Question

I created a dataset (DataSet1.xsd). I then created a TableAdapter (DataTable1TableAdapter) and added a query (images below):

When I preview the data, I see exactly what I was expecting: lots of returned rows.

In my C# program, in the button1_Click event, I tried to type the following:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace MailingList
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.DataTable1TableAdapter.Fill(this.DataSet1.DataTable1);
            foreach (DataRow row in DataTable1.Rows)
            {
                // insert code here to work with the data
            }

        }
    }
}

The problem is that IntelliSense doesn’t recognize my datatable and places a squiggly red line under it. Since I described|desgined the datatable in the designer screen, shouldn’t it be available to me to use in my program? Or, do I have to define the datatable and add the columns to it within the program?

Thanks for any help!

Answer 1

You need to add the Dataset to Form1.

From MSDN:

Open the form or component you want to work with. If necessary, switch
to Design view of the designer. From the Data tab of the Toolbox, drag
a DataSet object onto the designer.

The Choose a Dataset dialog box appears. Select Typed Dataset, and
then from the drop-down list, select the dataset you want to use, and
then click OK.

The drop-down list is populated with a list of all typed dataset
classes in your project.