使用函数返回的多个值中的单个值 VB.net

Question

我有一个函数 returns 在 VB.net 的图片框上绘制的区域的平均 RGB 值。

代码如下：

Function GetAvgRGB(ByVal CrdY As Integer, ByVal CrdX As Integer, ByVal Region As System.Drawing.Rectangle) As Tuple(Of Integer, Integer, Integer)

    Dim totalR As UInteger
    Dim totalG As UInteger
    Dim totalB As UInteger

    For y As Integer = CrdY - (Region.Height / 2) To CrdY + ((Region.Height / 2) - 1)
        For x As Integer = CrdX - (Region.Width / 2) To CrdX + ((Region.Width / 2) - 1)
            totalR += myBitmap.GetPixel(x, y).R
            totalG += myBitmap.GetPixel(x, y).G
            totalB += myBitmap.GetPixel(x, y).B
        Next
    Next

    Dim pixelCount As Integer = Region.Width * Region.Height

    Dim averageR As Integer = CType(totalR \ pixelCount, Integer)
    Dim averageG As Integer = CType(totalG \ pixelCount, Integer)
    Dim averageB As Integer = CType(totalB \ pixelCount, Integer)

    Return Tuple.Create(averageR, averageG, averageB)

End Function

我的问题是如何分离此函数返回的 R、G 和 B 的值..

Answer 1

使用 Item 属性.

Dim myTuple = GetAvgRGB(?,?,?)
Dim r = myTuple.Item1 ' g = .Item2, b = .Item3

使用函数返回的多个值中的单个值 VB.net

Using individual value from multiple values returned by a function VB.net

vb.net

vb.net-2010