RegEx - 摆脱双重空格？

Question

我有去的,取代了"无效"字符(由我正则表达式定义)与blankspace的应用程序.我想要它,以便如果文件名中有2个或更多空格,则修剪一个.例如:

Deal A & B.txt在我的应用程序运行后,将重命名为Deal A   B.txt(3个空格b/w A和B).我想要的是这样的:( Deal A B.txtA和B之间的一个空格).

我试图确定如何做到这一点 - 我想我的应用程序将通过所有的文件名至少运行一次,以取代无效字符,然后通过文件名再次运行甩掉多余的空白.

任何人都可以帮我吗？
这是我目前用于替换无效字符的代码:

public partial class CleanNames : Form
{
    public CleanNames()
    {
        InitializeComponent();

    }

    public void Sanitizer(List<string> paths)
    {
        string regPattern = (@"[~#&$!%+{}]+");
        string replacement = " ";

        Regex regExPattern = new Regex(regPattern);


        StreamWriter errors = new StreamWriter(@"S:\Testing\Errors.txt", true);
        var filesCount = new Dictionary<string, int>();


        dataGridView1.Rows.Clear();

           try
            {

              foreach (string files2 in paths)
              {

                string filenameOnly = System.IO.Path.GetFileName(files2);
                string pathOnly = System.IO.Path.GetDirectoryName(files2);
                string sanitizedFileName = regExPattern.Replace(filenameOnly, replacement);
                string sanitized = System.IO.Path.Combine(pathOnly, sanitizedFileName);


                if (!System.IO.File.Exists(sanitized))
                {
                    DataGridViewRow clean = new DataGridViewRow();
                    clean.CreateCells(dataGridView1);
                    clean.Cells[0].Value = pathOnly;
                    clean.Cells[1].Value = filenameOnly;
                    clean.Cells[2].Value = sanitizedFileName;
                    dataGridView1.Rows.Add(clean);

                    System.IO.File.Move(files2, sanitized);
                }

                else
                {
                    if (filesCount.ContainsKey(sanitized))
                    {
                        filesCount[sanitized]++;
                    }
                    else
                    {
                        filesCount.Add(sanitized, 1);
                    }
                    string newFileName = String.Format("{0}{1}{2}",
                    System.IO.Path.GetFileNameWithoutExtension(sanitized),
                    filesCount[sanitized].ToString(),
                    System.IO.Path.GetExtension(sanitized));
                    string newFilePath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(sanitized), newFileName);
                    System.IO.File.Move(files2, newFilePath);
                    sanitized = newFileName;

                    DataGridViewRow clean = new DataGridViewRow();
                    clean.CreateCells(dataGridView1);
                    clean.Cells[0].Value = pathOnly;
                    clean.Cells[1].Value = filenameOnly;
                    clean.Cells[2].Value = newFileName;

                    dataGridView1.Rows.Add(clean);

                }




              }
            }
           catch (Exception e)
           {
               errors.Write(e);
           }


    }

    private void SanitizeFileNames_Load(object sender, EventArgs e)
    { }

    private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
    {

    }

    private void button1_Click(object sender, EventArgs e)
    {
        Application.Exit();
    }


}

问题是,重命名后并非所有文件都具有相同数量的空白.作中,我可以有Deal A&B.txt它的重命名后会成为Deal A B.txt(1个空间的B/W A和B -这是好的).但我也将具有像文件: Deal A & B & C.txt其中重命名后为:Deal A   B   C.txt(A,B和C之间3位-不能接受).

有没有人有任何想法/代码如何实现这一目标？

Answer 1

做当地的相当于:

s/\s+/ /g;