please check the format

Code:

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if (!(GetField(header, fields, "Declared Value for Carriage").Equals("") || GetField(header, fields, "Declared Value for Carriage").Equals(null)) && !(GetField(header, fields, "Number of Packages").Equals("") || GetField(header, fields, "Number of Packages").Equals(null)))
                        {
                            writer.WriteElementString("InsuranceAmount", (int.Parse(GetField(header, fields, "Declared Value for Carriage")) / int.Parse(GetField(header, fields, "Number of Packages"))).ToString());
                            //writer.WriteElementString("InsuranceAmount", "");
                        }
                        else
                        {
                            writer.WriteElementString("InsuranceAmount", "");
                            //writer.WriteElementString("InsuranceAmount", (Convert.ToInt16(GetField(header, fields, "Declared Value for Carriage")) / Convert.ToInt16(GetField(header, fields, "Number of Packages"))).ToString());
                        }

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i m getting error in the third line .the error states that the input string format is not correct.please help me............

I cannot follow your code. What about reorganizing a little it. Introducing some variables to simplify it?

Code:

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int declaredValue = int.Parse(GetField(header, fields, "Declared Value for Carriage"));
int packageNumber = int.Parse(GetField(header, fields, "Number of Packages"));
writer.WriteElementString("InsuranceAmount", Convert.ToString(declaredValue / packageNumber));

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Make it cleaner... :sick: