小编Chr*_*ana的帖子

我想实现一个IEnumerator.但它会导致错误

public class WachableDictionaryEnumerator : IEnumerator<TVal>
{
    private TVal[] a;
    private int len;
    public bool MoveNext()
    {
        len = len + 1;
        return len < a.Length;
    }
    public object Current
    {
        get
        {
            return a[len];
        }
    }
    public TVal Current
    {
        get
        {
            return a[len];
        }
    }
    public void Dispose()
    {
        a = null;
        len = 0;
    }
    public void Reset()
    {
        len = 0;
    }
}

错误是:

错误5类型'CPS.Manipulation.WatchableDictionary.WachableDictionaryEnumerator'已包含'当前'的定义D:\ CE\Supins\Cyan Pembuat Soal\Required Manipulation\Class1.cs 32 25所需的操作

但是如果我删除了一个Current对象,那么错误就是

错误21'CPS.Manipulation.WatchableDictionary.WachableDictionaryEnumerator'未实现接口成员'System.Collections.Generic.IEnumerator.Current'.'CPS.Manipulation.WatchableDictionary.WachableDictionaryEnumerator.Current'无法实现'System.Collections.Generic.IEnumerator.Current',因为它没有匹配的返回类型'TVal'.D:\ CE\Supins\Cyan Pembuat Soal\Required …

我想尝试制作自己的文件浏览器.我有一个算法来枚举所有驱动器中的所有目录.但它运行得太慢了.这是我的代码:

public ExplorerForm()
{
    InitializeComponent();
    this.SuspendLayout();//Without this, it will be far more slow again!
    string[] a = System.IO.Directory.GetLogicalDrives();// a is used for drive array
    for(int b = 0; b < a.Length; b++)//B is an enumerator. Ussually it is only one letter
    {
        //Defining the node
        TreeNode c = new TreeNode();//c i place for TreeNode
        c.Text = a[b].Substring(0,2);
        c.Tag = a[b];
        ApplyNodes(a[b], ref c);
        if(c != null) tv.Nodes.Add(a)
    }
    this.ResumeLayout(false);
}
private void ApplyNodes(string a, ref TreeNode b)//a=directory, b applied TreeNode …