Question

I was wondering how could I retrieve the data from SQL server compact database that I just saved and insert it into textbox of newly created form. The source code is not complete, I just wanted to save space. Connection is fine, and I’m able to add data into database in the actual program. I just would like to know how to retrieve it and put it into textbox of newly created form. This is done in WinForms.Thank you!

    public void b1_Click(object sender, EventArgs e)
    {
        SqlCeCommand command = new SqlCeCommand("INSERT INTO tbl1(Name) VALUES (@Name, @LastName)", conn);
        command.Parameters.AddWithValue("@Name", t1.Text);

        command.ExecuteNonQuery();
    }


     private void b2_Click(object sender, EventArgs e)
     {    
        Form form2 = new Form();        
        form2.Show();

       t3.Location = new System.Drawing.Point(0, 35);
       t3.Size = new System.Drawing.Size(85, 15);
       //access database and insert data into textbox
       t3.Text = ?
       form2.Controls.Add(t3);

    }

Answer 1

Well it’s not to hard to just get a value from the database, something like this should suit your needs:

SqlCeCommand command = new SqlCeCommand("SELECT * FROM tbl1(Name) WHERE name = @Name AND last_name = @LastName", conn);
command.Parameters.AddWithValue("@Name", "Hank");
command.Parameters.AddWithValue("@Name", "Hill");
SqlDataReader reader = command.ExecuteReader();

t1.Text = reader.GetString(0);
t2.Text = reader.GetString(1);