C＃：使用字节数组通过数据表对象将PictureBox图像保存到SQL Server数据库

Question

I am learning C# including interacting with SQL Server databases. I am stuck however, on adding PictureBox images programmatically to a SQL Server database:

I have created a form with text fields, a picture box, to display/edit/add single records to a database successfully and am successfully using all of the following:

DB Connection = RRConnection

SqlCommand object = playersCommand

SqlDataAdapter object = playersAdapter

dataTable object = playersTable

currencyManager = playerManager

PictureBox1 control = including a button to navigate filesystem and select/load jpeg image into form PictureBox1

Bindings like - txtName.DataBindings.Add("Text", playersTable, "Name") for text fields - I think I need to bind the picturebox1 IMage Byte Array but do not know how to do

When the form closes, the table is loaded into the SQLServer database table tbl_BB into the column named "Image" of type image.

I know I have to convert the image to a byte array to save, but am confused on how to bind the image byte array to the dataTable, allowing it to be uploaded to the database on form close. I've done a lot of googling on it but the solutions do not seem to match the code I am using...

Given the above, can you advise the code necessary for this?

Answer 1

Don't use image it will be removed from MS SQL soon. https://docs.microsoft.com/en-us/sql/t-sql/data-types/ntext-text-and-image-transact-sql

Just use varbinary.

Answer 2

the general way to do it is:

1) SQL Server will have a varbinary(max) column.

2) Take the jpeg and convert it to a byte array

3) add the byte array as a paramter to your sql command object

4) execute nonquery for insertion.

Answer 3

May I suggest you merely save the image on disk directly, and reference the path to the image in the DB instead? Saving images in a db is considered bad practice.