图片框只显示一次

Question

我将图片框创建为一个对象，一个容器保存所有对象。因此，如果需要，我调用使用 generateIcon 的 returnIcon 方法。我在容器中有一个方法来搜索正确的对象，然后返回该对象的图标。表单创建容器。我在那里调用图标，然后将它们发送到要显示它的用户控件。我的问题是图片框只显示最后一次调用。我知道每个对象都被正确找到。在用户控件中，我使用了picturebox.name，每一个都是正确的。正在发送值，但未显示图像。为什么只有最后一个图片框调用显示？

基础对象是基本的 LeagueObject，其中包含在需要时创建的图片框（取决于布尔 iamset）。

容器基本上只是一个 LeagueObjects 的列表（它是为 JSON 反序列化而设置的）。

图片框旅行： 联盟（基础）对象>>容器>>表单>>加载到表单中的用户控件（有十个用户控件添加到表单中）唯一显示的图片框是最后需要图片框的用户控件。

- base object

        Protected Sub generateIcon()
            If Not iamset Then
                img.Width = 45
                img.Height = 45
                img.SizeMode = PictureBoxSizeMode.Zoom
                img.BorderStyle = BorderStyle.None
                Try
                    img.Image = System.Drawing.Image.FromFile(Path.Combine(Path.GetTempPath(), "lolIcons", type, image.full))
                Catch ex As Exception
                End Try
                img.BackColor = Color.White
                setIcon()
                AddHandler img.Click, AddressOf onIconClick
                iamset = True
            End If
        End Sub
            Public Function returnIcon() As PictureBox
                generateIcon()
                Return img
            End Function

    - base object collection    


      Public Function returnImageById(ByVal strID As String) As PictureBox
                For Each champ In league_container.data
                    If champ.Value.id.ToString = strID Then
                        Console.WriteLine("found " + champ.Value.name)
                        Return champ.Value.returnIcon()
                    End If
                Next
                Console.WriteLine("Failed to find " + strID)
                Return New PictureBox
            End Function

- form

    Public Sub loadUC(ByVal player As LeagueCurrentGameParticipant, ByVal kills As Double, ByVal deaths As Double, ByVal assists As Double, ByVal largestKillingSpree As Double, ByVal largestMultiKill As Double, ByVal killingSprees As Double, ByVal doubleKills As Double, ByVal tripleKills As Double, ByVal quadraKills As Double, ByVal pentaKills As Double, ByVal unRealKills As Double)
            Dim uc As New ucMatchSummoner
            uc.loadUC(player, rgocm.returnImageById(player.championId.ToString), rgossm.returnImageById(player.spell1Id.ToString()), rgossm.returnImageById(player.spell2Id.ToString()), kills, deaths, assists, largestKillingSpree, largestMultiKill, killingSprees, doubleKills, tripleKills, quadraKills, pentaKills, unRealKills)
            tblpMain.Controls.Add(uc)
        End Sub

- user control (This one is actually longer but I truncated it since it served no purpose. I was sending it ByVal but attempted ByRef in case anything changed, which it did not.

      Public Sub loadUC(ByRef lcgp As LeagueCurrentGameParticipant, ByVal champImage As PictureBox, ByRef spell1 As PictureBox, ByRef spell2 As PictureBox, ByVal kills As Double, ByVal deaths As Double, ByVal assists As Double, ByVal largestKillingSpree As Double, ByVal largestMultiKill As Double, ByVal killingSprees As Double, ByVal doubleKills As Double, ByVal tripleKills As Double, ByVal quadraKills As Double, ByVal pentaKills As Double, ByVal unRealKills As Double)
            lp = lcgp
            loadPlayerCurrentGameInformation()
            pnlChampIcon.Controls.Add(champImage)
            flpSpells.Controls.Add(spell1)
            flpSpells.Controls.Add(spell2)
    End class

Answer 1

显然，图片框不能像字符串一样反复返回。因此，我可以多次快速创建图像。该标志的主要原因是因为我每次都在下载图像，现在我只是将一组图像保存在一个临时文件夹中并访问那里的图像，这很有效。标志 iAmSet 会阻止图片框被多次创建，所以我删除了标志，一切都按预期工作。