c# - 替换方法不起作用c#？这里有什么问题

Question

我需要一个通过查找文件创建的 url，可以获取该文件的 url，我得到了这个：

"C:\\dev\\vsprojects\\MvcApplication4\\MvcApplication4\\hard.txt"

一切都运行良好，当我更换\\by时问题就来了，\但它不起作用！这是代码：

string ruta = "";

foreach (var readText in
    Directory.GetFiles(@"C:\dev\vsprojects\MvcApplication4\MvcApplication4",
    "stringCon.txt", SearchOption.AllDirectories))
{
    ruta = readText;
}

ruta = ruta.Replace(@"\\", @"\");
//in debugger mode says ruta parameter still having
//the \\ and i cant get the content of the txt file
TextReader ReadTXT_file = new StreamReader(ruta);
//and here says that StringConexion is null, why??
string StringConexion = ReadTXT_file.ReadLine();

ReadTXT_file.Close();

Answer 1

好吧，不完全确定您要做什么，但是，您的“替换”代码在循环之外。你需要它，否则你只会替换最后一个文件的文本。

public class e{


        string ruta = "";

                foreach(var readText in Directory.GetFiles(@"C:\dev\vsprojects\MvcApplication4\MvcApplication4", "stringCon.txt", SearchOption.AllDirectories)) {

                    ruta = readText;
                    ruta = ruta.Replace(@"\\", @"\");
    //in debugger mode says ruta parameter still having the \\ and i cant get the content of the txt file
                TextReader ReadTXT_file = new StreamReader(ruta);
    //and here says that StringConexion is null, why??
                string StringConexion = ReadTXT_file.ReadLine();//

                ReadTXT_file.Close(); 

                }



}

编辑

刚刚意识到这甚至不会编译。而你的班级被称为“e”。我对这一切有点害怕，但我还是建议用这种格式来创建类/方法......

public class MyProperClassName
{
    public void MyMethodName()
    {
        // do your file text operations here
    }
}