Hi all,

I got the error in design window "Object reference not set to an instance of an object."
Instances of this error occurs at two cs files

value = UIHelperConfig.GetSelectedPaymentTypeCode("CreditCard");

public static string GetSelectedPaymentTypeCode(string paymentType)
            return ConfigurationManager.AppSettings.GetValues(paymentType)[0];

How to make my design window viewable??
Any help??

Recommended Answers

All 2 Replies

make sure you have instantiated, assigned all you instances correctly and have all the correct DLL's at the top of your .cs files (example below).

Using UIHelper; 

hope this helps

I have included all using statement at the top of my cs file.
Even other design windows does not cause any problem. Only one design window is not viewable.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, learning, and sharing knowledge.