2023 年 4 月 – 纪小年

2023/04/01

使用Visual Studio开发WINCC或FTView SE的.Net控件（二）

在上一篇文章末尾后记中记录了RA FTView SE控件事件的响应方法，我在后续制作控件的时候，发现事件参数的传递需要有特定的编写方式，记录一下： VS控件事件事件编写如下：

<DefaultEvent("MenuItemClick")>
Public Class KNavMenu
    Inherits TreeView

    Public Event MenuItemClick As EventHandler

    Private Sub ShowSelectedNode()
        Dim args As New ThresholdReachedEventArgs With {
            .nodeName = SelectedNode.Name,
            .nodePath = SelectedNode.FullPath,
            .nodeIndex = SelectedNode.ToolTipText
        }
        RaiseEvent MenuItemClick(SelectedNode, args)
    End Sub
End Class
Class ThresholdReachedEventArgs
    Inherits EventArgs
    Public Property nodeName As String
    Public Property nodePath As String
    Public Property nodeIndex As Integer
End Class

<DefaultEvent("MenuItemClick")>

Public Class KNavMenu

Inherits TreeView

Public Event MenuItemClick As EventHandler

Private Sub ShowSelectedNode()

Dim args As New ThresholdReachedEventArgs With {

.nodeName = SelectedNode.Name,

.nodePath = SelectedNode.FullPath,

.nodeIndex = SelectedNode.ToolTipText

}

RaiseEvent MenuItemClick(SelectedNode, args)

End Sub

End Class

Class ThresholdReachedEventArgs

Inherits EventArgs

Public Property nodeName As String

Public Property nodePath As String

Public Property nodeIndex As Integer

End Class

SE中配置 ...

按月归档： 4 月 2023

使用Visual Studio开发WINCC或FTView SE的.Net控件（二）

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