System.InvalidCastException: Conversion from string "" to type 'Integer' is not valid. ---> System.FormatException: Input string was not in a correct format.
at Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat)
at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value)
--- End of inner exception stack trace ---
at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value)
at WebApplication1.common.isStaff(String strUserID) in C:\Users\engte\Dropbox\Visual Studio 2019\Toypanic\WebApplication1\Models\common.vb:line 880
at WebApplication1.FeedbackTestimonialDetails.initAdminControl() in C:\Users\engte\Dropbox\Visual Studio 2019\Toypanic\WebApplication1\TestimonialDetails.aspx.vb:line 244
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