Hello： The student class is not suitable.Then how do i add xValues to the line，when i use age.Add(xValues,yValues), I receive NullRefrenceException. I guess the xValues is must number array, but I need use string data to XValues,like name,subject,category.. var height_data = data.SelectMany(x => x.E...

Hello： I need to show chart with the specificed column. before post the http request, i will appoint the column name，then i will receive the data with the specificed column. eg. request data is ["name","age"], response data is [{name:"Lily",age:10},{name:"Jack",age:11}...] eg. request data is ["subj...

Hello：

The key problem I don't know the structure of the Json file,so i want to use the Dictionary.

Hello：
The problem I faced is the Class is unknown， so I want to use the class with Dictionary , but it does't work.

Hello： I want to show the multiple line with user select different property. Now I has the data like Snipaste_2023-02-09_18-26-47.png I can't define the data Model with Class, because the property is dynamic. How do i need to use the class, to show chart with multiple Line. the code is which i want ...

Hello, I've got a question, That's how to realization the Million-level line chat drawing, capable of rendering points as specified marks, such as dots, small squares, etc I'm afraid I don't understand your requirement here—could you please be more specific? Please be aware that we have a large, si...

hello:
I got a question, That's how to realize custome line ?
Just like the color line in demo, but i need to add the custome label above the end of the line and make the solid line to be dotted line

Hello:
I've got a question, That's how to realization the Million-level line chat drawing, capable of rendering points as specified marks, such as dots, small squares, etc

Think you.
But i hope the Mark can custom.
e.g. set the format is so the chart show like :
And I hope the mouse hover the Specified bar ，then the Mark will show like above.When the mouse leave the Specified bar ,the Mark will hide.

hello: i can see these code in InitializeComponent function which is generate automaticlly. this.bar1.XValues.DataMember = "X"; this.bar1.YValues.DataMember = "Bar"; i want to use code : Add(new {X=1,Bar=10.22}); Add(new {X=2,Bar=15.65}); to show chart .but it's nothing. class Student { string name;...

hello： I can't find the differences in NET6 and NET framework . when i run the NET 6 Demo，I can find most example which can‘t find in NET framework Demo. Is those can't reach in Net framework？ So i can't know how I need create the winform project with NET 6 or NET framework.I want to know what is th...