获取AES_DECRYPT值从ASP.NET网页“MySQL的”

Question

我的“MySQL连接”是完全在ASP.NET

工作

我可以在数据库中插入值完全

的问题时，当我想从下表得到一个密码值

The Table has columns as, 
ID->Integer 
name->Varchar 
mobile_no->VarChar 
password->blob 

Password column gives me problem 

    MySqlCommand cmd2=new MySqlCommand("SELECT AES_DECRYPT(password,'qwerty') FROM mytable1 where mobile_no=@z2", connection); 

    cmd2.Parameters.AddWithValue("@z2", TextBox1.Text); 

    String pass = cmd2.ExecuteScalar().ToString(); 


The 3rd line is giving me problem. 

I want to compare this "pass" with ""Textbox2.text"" 

OR 

I want to display that password on webpage (just fro try) 

i.e., ""Label1.text=pass"" 

Its displaying this on Label...... ""System.Byte[] "" 

Answer 1

尝试这样的：

MySqlCommand cmd2=new MySqlCommand("SELECT AES_DECRYPT(password,'qwerty') FROM mytable1 where mobile_no=@z2", connection); 

    cmd2.Parameters.AddWithValue("@z2", TextBox1.Text); 

     //prepare adapter to run query 
     adapter = new MySqlDataAdapter(cmd2); 
     DataTable Dt = new DataTable(); 
     //get query results in DataTable 
     adapter.Fill(Dt); 
string pass = Dt.Rows[0][0].ToString(); 
    // your password contains Byte array as You said it is showing System.Byte[] 
//You should convert it /Decode it into proper Plain text 

编辑 取决于你的编码，你可以尝试这样的

string result = System.Text.Encoding.Default.GetString(pass); 

string result = System.Text.Encoding.UTF8.GetString(pass); 

//dispaly result on label