How to insert byte array data with Linq?

Question

I already create a table contain blob field and transfer the file into byte array.

But it will get error when execute the code blow to insert data into the table.

Table table = new Table();
table.FileName = FileName;
table.Content = Convert.FromBase64String(input_file);
db.Table.Add(table);
db.SaveChanges();

The error message is "ora-01460 unimplemented or unreasonable conversion requested".

I tried to insert the same data by oracle executeNonQuery instead Linq and it would work.

But I wonder why it will get error when using Linq.

Here is the Table class content:

public class Table 
{
    public string FileName { get; set; }
    public byte[] Content { get; set; }
}

Here are the assembly I using:

Microsoft.EntityFrameworkCore 3.1.6

Oracle.EntityFrameworkCore v3.19.0-beta2

Oracle.ManagedDataAccess.Core v2.19.80

Table DDL:

CREATE TABLE "TABLE" 
(    
 "FILENAME" VARCHAR2(100 BYTE), 
 "FILECONTENT" BLOB
)

Answer 1

It would work after I add Column Type and MaxLength as below:

public class Table 
{
  public string FileName { get; set; }

  [Column("Content", TypeName = "BLOB")]
  [MaxLength(2147483647)]
  public byte[] Content { get; set; }
}