Question

我有<代码>的夹。在大多数档案的名称中,我想用另一个插图取代具体的插图。

这里是我撰写的。

  private void btnGetFiles_Click(object sender, EventArgs e)
    {
        string dir = tbGetFIles.Text;
        List<string> FileNames = new List<string>();

        DirectoryInfo DirInfo = new DirectoryInfo(dir);

        foreach (FileInfo File in DirInfo.GetFiles())
        {
            FileNames.Add(File.Name);       
        }

        lbFileNames.DataSource = FileNames;
    }

Here I extract all file names in List Box.

    private void btnReplace_Click(object sender, EventArgs e)
    {
        string strReplace = tbReplace.Text; // The existing string
        string strWith = tbWith.Text; // The new string

        string dir = tbGetFIles.Text;
        DirectoryInfo DirInfo = new DirectoryInfo(dir);
        FileInfo[] names = DirInfo.GetFiles();


        foreach (FileInfo f in names)
        {
            if(f.Name.Contains(strReplace))
            {
                f.Name.Replace(strReplace, strWith);
            }

        }

在这里,我想做的是替代,但事情是错误的。什么?

Answer 1

你想改变磁盘上的档案名称。如果是的话,你需要使用<代码>File.MoveA/60/8诉s. 更改实际编号,即档案名称。

您提出的另一个错误是Replace。 http://www.un.org/Depts/DGACM/index_chinese.htm 看到你需要将新的价值重新分配给一个变量

string newName = f.Name.Replace(strReplace, strWith);
File.Move(f.Name, newName);

Answer 2

f.Name is a read-only property. f.Name.Replace(..) simply returns a new string with the filename you want, but never actually changes the file.
I suggest something along the following, though I haven t tested it:

File.Move(f.Name, f.Name.Replace(strReplace, strWith));

Answer 3

Replace return another string, it doesn t change the original string.
So you need to write

string newName = f.Name.Replace(strReplace, strWith);

of course this doesn t change the name of the file on disk.
If that was your intention then you should look at

File.Move(f.Name, newName);

还铭记这一档案。如果存在目的档案,则调查将例外。

See here for a example

Answer 4

从一看,似乎你不把所替换的地块重新分配给你。引证:

string NewFileName = f.Name.Replace(strReplace, strWith);
File.Copy(f.Name, NewFileName);
File.Delete(f.Name);

Answer 5

页: 1 替换。相反,它正在恢复新的扼杀。

你们需要把自己的法典改成像:

if(f.Name.Contains(strReplace)) 
{ 
    string newFileName = f.Name.Replace(strReplace, strWith); 
    //and work here with your new string
}

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