vendredi 21 août 2015

How i can save an Image in Sqlite database as blob?

This is the code I use to save a picture as base64String TEXT in my database.cs .

public void CreateDatabase(string sqldb_name)
        {
            try
            {
                sqldb_message = "";
                string sqldb_location = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
                string sqldb_path = Path.Combine(sqldb_location, sqldb_name);
                bool sqldb_exists = File.Exists(sqldb_path);
                if(!sqldb_exists)
                {

                    //Adding new fields
                    //For adding new fields we have to define the field on the "create" query, in this case, we're adding "BirthDay" field which is VARCHAR
                    sqldb = SQLiteDatabase.OpenOrCreateDatabase(sqldb_path,null);
                    sqldb_query = "CREATE TABLE IF NOT EXISTS MyTable (_id INTEGER PRIMARY KEY AUTOINCREMENT, Art TEXT, Album VARCHAR, Artist VARCHAR, Country VARCHAR, Year INT, Genre VARCHAR, Style VARCHAR, Format VARCHAR);";

                    sqldb.ExecSQL(sqldb_query);
                    sqldb_message = "Database: " + sqldb_name + " created";
                }
                else
                {
                    sqldb = SQLiteDatabase.OpenDatabase(sqldb_path, null, DatabaseOpenFlags.OpenReadwrite);
                    sqldb_message = "Database: " + sqldb_name + " opened";
                }
                sqldb_available=true;
            }
            catch(SQLiteException ex) 
            {
                sqldb_message = ex.Message;
            }
        }
        //Adds a new record with the given parameters

        //Adding new fields
        //We have to modify the CRUD (Create, Read, Update and Delete) operations by adding the new "BirthDay" field, in this case, we're adding the new string parameter "sBirthDay"
        public void AddRecord(string @IMG, string sAlbum, string sArtist, string sCountry, int iYear, string sGenre, string sStyle, string sFormat)
        {
            try
            {
                //Adding new fields
                //We have to modify the CRUD (Create, Read, Update and Delete) operations by adding the new "BirthDay" field to the query and assign the value "sBirthDay"
                sqldb_query = "INSERT INTO MyTable (Art, Album, Artist, Country, Year, Genre, Style, Format) VALUES ('" + @IMG + "','" + sAlbum + "','" + sArtist + "','" + sCountry + "','" + iYear + "','" + sGenre + "','" + sStyle + "','" + sFormat + "');";

                sqldb.ExecSQL(sqldb_query);
                sqldb_message = "Record saved";
            }
            catch(SQLiteException ex) 
            {
                sqldb_message = ex.Message;
            }
        }

What changes should I make to the code to save an image as blob in database?

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