How to solv this error

Question

4.00/5 (1 vote)

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Hi,

I am trying to pass a argument into a method of another class from the current class
So, I am using constructor for doing it
In the below code I am creating new instance of constructor class and then trying to pass string into the method

C#

class GatewayMsgIDs : Form
    {

      public List<GatewayMessageDetails> ResponseTimeofMsgs( string NumofBuses)
        {
         //mycode
         }
     }

C#

class GatewayResponseTime
    {
 private void GenerateExcelSheets(Excel.Worksheet xlWorkSheet, string sheetname, string noofBuses)
        {
 GWMsgDetails = SCANLA.GatewayMsgIDs.ResponseTimeofMsgs(noofBuses);
        }
    }

I am getting error like below

An object reference is required for the non-static field, method, or property

Thanks
John

Posted 14-Feb-14 1:50am

Member 10408451

Updated 14-Feb-14 3:10am

v5

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Comments

ZurdoDev 14-Feb-14 8:06am

You have to call new on whatever it is complaining about.

Bala Selvanayagam 14-Feb-14 8:22am

where do you instantiate SCANLA

You may have to post your code showing both classes and the way you are calling. Without this we would not be able to figure out

Member 10408451 14-Feb-14 9:11am

Hi,
I updated my question with my code
please check it
If not possible to say with that, I will try to post my whole code

1 solution

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OriginalGriff · Accepted Answer · 2014-02-14T02:14:00

We can't tell, exactly - because we don't have access to your running code.
You do - so use the debugger. Put a breakpoint on the the line:

C#

GWMsgDetails = SCANLA.GatewayMsgIDs.ResponseTimeofMsgs(numofBusesandColor.numofbuses);

and run your program.
When it hits the breakpoint, use the debugger to look at each part in sequence, starting from the left:

SCANLA
SCANLA.GatewayMsgIDs

Onle of them will be null, or will return null. Then all you have to do is look through your code and find out why.

We can't: we don't have access to your HDD!