asp.net – 返回异常值

发布时间：2020-12-16 07:33:35 所属栏目：asp.Net 来源：网络整理

导读：为什么这段代码不能编译？它给了我错误： not all code paths return a value 码： public bool isUserProfileHashed(string username){ bool isHashed = false; MembershipUser u = null; u = Membership.GetUser(username); if (u != null) { try { u.Get

为什么这段代码不能编译？
它给了我错误：

not all code paths return a value

码：

public bool isUserProfileHashed(string username)
{
    bool isHashed = false;
    MembershipUser u = null;
    u = Membership.GetUser(username);
    if (u != null)
    {
        try
        {
            u.GetPassword();                   
        }
        catch (Exception exception)
        {
            // An exception is thrown when the GetPassword method is called for a user with a hashed password
            isHashed = true;
            return isHashed;
        }
        return isHashed;
    }

解决方法

你忘了在if之外放一个返回,把它放在if结束的括号之后

public bool isUserProfileHashed(string username)
{
    bool isHashed = false;
    MembershipUser u = null;
    u = Membership.GetUser(username);
    if (u != null)
    {
        try
        {
            u.GetPassword();                   
        }
        catch
        {
            // An exception is thrown when the GetPassword method is called for a user with a hashed password
            isHashed = true;
        }
    }
    return isHashed;
}

[编辑]删除不必要的回报(@FredrikM?rk)未使用的捕获异常因此也将其删除.

（编辑：李大同）

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