Quick Start: Removing a digital signature using the web service API

The following C# code example removes a digital signature from a signature field named SignatureField1.

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.IO ; 

namespace ClearSignatureField

{

	class Class1

	{

		[STAThread]

		static void Main(string[] args)

		{

		try

			{

			//Create a SignatureServiceService client object

			SignatureServiceService  signClient = new SignatureServiceService(); 

			signClient.Credentials = new System.Net.NetworkCredential("administrator", "password");

			//Create a BLOB object

			BLOB inDoc = new BLOB();

			//Specify a PDF document that contains a digital signature

			string path = "C:\\Adobe\\Loan.pdf";

			FileStream fs = new FileStream(path, FileMode.Open);

			//Get the length of the file stream 

			int len = (int)fs.Length; 

			byte[] ByteArray=new byte[len];

			//Populate the byte array with the contents of the FileStream object

			fs.Read(ByteArray, 0, len);

			inDoc.binaryData = ByteArray; 

			//Specify the name of the signature field

			string fieldName = "SignatureField1[0]";

			//Clear the signature field

			BLOB signedDoc = signClient.clearSignatureField(inDoc,fieldName);

			//Populate a byte array with a BLOB data

			byte[] outByteArray=signedDoc.binaryData; 

			//Create a new file instance

			string fileName ="C:\\Adobe\\Loan.pdf" ; 

			FileStream fs2 = new FileStream(fileName, FileMode.OpenOrCreate);

			//Create a BinaryWriter object

			BinaryWriter w = new BinaryWriter(fs2);

			w.Write(outByteArray);

			w.Close();

			fs2.Close();

			}

		catch (Exception ee)

			{

			Console.WriteLine(ee.Message);  

			}

		}

	}

}

 

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