问题
I want to make a bar Chart with Winforms and F#. I have seen many other C# examples making a chart with System.Windows.Forms.DataVisualization.Charting although when i try to open that library then it says then namespace is not defined.
Something as simple as this let chart = new Chart() doesn't work due to the namespace of the library not being defined i take it. Though I have seen people do this in C#. What is the correct way for F#?
Can someone be so kind to show me how to make a chart in F# and point me in the right direction of a bar Chart?
回答1:
You will need to reference the correct assembly then you can open the namespace (equivalent of C# using) like this:
open System.Windows.Forms.DataVisualization.Charting
However, before you go down this route, I would strongly recommend you use FSharp.Charting, which is a wrapper arround DataVisualization.Charting and much easier to work with in F#.
Here is a snippet using DataVisualization.Charting
Here is an example of using F# Charting
来源：https://stackoverflow.com/questions/41795086/f-make-bar-chart-with-winforms-datavisualization