How to convert base64 value from a database to a stream with C#

How to convert base64 value from a database to a stream with C#

To convert a base64-encoded string from a database to a Stream object in C#, you can use the System.Convert class and the System.IO.MemoryStream class. Here's an example:

// Retrieve the base64-encoded value from the database string base64Value = "VGVzdCBzdHJpbmc="; // Convert the base64-encoded value to a byte array byte[] bytes = Convert.FromBase64String(base64Value); // Create a memory stream from the byte array using (Stream stream = new MemoryStream(bytes)) { // Use the stream as needed // For example, you could read the contents of the stream using a StreamReader: using (StreamReader reader = new StreamReader(stream)) { string contents = reader.ReadToEnd(); Console.WriteLine(contents); // Outputs "Test string" } }

In the example above, the base64-encoded value is retrieved from the database as a string. The Convert.FromBase64String method is used to convert the string to a byte array. A MemoryStream object is created from the byte array, which can be used as a Stream object. The StreamReader class is used to read the contents of the stream as a string. The contents of the stream are output to the console.

Examples

1. "C# convert base64 to stream"

Code Implementation:

string base64String = "yourBase64String"; // Replace with your base64 string byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

2. "Read base64 from database and convert to stream in C#"

Code Implementation:

// Assuming 'reader' is your database reader string base64String = reader["yourColumnName"].ToString(); // Replace with your column name byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

3. "C# base64 to stream conversion example"

Code Implementation:

string base64String = "yourBase64String"; // Replace with your base64 string byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

4. "Convert base64 data from database to stream in C#"

Code Implementation:

// Assuming 'reader' is your database reader string base64String = reader["yourColumnName"].ToString(); // Replace with your column name byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

5. "C# base64 to MemoryStream conversion"

Code Implementation:

string base64String = "yourBase64String"; // Replace with your base64 string byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

6. "Read base64 encoded data from database and convert to stream in C#"

Code Implementation:

// Assuming 'reader' is your database reader string base64String = reader["yourColumnName"].ToString(); // Replace with your column name byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

7. "C# convert base64 string to MemoryStream"

Code Implementation:

string base64String = "yourBase64String"; // Replace with your base64 string byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

8. "Database base64 to stream conversion in C#"

Code Implementation:

// Assuming 'reader' is your database reader string base64String = reader["yourColumnName"].ToString(); // Replace with your column name byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

9. "C# read base64 from database and convert to stream"

Code Implementation:

// Assuming 'reader' is your database reader string base64String = reader["yourColumnName"].ToString(); // Replace with your column name byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

10. "Convert base64 data to stream in C# with database"

Code Implementation:

// Assuming 'reader' is your database reader string base64String = reader["yourColumnName"].ToString(); // Replace with your column name byte[] byteArray = Convert.FromBase64String(base64String); MemoryStream stream = new MemoryStream(byteArray);

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