Cannot access a non-static member of outer type

S J

Using wrapper class concept need to draw multiple rectangles by using x,y,w,h entering textbox values in c# windows application.

i tried but showing error

Cannot access a non-static member of outer type 'WindowsFormsApplication3.Form1' via nested type

4 Replies

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Mageshwaran R5y ago
Hi SJ,
Please refer this link,It may help you,
https://stackoverflow.com/questions/16320935/cannot-access-a-non-static-member-of-outer-type-via-nested-type#:~:text=4%20Answers&text=The%20problem%20is%20that%20nested,outer%20class%20are%20not%20inherited.&text=you%20need%20to%20instantiate%20an,is%20not%20a%20static%20method.
+1
S J5y ago
in seprate class how to call paint events like draw ractangle, graphics methods
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Rajanikant Hawaldar5y ago
Agree with @Sachin, you can also mark method as static to come out of this error.
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Sachin Singh5y ago
the variable or method which you are trying to access is outside the class where you are trying to access it
create an object of the class and then access the method/property you won't get any error.

wrapper class means wrapping two class onto one so that by create the object of wrapper class we could access the members of both the class.
class Wrapper //Wrapper Class
{
    class InnerClass //Inner Class
    {
        public Int32 ProcessData(int Val)
        {
            return Val + 1;
        }
    }
    public Int32 CallRapper()
    {
        Wrapper.InnerClass wpr = new Wrapper.InnerClass(); // Internally call to Wrapper class.
        return wpr.ProcessData(100);
    }
}
class Program
{
    static void Main(string[] args)
    {
        Wrapper w = new Wrapper();
        Console.WriteLine("Data Process by inner class and show by Wrapper Class:-" + w.CallRapper());
        Console.ReadLine();
    }
}
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