使用C＃将Access DB连接到VS

Question

This is the 1st time I am using C# connection with db, also I dont use access. I just want to know the initial steps required to connect the access db to visual studio C# windows application. I have searched though the internet, It helped a lot. I cant find my mistake in the code. I think I am missing some steps in establishing the connection with the db.

here is the error that appears when I try to run the program "'\\f38910\\Users\\kainat.baig\\Desktop\\AAA\\Database101' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides."

CODE:

OleDbConnection bookConn;
OleDbCommand oleDbCmd = new OleDbCommand();

String connParam = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source= \\f38910\Users\kainat.baig\Desktop\AAA\Database101; Persist Security Info=False";

    public Form1()
    {
        bookConn = new OleDbConnection(connParam);
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        bookConn.Open(); //*ERROR LINE
        oleDbCmd.Connection = bookConn;


        bookConn.Close();
     }

Answer 1

First your file name does not have the file extension name like .mdb

 Database101\MyDB.mdb

Second, if it is in a network. Would it be better if you net use first in you DOS prompt to assign a drive letter for your network, like:

 net use z: \\f38910\Users\kainat.baig\Desktop\AAA\Database101 your_password /USER:your_account

Then your connection string will be shorter then:

 String connParam = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source= z:\MyDB.mdb; Persist Security Info=False";

If the file extension by the way is .accdb instead of .mdb it should be:

 String connParam = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=z:\MyDB.mdb;;Persist Security Info=False;"

Or simply your path is simply wrong.

Go to windows explorer and just clink on the path where your file is and copy paste it.

Answer 2

You forget to add .mdb after database name or .accdb if you are using Microsoft Office Access 2007 or higher database but, for that you have to change Provider also.

String connParam = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source= \\f38910\Users\kainat.baig\Desktop\AAA\Database101.mdb; Persist Security Info=False";

Or you can use connection string like this

String connParam = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\f38910\Users\kainat.baig\Desktop\AAA\Database101.mdb;User Id=admin;Password=;"

EDITED:

for ACCESS 2010

@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=\\f38910\Users\kainat.baig\Desktop\AAA\Database101.accdb"