How do I add --select -- to a combobox loaded from SQL

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I cannot add --Select-- as the first item in a combobox loaded from a SQL table.

What I have tried:

    string query = "SELECT Name,ID from Contacts " +  
                   "ORDER BY Name" ;
    SqlDataAdapter da = new SqlDataAdapter(query, conn);
    conn.Open();
    DataSet ds = new DataSet();
     
    da.Fill(ds, "contacts");
    cbxContact.Items.Add(new { Text = "--Select--", Value = -1 });
    cbxContact.DisplayMember = "Name";
    cbxContact.ValueMember = "ID";
  
    cbxContact.DataSource = ds.Tables["contacts"];
    
}
catch (Exception ex)
{
    // write exception info to log or anything else
    MessageBox.Show("Error occured in Contacts!");
}

Posted 24-Jul-24 9:40am

Member 13694735

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[no name] 24-Jul-24 16:14pm

You are adding the "--Select--" at the end of the collection. You should use Insert to add it at the beginning.

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Brew Jones · Accepted Answer · 2024-07-24T12:22:00

string query = "select '[Select]' as name, 0 as id union Select name, id from contacts";

SqlDataAdapter da = new SqlDataAdapter(query, conn);
    conn.Open();
    DataSet ds = new DataSet();     
    da.Fill(ds, "contacts");
    cbxContact.DisplayMember = "Name";
    cbxContact.ValueMember = "ID";
  
    cbxContact.DataSource = ds.Tables["contacts"].DefaultView;