public readonly属性计数为整数'没有参数，并且无法索引其返回类型 [英] public readonly property count as integer' has no parameters and its return type cannot be indexed

问题描述

大家好！我有下面的代码，我得到错误：public readonly属性计数为整数'没有参数，其返回类型无法索引。不知道伯爵有什么问题。任何帮助都将非常感谢，谢谢。

Hi all out there! I have this code below and I get the error: public readonly property count as integer' has no parameters and its return type cannot be indexed. Don't know what's wrong with the Count. Any help will be much appreciate, thanks.

Public Sub Connect(userName As String)
            Dim id = Context.ConnectionId


            If ConnectedUsers.Count(Function(x) x.ConnectionId = id) = 0 Then
                ConnectedUsers.Add(New UserDetail() With { _
                    .ConnectionId = id, _
                    .UserName = userName _
                })

                ' send to caller
                Clients.Caller.onConnected(id, userName, ConnectedUsers, CurrentMessage)

                ' send to all except caller client

                Clients.AllExcept(id).onNewUserConnected(id, userName)
            End If

        End Sub

推荐答案

你想说的可能是：

Probably, what you want to say is:

If ConnectedUsers.Where(Function(x) x.ConnectionId = id).Count = 0 Then

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