请教SQLite数据库读写BLOB字段

// 连接字符串 data source=d:\testdb3;password=1234

SQLiteConnectionStringBuilder connStr = new SQLiteConnectionStringBuilder();

connStrDataSource = @"d:\testdb3";

connStrPassword = "1234";

conn = new SQLiteConnection(connStrToString());

connOpen();

// 插入数据

string SQL = "INSERT INTO test(k) VALUES(:k)";

SQLiteCommand cmd = connCreateCommand();

cmdCommandText = SQL;

// 取图标，准备插入到数据库BLOB字段

FileStream picStream = FileOpenRead(@"d:\1bmp");

byte[] bArray = new byte[picStreamLength];

picStreamRead(bArray, 0, bArrayLength);

picStreamClose();

cmdParametersAdd("k", DbTypeBinary)Value = bArray; // BLOB

cmdExecuteNonQuery();

//取出数据

cmdCommandText = "SELECT k FROM test";

SystemDataSQLiteSQLiteDataReader reader = cmdExecuteReader();

while (readerRead())

{

MemoryStream streamImage = new MemoryStream(reader["k"] as byte[]);

pictureBox1Image = ImageFromStream(streamImage);

streamImageClose(); // 关闭流

}

readerclose();

connclose();

选择开始菜单中→程序→Management SQL Server 2008→SQL Server Management Studio命令，打开SQL Server Management Studio窗口，并使用Windows或 SQL Server身份验证建立连接。

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