Databases
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    <p>Try this instead:</p> <pre><code> private void stripSave_Click(object sender, EventArgs e) { int id; string code; SqlCeCommand cmd; /* If textbox is empty or input is not integer, then take the next id from table. Otherwise, id is set to input value. */ if (txt1.Text == String.Empty || !int.TryParse(txt1.Text, out id)) { /* Selects max id + 1 If the table is empty, the result will be null and coalesce will return 0 for the first id number */ code = "SELECT COALESCE((SELECT MAX(CustomerID) + 1 FROM Customers), 0);"; cmd = new SqlCeCommand(code, clsMain.con); id = (int)cmd.ExecuteScalar(); } code = "INSERT INTO Customers VALUES (@CustomerID, @Name, @Phone1, @Phone2, @Address, @Notes);"; cmd = new SqlCeCommand(code, clsMain.con); cmd.Parameters.AddWithValue("@CustomerID", id); cmd.Parameters.AddWithValue("@Name", txt2.Text); cmd.Parameters.AddWithValue("@Phone1", txt3.Text); cmd.Parameters.AddWithValue("@Phone2", txt4.Text); cmd.Parameters.AddWithValue("@Address", txt5.Text); cmd.Parameters.AddWithValue("@Notes", txt6.Text); cmd.ExecuteNonQuery(); MessageBox.Show("Data stored."); } </code></pre> <p>By the way, an important note about your code: Prefer to connect to database everytime you execute a query and close it afterwards. What I mean is that instead of keeping connection open for all the execution time, use something like this:</p> <pre><code> try { clsMain.con.Open(); cmd.ExecuteNonQuery(); clsMain.con.Close(); } catch (Exception ex) { if (clsMain.con.State != ConnectionState.Closed) clsMain.con.Close(); MessageBox.Show(ex.Message); } </code></pre>
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    1. POPopulating TextBox based on ComBox, Insert into Database through TextBox
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    1. COWeird this should work but i'm getting this exception; An unhandled exception of type 'System.Data.SqlServerCe.SqlCeException' occurred in System.Data.SqlServerCe.dll. No idea why!
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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