C# 文件、文件夹 是否存在、创建

/// <summary>
/// 判断文件是否存在
/// </summary>
/// <param name="fullName">文件全名称（路径和文件名）</param>
/// <returns></returns>
public static bool fileExist(string fullName)
{
    bool response = false;
    if (File.Exists(fullName))
    {
        response = true;
    }
    return response;
}
/// <summary>
/// 创建文件
/// </summary>
/// <param name="fullName">文件全名称（路径和文件名）</param>
public static void fileCreate(string fullName)
{
    File.Create(fullName);
}

/// <summary>
/// 判断文件夹是否存在
/// </summary>
/// <param name="path">路径</param>
/// <returns></returns>
public static bool folderExist(string path)
{
    bool response = false;

    if (Directory.Exists(path))
    {
        response = true;
    }
    return response;
}

/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="path">路径</param>
public static void folderCreate(string path)
{
    Directory.CreateDirectory(path);
}