Load data from db insert into another

Hi could someone give me a quick example of loading data from DB1.table into DB2.table (win forms)
so far..

{

        OleDbConnection conn;
        OleDbDataAdapter dAdapter;
        DataSet ds;

        try
        {

            string strdblocation = textBox1.Text;
            string cmdString = "Select Email, Initials FROM tblrequest";
            conn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + strdblocation + "'");
            dAdapter = new OleDbDataAdapter(cmdString, conn);
            ds = new DataSet();
           
            //ds.Clear();
            dAdapter.Fill(ds, "tblrequest");
          dataGridView1.DataSource = ds;
        dataGridView1.DataMember = "tblrequest";
   
        }
        catch (Exception ex)
        {
            label2.Text = ex.ToString();
        }

I want to then insert the data into a sql database:Maindb, table: eaddress. fields: eName & eClient
LVL 2
ziwez0Asked:
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DarkXiphoidConnect With a Mentor Commented:
After getting the dataset from your above code:

//insert your SQL server connection process here: make the connection, and open it.

        foreach (DataRow row in ds.Tables[0].Rows)
        {
sqlCom Command = new SqlCommand;
sqlCom.CommandText = @"INSERT INTO eadress (eName, eClient) VALUES (?eName, ?eClient);
string eName = row[Email].ToString();
sqlCom.Parameters.Add("?eName", eName);  
string eClient = row[Initials].ToString();
sqlCom.Paramaters.Add("?eClient", eClient);  
sqlCom.ExecuteNonQuery;
        }

I hope this works, I didn't test it though. The row[Initials] and row[Email] part might have slightly wrong syntax - tinker around with it a bit :)

I hope this helps.

Regards,

Robert
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Gautham JanardhanConnect With a Mentor Commented:
above example is a good option if performance is not an issue ... the problem is that the query would run for as many rows in the data table

another soln is

Fill another dataset  with an adapterwith the table u want to insert into with a where clause like 1=2 so no data would
be present but u would get the data structure

then u could pium data from the first data set to the second using the code above
and the after that call



dataadapter.update(dataset2)
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ziwez0Author Commented:
opps got an error "System.IndexOutOfRangeException"

foreach (DataRow row in ds.Tables["tblrequest"].Rows)
                            {

                          SqlCeCommand command = connection.CreateCommand();
                                           
                                SqlCeCommand sqlCom = new SqlCeCommand();
                                           
                                command.CommandText = @"INSERT INTO Eaddress (name, emailad) VALUES (@Email, @Initials)";
                                string stremail = row["Email"].ToString();
                               
                                command.Parameters.Add("Email", stremail);
                                string strclient = row["Initials"].ToString();
                                command.Parameters.Add("Initials", strclient);
                                command.ExecuteNonQuery();
                         
                            }
                    connection.Close();
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ziwez0Author Commented:
This worked

string stremail = row["Email"].ToString();
  command.CommandText = @"INSERT INTO Eaddress (name) VALUES ('" + stremail + "')";

why did the command.Parameters not work?
                               
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DarkXiphoidCommented:
I don't know - I'm used to MySql so I might have a syntax error. But if it works using your way - thats perfect!

Are you getting any other errors or does it work now?
0
 
ziwez0Author Commented:
works now, thanks for all your help. (no other errors)
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