Question

我想知道我是否想要跟踪递归方法中的文件夹数量，我怎么能这样做，这样每次在下面代码的循环中计数器都不会被重置？

// how to keep track of the number of sourceFolder that has been processed?
public void recursiveMethod(SPFolder sourceFolder, SPFolder destinationFolder)
{
    int totalNumberOfFiles = sourceFolder.SubFolders.Count;

    foreach (SPFolder sourceSubFolder in sourceFolder.SubFolders)
    {
        if (true)
        {
            SPFolder destSubFolder = null;
            if (true)
            {
                destSubFolder = doSomething();
            }
            else
            {
                destSubFolder = doSomethingElse();
            }
        }
        recursiveMethod(sourceSubFolder, destSubFolder);
    }
}

此处的目标是向用户显示“处理文件夹 15 / 100”之类的内容。我无法保留文件夹数而不重置它。假设：文件夹本身没有唯一的ID。

感谢。

Answer 1

此代码允许您显示到目前为止已处理的文件夹数。然而，它并没有得到文件夹的总量，因为这很棘手：在整个递归完成之前你无法知道：

public void recursiveMethod(SPFolder sourceFolder, SPFolder destinationFolder)
{
    int folderIndex = 1;

    recursiveMethod(sourceFolder, destinationFolder, ref folderIndex);
}

public void recursiveMethod(SPFolder sourceFolder, SPFolder destinationFolder, ref folderIndex)
{
    int totalNumberOfFiles = sourceFolder.SubFolders.Count;

    foreach (SPFolder sourceSubFolder in sourceFolder.SubFolders)
    {
        // Display processed folder
        Console.WriteLine("Processing folder " + folderIndex);

        if (true)
        {
            SPFolder destSubFolder = null;

            if (true)
            {
                destSubFolder = doSomething();
            }
            else
            {
                destSubFolder = doSomethingElse();
            }
        }

        // Increase processed folder index
        folderIndex++;

        // Recursive call
        recursiveMethod(sourceSubFolder, destSubFolder, ref folderIndex);
    }
}

Answer 2

你能把count变量作为参数传递给方法吗？

跟踪递归调用中的项目编号C＃

2 个答案: