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軟件：MS Visual Studio Shell 2013SSRS 2013熱圖
我目前正在爲我嘗試發佈的SSRS報告製作矩陣熱圖。
我試圖應用背景的文本框按行和列分組。它有一個計數功能來確定該單元格的值。我使用
報告準則是：
public const ColorScaleRed = "#FF0000"
public const ColorScalePink= "#ff6666"
public function ColorScaleWPR(value, minValue, maxValue) as string
ColorScaleWPR = ColorScale3(value, _
minValue, "White", _
ColorScalePink, _
maxValue, ColorScaleRed)
end function
public function ColorScale3(value as object, minValue as object, minColor as string, midColor as string, maxValue as object, maxColor as string) as string
' Use average of minValue and maxValue as midValue
dim midValue as object
if IsNumeric(minValue) and IsNumeric(maxValue) then
midValue = (CDbl(minValue) + CDbl(maxValue))/2
end if
ColorScale3 = ColorScale3(value, _
minValue, minColor, _
midValue, midColor, _
maxValue, maxColor)
end function
public function ColorScale3(value as object, minValue as object, minColor as string, midValue as object, midColor as string, maxValue as object, maxColor as string) as string
if IsNumeric(value) and IsNumeric(midValue) and CDbl(value) < CDbl(midValue) then
ColorScale3 = ColorScale(value, minValue, minColor, midValue, midColor)
else
ColorScale3 = ColorScale(value, midValue, midColor, maxValue, maxColor)
end if
end function
public function ColorScale(value as object, minValue as object, minColor as string, maxValue as object, maxColor as string, optional errorColor as string = "Transparent") as string
ColorScale = errorColor
if not IsNumeric(value) or not IsNumeric(minValue) or not IsNumeric(maxValue) then
exit function
end if
' Do all calculations using doubles (can't mix doubles and decimals)
value = CDbl(value)
minValue = CDbl(minValue)
maxValue = CDbl(maxValue)
if minValue >= maxValue then
exit function
end if
if value <= minValue then
ColorScale = minColor
exit function
end if
if value >= maxValue then
ColorScale = maxColor
exit function
end if
dim scaleValue, r, g, b as double
dim minRGB, minR, minG, minB as integer
dim maxRGB, maxR, maxG, maxB as integer
scaleValue = (value - minValue)/(maxValue - minValue)
minRGB = GetRGB(minColor)
minR = minRGB/2^16
minG = (minRGB mod 2^16)/2^8
minB = minRGB mod 2^8
maxRGB = GetRGB(maxColor)
maxR = maxRGB/2^16
maxG = (maxRGB mod 2^16)/2^8
maxB = maxRGB mod 2^8
r = minR + ((maxR - minR) * scaleValue)
g = minG + ((maxG - minG) * scaleValue)
b = minB + ((maxB - minB) * scaleValue)
ColorScale = string.Format("#{0:X2}{1:X2}{2:X2}", _
CInt(Math.Floor(r)), _
CInt(Math.Floor(g)), _
CInt(Math.Floor(b)))
end function
private function GetRGB(colorStr as string) as integer
GetRGB = 0
if colorStr.StartsWith("#") then
GetRGB = Int32.Parse(colorStr.Substring(1), System.Globalization.NumberStyles.AllowHexSpecifier)
exit function
end if
dim c as System.Drawing.Color
c = System.Drawing.Color.FromName(colorStr)
GetRGB = (c.R * 2^16) + (c.G * 2^8) + c.B
end function
我的問題是，當我設置的背景表達。
我能夠得到熱圖使用下面的表達式正確顯示：
=Code.ColorScaleWPR(Count(Fields!Candidate_ID.Value),0,10)
不過，我不希望使用靜態值的最小值和最大值。我希望它們是動態的，因爲根據所選參數的不同，最小值和最大值可能差別很大。
所以我用下面的代碼
=Code.ColorScaleWPR(Count(Fields!Candidate_ID.Value), Min(Fields!Candidate_ID.Value,"DataSet1"), Max(Fields!Candidate_ID.Value,"DataSet1"))
當我運行它呈現全白的報告，並沒有調節的被應用於細胞。
任何建議，使其動態將是很棒的。 謝謝！