Csharp RDLC比例图像对齐

我找到了某种解决方案.它需要知道将影响行的高度的字段的值.You also need a monospaced font.个 基本上，我为图像的填充设置了一个表达式.从那里我调用一个报告函数:

Function GetLineAmount(ByVal str As String, ByVal lineLength As Integer) As Integer
    Dim amount As Integer = 1
    
    If str.Length > lineLength Then
        Dim positionToFind As Integer = lineLength
        
        If str(positionToFind) <> " " Then
            ' Find the last position of a space character
            Do While positionToFind >= 0 AndAlso str(positionToFind) <> " "
                positionToFind -= 1
            Loop
            
            ' Find the last position before that which is not a space (group of spaces)
            Do While positionToFind >= 0 AndAlso str(positionToFind) = " "
                positionToFind -= 1
            Loop
            
            positionToFind += 1
            
        End If
        
        If positionToFind = 0 Then 
            positionToFind = lineLength
        End If
        
        Dim rest As String = str.Substring(positionToFind)

        'PDF somehow "deletes" the first space in a line of text, so 2 space will leave one ... leaving this if to adapt to the pdf.
        If rest.Length > 0 AndAlso rest(0) = " " Then
            rest = rest.Substring(1)
        End If
        
        If rest <> String.Empty Then
            amount += GetLineAmount(rest, lineLength)
        End If
    End If
    
    Return amount
End Function

这将返回一个字段将占用的行数.您必须知道一行需要多少个字符(which is why you need a monospaced font)

然后，从图像填充表达式中，代码将为:

 =  iif(Code.GetLineAmount(Fields!Description.Value,24) = 1
    , "1pt"
    , (4 + (6 * (Code.GetLineAmount(Fields!Description.Value,24) -2) )) & "pt"
    )

所以在该部分中，我发送字段Description，它是在某个时间接受更多行的那个，然后是24，可以适合这些行的字符的数目.

100从我的测试中，以下是对顶部和底部填充的观察:

• 1行需要1磅填充
• 2行需要4磅
• 3及以上为增量为6.