How to add multiple tables in dataset in C#

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C#

private void AcNotextBox_TextChanged(object sender, EventArgs e)
        {
            int id;
            if (!int.TryParse(AcNotextBox.Text, out id))
            {
                return;
            }
            string connString = ConfigurationManager.ConnectionStrings["dbx"].ConnectionString;

            string cmdString = "SELECT * FROM tblBasicInfo WHERE ID =" +Convert.ToString(AcNotextBox.Text);

            string cmdStringg = "SELECT * FROM tblAccData WHERE ID =" + Convert.ToString(AcNotextBox.Text);

            using (OleDbConnection conn = new OleDbConnection(connString))
            {
                using (OleDbCommand cmd = new OleDbCommand(cmdString, conn))
                {
                    cmd.Parameters.AddWithValue("ID", id);
                    conn.Open();

                    OleDbDataReader reader = cmd.ExecuteReader();
                    if (reader.Read())
                    {
                        NametextBox.Text = (reader["SName"].ToString());
                        FNametextBox.Text = (reader["FName"].ToString());
                        AddresstextBox.Text = (reader["Address"].ToString());
                        CelltextBox.Text = (reader["Cell"].ToString());
                        NationalitytextBox.Text = (reader["Nationality"].ToString());
                        ReligiontextBox.Text = (reader["Religion"].ToString());
                        FCNICNotextBox.Text = (reader["FCNICNo"].ToString());
                        FatherOccuptextBox.Text = (reader["FOccup"].ToString());
                        TransportFacilitytextBox.Text = (reader["TranFacility"].ToString());
                        InFiguredateTimePicker.Text = (reader["DOB"].ToString());
                        DateofAdmdateTimePicker.Text = (reader["DateofAdm"].ToString());
                        RegistrationNotextBox.Text = (reader["RegNo"].ToString());
                        TranFeetextBox.Text = (reader["TransportChr"].ToString());
                        SRemarkstextBox.Text = (reader["SpecialRemarks"].ToString());
                        ClassofcomboBox.Text = (reader["ClassofAdm"].ToString());
                        ClassOfReadcomboBox.Text = (reader["ClassofReading"].ToString());
                    }
                }

What I have tried:

how to add multi table data ne window fox 9 text box i want to set or fill, dispaly data in c# Please Help me

Posted 16-Feb-18 23:38pm

NOOR ULLAH JAN

Updated 17-Feb-18 2:04am

RickZeeland

v3

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RickZeeland · Answer 1 · 2018-02-17T00:16:00

See answers here: c# - Loading DataTable with multiple tables select query - Stack Overflow[^]

You can use INNER JOIN in Access as follows, see INNER JOIN Operation (Microsoft Access SQL)[^]

SELECT CategoryName, ProductName 
FROM Categories INNER JOIN Products 
ON Categories.CategoryID = Products.CategoryID;

Here is an example how to load a DataTable from Access, copied from Using Microsoft Access Database In C# . . . ADO.NET In Winforms/WPF For Beginners[^]

var conn = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0;Data Source=Store.mdb;");
conn.Open();
var dtCustomers = new DataTable();

var adapter = new OleDbDataAdapter("SELECT * FROM Customers;",
    conn);
adapter.Fill(dtCustomers);

dataGridView1.DataSource = dtCustomers;