我將音頻文件成功保存在MySQL數據庫中,但我不知道如何從數據庫中檢索和播放。任何幫助將不勝感激。使用c插入和檢索MySQL中的音頻文件#
這是我插入代碼:
private void button2_Click(object sender, EventArgs e)
{
try
{
MySqlConnection connection;
string cs = @"server = 127.0.0.1; userid = root; pwd = ; database = atlfmdb;";
connection = new MySqlConnection(cs);
if (upload.Text.Length > 0 &&
vName.Text.Length > 0 &&
vTel.Text.Length>0 &&
tbposition.Text.Length>0)
{
string FileName = upload.Text;
byte[] f = File.ReadAllBytes(upload.Text) ;
MySqlCommand selectcom = new MySqlCommand("insert into interinterview(intName,intPosition,intTel,audioFile)values('" + vName.Text + "','" + tbposition.Text + "','" + vTel.Text + "','" + f + "')", connection);
MySqlDataReader myread;
connection.Open();
myread = selectcom.ExecuteReader();
while (myread.Read())
{
}
connection.Close();
MessageBox.Show("Data saved successfully");
vName.Text = "";
vTel.Text = "";
tbposition.Text = "";
upload.Text = "";
}
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void button1_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "Audio files | *.mp3";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
upload.Text = openFileDialog1.FileName;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}
我不明白。你將這些值保存到你的數據庫,但你不能從數據庫中讀取它們?你應該總是使用[參數化查詢](http://blog.codinghorror.com/give-me-parameterized-sql-or-give-me-death/)。這種字符串連接對於[SQL注入](http://en.wikipedia.org/wiki/SQL_injection)攻擊是開放的。並使用'using'語句處理您的數據庫連接和對象 – 2014-10-27 13:11:24
我可以檢索其餘數據,但不能檢索音頻文件。 – 2014-10-27 14:03:22
我試圖使用媒體播放器播放音頻文件,但它說文件有.datarowview擴展名 – 2014-10-29 13:04:55