Question

我有以下从Java转换的C＃代码。在这我得到错误“没有实现inteface成员System.Collections.IComparer.Comparer（object，obkject）”

请帮我解决此错误

internal class CompositeComparator : IComparer
{
    private IComparer major;
    private IComparer minor;
    public CompositeComparator(IComparer major, IComparer minor)
    {
        this.major = major;
        this.minor = minor;
    }
    public virtual int compare(object o1, object o2)
    {
        int result = major.Compare(o1, o2);
        if (result != 0)
        {
            return result;
        }
        else
        {
            return minor.Compare(o1, o2);
        }
    }
}

internal class ComparatorIStep : IComparer
{
    public ComparatorIStep()
    {
    }
    public virtual int compare(object o1, object o2)
    {
        int nReturn = ((LogMessage)o1).IStep - ((LogMessage)o2).IStep;
        return nReturn;
    }
}

internal class ComparatorType : IComparer
{
    public ComparatorType()
    {
    }
    public virtual int compare(object o1, object o2)
    {
        int nReturn = 0;

        LogMessage lm1 = (LogMessage)o1;
        LogMessage lm2 = (LogMessage)o2;
        bool b1 = lm1.isHeading;
        bool b2 = lm2.isHeading;
        if (b1 || !b2)
        {
            nReturn = -1;
        }
        else if (!b1 || b2)
        {
            nReturn = 1;
        }

感谢。

Answer 1

IComparer有一种方法：

int Compare(
   object x,
   object y
);

看起来你需要在“比较”

上大写c

Answer 2

您需要更改行

public virtual int compare(object o1, object o2)

到

public virtual int Compare(object o1, object o2)

C＃区分大小写...

Answer 3

我遇到了几乎相同的问题，但我的解决方案是将public修饰符添加到我创建的方法中：

问题：

public class Ordenacao : IComparer<tab>
{
    int Compare(tab x, tab y)
    {
        tab a = (tab) x;
        tab b = (tab) y;
        return a.ordinal.CompareTo(b.ordinal);
    }
}

解决方案：

public class Ordenacao : IComparer<tab>
{
    public int Compare(tab x, tab y)
    {
        tab a = (tab) x;
        tab b = (tab) y;
        return a.ordinal.CompareTo(b.ordinal);
    }
}

在这两种情况下，我和你的，我想这只是一个关注问题...

不实现接口错误

3 个答案: