SpreadsheetLight c#

Question

spreadsheetLight是否具有在中从右向左方向中创建excel工作表的功能.也就是说，A 列应该出现在excel工作表的右侧。

Answer 1

SpreadSheetLight确实持久化了RightToLeft属性，如果您打开一个现有的工作簿，并将RightToLeft属性设置为True，您可以修改现有的工作簿和保存或保存，结果也将被设置为RightToLeft。

困难在于复杂的事情似乎很简单，因为它存在于Excel中的单个复选框中，属性被设置在每个工作表视图中，尽管对于这个值大多数被忽略。因为SpreadSheetLight确实坚持了这一点，这意味着它确实读取并保存回来，这样您就可以实际更改它；但是，它没有公开，所以您需要使用反射。

下面是一个快速而肮脏的示例，说明如何在VB.net中为工作簿/SLDocument全局读取和修改它，应该非常容易转换为C#

Imports System.Reflection
Imports System.Runtime.CompilerServices
Imports SpreadsheetLight

Public Module SlDocumentExtender
    <Extension>
    Public Sub SetRightToLeft(ByVal slDoc As SLDocument, ByVal rightToLeft As Boolean)
        Dim sheetViews = GetSheetViews(slDoc.GetSlws)
        If Not sheetViews.Any AndAlso rightToLeft Then 'Don't bother creating a default SheetView if false since it's the default
            slDoc.FreezePanes(1, 0)
            slDoc.UnfreezePanes()
            sheetViews = GetSheetViews(slDoc.GetSlws)
        End If
        sheetViews.ForEach(Sub(sv) SetRightToLeftSheetView(sv, rightToLeft))
    End Sub

    <Extension>
    Public Function GetRightToLeft(ByVal slDoc As SLDocument) As Boolean
        Dim sheetViews = GetSheetViews(slDoc.GetSlws)
        Return sheetViews.Any(Function(sv) GetRightToLeftSheetView(sv)) 'Empty collection will return false which is the default so we're good
    End Function

    <Extension>
    Public Function GetSlws(ByVal slDoc As SLDocument) As Object 'SLWorksheet
        Return slDoc.GetType.GetField("slws", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(slDoc)
    End Function

    Private Sub SetRightToLeftSheetView(ByVal sheetView As Object, ByVal rightToLeft As Boolean)
        GetRequiredType(sheetView, "SpreadsheetLight.SLSheetView").GetProperty("RightToLeft", BindingFlags.Instance Or BindingFlags.NonPublic).SetValue(sheetView, rightToLeft)
    End Sub

    Private Function GetRightToLeftSheetView(ByVal sheetView As Object) As Boolean
        Return GetRequiredType(sheetView, "SpreadsheetLight.SLSheetView").GetProperty("RightToLeft", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(sheetView)
    End Function

    Private Function GetSheetViews(ByVal slws As Object) As List(Of Object) 'List<SLSheetView>
        Return DirectCast(GetRequiredType(slws, "SpreadsheetLight.SLWorksheet").GetProperty("SheetViews", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(slws), IList).OfType(Of Object).ToList()
    End Function

    Private Function GetRequiredType(ByVal obj As Object, ByVal requiredType_FullName As String) As Type
        Dim type = obj.GetType
        If Not type.FullName.Equals(requiredType_FullName) Then
            Throw New NotSupportedException(String.Format("Type ""{0}"" is not supported, this method only handles only type ""{1}"".", type.FullName, requiredType_FullName))
        End If
        Return type
    End Function
End Module

Answer 2

我已经对此进行了深入检查，并了解到SpreadsheetLight目前不支持从右到左的工作表布局。