文件在c#中读写

Question

我的代码是

        try
        {
            string mtellThemePath = ConfigurationManager.AppSettings["mtellThemePath"] == null ? Server.MapPath("~/App_Themes/") : ConfigurationManager.AppSettings["mtellThemePath"].Contains("%%") ? Server.MapPath("~/App_Themes") : ConfigurationManager.AppSettings["mtellThemePath"];

            string[] folderPaths = Directory.GetDirectories(mtellThemePath);
            string currentSurveyThemeName = hfSurveyName.Value + "_" + hfClientId.Value;
            string cloneSurveyThemeName = lstSurvey[0].SurveyName + "_" + Identity.Current.UserData.ClientId;
            string cloneSurveyThemePath = mtellThemePath + "\\" + lstSurvey[0].SurveyName + "_" + Identity.Current.UserData.ClientId;

            string cssFile = cloneSurveyThemePath + "\\" + cloneSurveyThemeName + ".css";
            string skinFile = cloneSurveyThemePath + "\\" + cloneSurveyThemeName + ".skin";

            string FileContentCSS = string.Empty;
            string FileContentSkin = string.Empty;

            foreach (string oFolder in folderPaths)
            {
                if (oFolder.Split('\\')[5] == currentSurveyThemeName)
                {
                    string[] cssSkinFiles = Directory.GetFiles(oFolder);
                    foreach (string objFile in cssSkinFiles)
                    {
                        if (objFile.Split('\\')[6].Split('.')[1] == "css")
                        {
                            FileContentCSS = File.ReadAllText(objFile);
                        }
                        if (objFile.Split('\\')[6].Split('.')[1] == "skin")
                        {
                            FileContentSkin = File.ReadAllText(objFile);
                        }
                    }
                }
            }
            Directory.CreateDirectory(cloneSurveyThemePath);
            File.Create(cssFile);
            File.Create(skinFile);
            if (FileContentCSS != string.Empty)
            {
                File.WriteAllText(cssFile, FileContentCSS);
            }
            if (FileContentSkin != string.Empty)
            {
                File.WriteAllText(skinFile, FileContentSkin);
            }
            return lstSurvey[0].SurveyGuid;
        }
        catch (Exception ex)
        {
            throw ex;
        }

它给出的错误是:

该进程无法访问文件'D:\ Projects\Mtelligence\Mtelligence.Web\App_Themes\Clone_ForCloneTest_-1\Clone_ForCloneTest_-1.css',因为它正被另一个进程使用.

请帮帮我..........如何解决这个问题

我试图从文件夹中读取.css,.skin文件,并将这些相同的文件写入另一个具有不同名称的文件夹中

Answer 1

看看这个:

File.Create(cssFile);
File.Create(skinFile);
if (FileContentCSS != string.Empty)
{
    File.WriteAllText(cssFile, FileContentCSS);
    // ...
}

实际上File.Createdos不只是创建一个文件,而是创建文件并返回一个打开的流.您的后续调用File.WriteAllText将尝试自己打开一个文件.在你的情况下(因为你不使用返回的流File.Create),只需删除它们:

if (FileContentCSS != string.Empty)
{
    File.WriteAllText(cssFile, FileContentCSS);
    // ...
}