirectory();
string loadpatch = loadCurrentpath + @"\bin\tab.txt";
string loadstrline;
string loadclassname;
FileStream loadfs = new FileStream(loadpatch,FileMode.Open,FileAccess.ReadWrite,FileShare.Read);
StreamReader loadsr = new StreamReader(loadfs,System.Text.Encoding.Default);
loadstrline = loadsr.ReadLine();
char loadtabflag0 = loadstrline[int j=loadstrline.Length-1];
string loadtabflag = loadtabflag0.ToString();
MessageBox.Show(loadtabflag,"提示");
loadclassname = loadstrline.Substring(0,loadstrline.Length-2);
MessageBox.Show(loadclassname,"提示");
MessageBox.Show(loadstrline,"提示");
.................................
messagebox是我用来测试逻辑是否正确的语句
编译执行后 跳出的messagebox显示的都完全正确，但是光标就停在“char loadtabflag0 = loadstrline[int j=loadstrline.Length-1];”这一行，提示未处理的“System.IndexOutOfRangeException”类型的异常出现在 mscorlib.dll 中。其他信息: 索引超出了数组界限请问大虾这是怎么回事？
string loadCurrentpath = Directory.GetCurrentDirectory();
string loadpatch = loadCurrentpath + @"\bin\tab.txt";
string loadstrline;
string loadclassname;
FileStream loadfs = new FileStream(loadpatch,FileMode.Open,FileAccess.ReadWrite,FileShare.Read);
StreamReader loadsr = new StreamReader(loadfs,System.Text.Encoding.Default);
loadstrline = loadsr.ReadLine();
char loadtabflag0 = loadstrline[int j=loadstrline.Length-1];
string loadtabflag = loadtabflag0.ToString();
MessageBox.Show(loadtabflag,"提示");
loadclassname = loadstrline.Substring(0,loadstrline.Length-2);
MessageBox.Show(loadclassname,"提示");
MessageBox.Show(loadstrline,"提示");
.................................
messagebox是我用来测试逻辑是否正确的语句
编译执行后 跳出的messagebox显示的都完全正确，但是光标就停在“char loadtabflag0 = loadstrline[int j=loadstrline.Length-1];”这一行，提示未处理的“System.IndexOutOfRangeException”类型的异常出现在 mscorlib.dll 中。其他信息: 索引超出了数组界限请问大虾这是怎么回事？
if (index > 0)
{
...
}
loadstrline.Length-2 ,loadstrline.Length-1均属此列
该是char loadtabflag0 = loadstrline[loadstrline.Length-1];
2。查看loadstrline.Length-1 的值，是否超出的数组的长度
loadstrline.Length-1怎么可能超出 读出的loadstrline不是空的
if(loadstrline.Length>0)
{
}