How to decode a string of text from a Base64 to a byte array, and the get the string property of this byte array without data corruption in C#

How to decode a string of text from a Base64 to a byte array, and the get the string property of this byte array without data corruption in C#

To decode a Base64 string to a byte array and convert it back to a string without data corruption in C#, you can use the Convert.FromBase64String method and specify the appropriate character encoding. Here's an example:

using System; using System.Text; class Program { static void Main() { string base64String = "SGVsbG8gV29ybGQ="; // Example Base64 string // Decode the Base64 string to a byte array byte[] byteArray = Convert.FromBase64String(base64String); // Convert the byte array back to a string using the appropriate encoding string decodedString = Encoding.UTF8.GetString(byteArray); Console.WriteLine(decodedString); } }

In the example above, the Convert.FromBase64String method is used to decode the Base64 string into a byte array. Then, the Encoding.UTF8.GetString method is used to convert the byte array back to a string, assuming the original string was encoded using UTF-8.

Make sure to use the correct character encoding when converting the byte array back to a string. If the original string was encoded using a different character encoding, such as ASCII or Unicode, you should specify that encoding instead.

By following these steps, you can safely decode a Base64 string to a byte array and convert it back to a string without data corruption in C#.

Examples

  1. "C# Base64 decode to byte array and convert to string"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; byte[] bytes = Convert.FromBase64String(base64EncodedString); string decodedString = Encoding.UTF8.GetString(bytes);

    Description: Decodes a base64-encoded string to a byte array and then converts it to a string using UTF-8 encoding.

  2. "C# Base64 decode to byte array with URL-safe encoding"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; base64EncodedString = base64EncodedString.Replace('-', '+').Replace('_', '/'); byte[] bytes = Convert.FromBase64String(base64EncodedString); string decodedString = Encoding.UTF8.GetString(bytes);

    Description: Adjusts the base64-encoded string for URL-safe encoding before decoding and converting it to a string.

  3. "C# Base64 decode with error handling"

    string base64EncodedString = "InvalidBase64String"; try { byte[] bytes = Convert.FromBase64String(base64EncodedString); string decodedString = Encoding.UTF8.GetString(bytes); } catch (FormatException ex) { Console.WriteLine($"Error decoding: {ex.Message}"); }

    Description: Adds exception handling to deal with an invalid base64-encoded string.

  4. "C# Base64 decode and handle non-UTF8 encoding"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; byte[] bytes = Convert.FromBase64String(base64EncodedString); try { string decodedString = Encoding.UTF8.GetString(bytes); } catch (DecoderFallbackException) { Console.WriteLine("Unable to decode using UTF-8 encoding."); }

    Description: Handles the case where decoding might fail due to an incompatible encoding.

  5. "C# Base64 decode and preserve original byte array"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; byte[] originalBytes = Convert.FromBase64String(base64EncodedString); byte[] clonedBytes = (byte[])originalBytes.Clone(); string decodedString = Encoding.UTF8.GetString(clonedBytes);

    Description: Preserves the original byte array before decoding, ensuring the byte array remains unchanged.

  6. "C# Base64 decode with a custom decoding function"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; string decodedString = DecodeBase64Custom(base64EncodedString); static string DecodeBase64Custom(string base64EncodedString) { byte[] bytes = Convert.FromBase64String(base64EncodedString); // Custom decoding logic if needed return Encoding.UTF8.GetString(bytes); }

    Description: Utilizes a custom decoding function for additional processing.

  7. "C# Base64 decode and display decoded content"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; byte[] bytes = Convert.FromBase64String(base64EncodedString); string decodedString = Encoding.UTF8.GetString(bytes); Console.WriteLine($"Decoded String: {decodedString}");

    Description: Decodes a base64-encoded string and displays the decoded content in the console.

  8. "C# Base64 decode with specified encoding"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; byte[] bytes = Convert.FromBase64String(base64EncodedString); string decodedString = Encoding.ASCII.GetString(bytes);

    Description: Decodes a base64-encoded string with a specified encoding (ASCII in this example).

  9. "C# Base64 decode with UTF-8 and no BOM"

    string base64EncodedString = "SGVsbG8gd29ybGQ="; byte[] bytes = Convert.FromBase64String(base64EncodedString); string decodedString = new UTF8Encoding(false).GetString(bytes);

    Description: Decodes a base64-encoded string with UTF-8 encoding and without a Byte Order Mark (BOM).

More Tags

bitbucket-api logcat google-sheets-export-url export-to-excel capacitor managed-bean user-experience dispose forms-authentication material-table

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