路径不是法律形式[关闭]

Question

当 debug..Button1 是关于 zip 文件时会出现此错误，然后将其从源复制到目标..在删除功能中，它会删除创建时间早于给定时间的文件.. 注意：我是新手，所以如果可能的话，请在你的回答中提供很多细节。

private void button1_Click(object sender, EventArgs e)
{
    Backup._MAIN takeBackUp = new Backup._MAIN();
    try
    {
        takeBackUp.copyFile(textBox1.Text, textBox2.Text);
         MessageBox.Show("done");  //do stuff
    }

    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

private void button2_Click(object sender, EventArgs e)
{
    bool dater;
    string err = "";
    Backup._MAIN formDelete = new Backup._MAIN();
    DateTime dtp = dateTimePicker1.Value;
    dater = formDelete.deleteFiles(textBox3.Text, dtp,out err);
    if (err.Length > 0)
        MessageBox.Show(err);
    else
        MessageBox.Show("Done!");
}

DLL：

public void copyFile(string sSource,string sDestination)
{
    string sourcePath = sSource;
    string targetPath = sDestination;
    Directory.GetFiles(sourcePath,"",SearchOption.AllDirectories);

    string myBackUp="";
    string fileName;

    if (!System.IO.Directory.Exists(targetPath))
    {
        System.IO.Directory.CreateDirectory(targetPath);
    }

    using (ZipFile zip = new ZipFile(targetPath))
    {
        zip.AddDirectory(sourcePath, "");
        zip.Save(myBackUp);
    }

    if (System.IO.Directory.Exists(sourcePath))
    {
        string[] fileList = System.IO.Directory.GetFiles(sourcePath, "*.rar*");

        foreach (string files in fileList)
        {
            // from the path.
            fileName = System.IO.Path.GetFileName(files);
            targetPath = System.IO.Path.Combine(targetPath, fileName);
            System.IO.File.Copy(files, targetPath, true);
        }
    }
}

public bool deleteFiles(string sSource, DateTime dOlder, out string sError)
{
    string path = sSource;
    sError = "";
    try
    {
        string[] fileList = Directory.GetFiles(path);
        foreach ( string fname in fileList )
        {

            if ( File.GetCreationTime(path + fname) <= dOlder )
            {
                File.Delete(path + fname);
            }
        }
        return true;
    }

    catch ( Exception ex )
    {
        sError = ex.ToString();
        return false;
    }
}

Answer 1

Directory.GetFiles() 返回完整路径名。

但是，请考虑您的代码：

string[] fileList = Directory.GetFiles(path);

foreach ( string fname in fileList)
{
    if ( File.GetCreationTime(path + fname) <= dOlder) 

您在执行path + fname 时为路径添加前缀，这将导致路径无效，因为fname 已包含该路径。

如果路径包含驱动器号，例如 C:\，那么您最终会得到类似 C:\MyDir\C:\MyDir\MyFile.txt 的路径，这会给您带来您所看到的错误。

您只需要做File.GetCreationTime(fname)（File.Delete() 也是如此。