throwing this error
@Gopikrishna_S Plz share the entire expression which you have used. As per the error you are trying to convert with a wrong syntax. You can refer the below doc.
CDate(Datee).ToString(“dd-MMM-yyyy”).ToUpper
output_date1=DateTime.ParseExact(input_date, “dd-MM-yyyy” , System.Globalization.CultureInfo.InvariantCulture).ToString(“dd/MMM/yyyy”)
Try as above
Assign: String was not recognized as a valid DateTime.
input_date is the date which you want to change
output_date1 is the output variable
after conversion just use a message box and check output_date1.Tostring
output_date1=DateTime.ParseExact(input_date, “dd-MM-yyyy” , System.Globalization.CultureInfo.InvariantCulture)
Take of the last part - if you are trying to assign the value to a Date variable.
.ToString(“dd/MMM/yyyy”) - this formats the date to a string using the supplied date format