mysql存储图片的问题 - .NET技术 / C#
把图片存入到mysql中:
DateTime dt = (DateTime)para[0];
string plateNo = (string)para[1];
byte[] photo = (byte[])para[2];
string sqlString = "insert into table1(Time,PlateNo,PlateImg) VALUES(?dt,?plateNo,?photo)";
MySQLCommand dbCommand = new MySQLCommand();
dbCommand.Connection = dbConnection;
dbCommand.CommandText = sqlString;
dbCommand.CommandType = System.Data.CommandType.Text;
MySQLParameter mp1 = new MySQLParameter("?dt", System.Data.DbType.DateTime);
mp1.Value = dt;
dbCommand.Parameters.Add(mp1);
MySQLParameter mp2 = new MySQLParameter("?plateNo", System.Data.DbType.String);
mp2.Value = plateNo;
dbCommand.Parameters.Add(mp2);
MySQLParameter mp3 = new MySQLParameter("?photo", System.Data.DbType.Binary);
mp3.Value = photo;
dbCommand.Parameters.Add(mp3);
MessageBox.Show("photo length:" + ((byte[])(mp3.Value)).Length.ToString());
dbCommand.ExecuteNonQuery();
把图片读出来:
byt
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