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How to use IronSecureDoc from C# in .NET

Chaknith Bin

Updated:June 22, 2025

Your Gateway to Enhanced Document Security

IronSoftware.SecureDoc.Client is a robust client-side library designed to interact seamlessly with the IronSecureDoc API, a comprehensive document security solution hosted in a Docker container.

This client library facilitates easy integration into your existing .NET applications, enabling you to leverage the powerful features of IronSecureDoc, including PDF encryption, redaction, and digital signing, all through simple REST API calls.

With IronSoftware.SecureDoc.Client, developers can ensure the security and integrity of documents within their applications, maintaining all operations on-site for enhanced data protection. Whether you need to redact sensitive information, certify documents with digital signatures, or enforce document encryption, IronSoftware.SecureDoc.Client provides the necessary tools to accomplish these tasks efficiently and securely.

Features

Key Features:

• Easy integration with IronSecureDoc's REST API.
• Support for document encryption, redaction, and digital signing.
• Facilitates secure document processing within self-hosted environments.
• Enhances data protection by keeping document security operations on-site.
• Compatible with .NET applications, offering a straightforward approach to secure document management.

Installation

Let's start with installing the NuGet package from the package manager:

Option 1: Download from NuGet

The NuGet package is listed here on the official NuGet website: https://www.nuget.org/packages/IronSoftware.SecureDoc.Client

Option 2: PM Install Command

Install-Package IronSoftware.SecureDoc.Client

Code Example

using IronSecureDoc;
using System.IO;
using System.Threading.Tasks;

// Example illustrating how to use the IronSecureDocClient
class SecureDocExample
{
    static async Task Main(string[] args)
    {
        // Replace with your IRONSECUREDOC URL
        var client = new IronSecureDocClient("http://localhost:5185");

        // Replace with your PDF or CERT paths
        string PDF_PATH = "path/to/your.pdf";
        string CERT_PATH = "path/to/your.p12";

        // Attempt to connect to the IronSecureDoc API
        if (await client.TryConnectAsync())
        {
            // Redact Text
            File.WriteAllBytes(
                "redact_text_example.pdf",
                await client.RedactTextAsync(PDF_PATH, new[] { "Dummy" })
            );

            // Redact Region
            File.WriteAllBytes(
                "redact_region_example.pdf",
                await client.RedactRegionAsync(PDF_PATH, 50, 50, 200, 100)
            );

            // Certify
            File.WriteAllBytes(
                "certify_example.pdf",
                await client.CertifyAsync(PDF_PATH, CERT_PATH, "123456", CertifyPermissions.FormFillingAllowed)
            );

            // Encrypt
            File.WriteAllBytes(
                "encrypt_example.pdf",
                await client.EncryptAsync(PDF_PATH, "iron")
            );
        }
    }
}

using IronSecureDoc;
using System.IO;
using System.Threading.Tasks;

// Example illustrating how to use the IronSecureDocClient
class SecureDocExample
{
    static async Task Main(string[] args)
    {
        // Replace with your IRONSECUREDOC URL
        var client = new IronSecureDocClient("http://localhost:5185");

        // Replace with your PDF or CERT paths
        string PDF_PATH = "path/to/your.pdf";
        string CERT_PATH = "path/to/your.p12";

        // Attempt to connect to the IronSecureDoc API
        if (await client.TryConnectAsync())
        {
            // Redact Text
            File.WriteAllBytes(
                "redact_text_example.pdf",
                await client.RedactTextAsync(PDF_PATH, new[] { "Dummy" })
            );

            // Redact Region
            File.WriteAllBytes(
                "redact_region_example.pdf",
                await client.RedactRegionAsync(PDF_PATH, 50, 50, 200, 100)
            );

            // Certify
            File.WriteAllBytes(
                "certify_example.pdf",
                await client.CertifyAsync(PDF_PATH, CERT_PATH, "123456", CertifyPermissions.FormFillingAllowed)
            );

            // Encrypt
            File.WriteAllBytes(
                "encrypt_example.pdf",
                await client.EncryptAsync(PDF_PATH, "iron")
            );
        }
    }
}

Imports IronSecureDoc
Imports System.IO
Imports System.Threading.Tasks

' Example illustrating how to use the IronSecureDocClient
Friend Class SecureDocExample
	Shared Async Function Main(ByVal args() As String) As Task
		' Replace with your IRONSECUREDOC URL
		Dim client = New IronSecureDocClient("http://localhost:5185")

		' Replace with your PDF or CERT paths
		Dim PDF_PATH As String = "path/to/your.pdf"
		Dim CERT_PATH As String = "path/to/your.p12"

		' Attempt to connect to the IronSecureDoc API
		If Await client.TryConnectAsync() Then
			' Redact Text
			File.WriteAllBytes("redact_text_example.pdf", Await client.RedactTextAsync(PDF_PATH, { "Dummy" }))

			' Redact Region
			File.WriteAllBytes("redact_region_example.pdf", Await client.RedactRegionAsync(PDF_PATH, 50, 50, 200, 100))

			' Certify
			File.WriteAllBytes("certify_example.pdf", Await client.CertifyAsync(PDF_PATH, CERT_PATH, "123456", CertifyPermissions.FormFillingAllowed))

			' Encrypt
			File.WriteAllBytes("encrypt_example.pdf", Await client.EncryptAsync(PDF_PATH, "iron"))
		End If
	End Function
End Class

Explanation

• IronSecureDocClient Initialization: Initialize the IronSecureDocClient with the URL to your IRONSECUREDOC server.
• Connecting: Use TryConnectAsync() to verify the connection to the server.
• Redact Text: Define sensitive words/phrases to redact using RedactTextAsync.
• Redact Region: Redact specific regions by specifying coordinates with RedactRegionAsync.
• Certify: Add a digital certification with CertifyAsync. Provide path to the certification file and a password.
• Encrypt: Secure the document by encrypting it using EncryptAsync.

Support

For support please contact us: support@ironsoftware.com

Chaknith Bin

  Chat with engineering team now

Software Engineer

Chaknith works on IronXL and IronBarcode. He has deep expertise in C# and .NET, helping improve the software and support customers. His insights from user interactions contribute to better products, documentation, and overall experience.

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