public string rd()
{
System.IO.StreamReader sr = new System.IO.StreamReader("123.dat", System.Text.Encoding.Default);
while (sr.Peek() >= 0)
{
return (sr.ReadLine());
}编译错误:并非所有的代码路径都返回值
{
System.IO.StreamReader sr = new System.IO.StreamReader("123.dat", System.Text.Encoding.Default);
while (sr.Peek() >= 0)
{
return (sr.ReadLine());
}编译错误:并非所有的代码路径都返回值
{
System.IO.StreamReader sr = new System.IO.StreamReader("123.dat", System.Text.Encoding.Default);
while (sr.Peek() >= 0)
{
return (sr.ReadLine());
}
return null;
}
{
StringCollection strDat = new StringCollection();
System.IO.StreamReader sr = new System.IO.StreamReader("123.dat", System.Text.Encoding.Default);
while (sr.Peek() >= 0)
{
strDat .add(sr.ReadLine());
}
return strDat;
}