“Table does not contain primary key”

Question

I am trying to populate a combo box based off of the value member that has been selected from a data grid view.

Here is my code to initialise it

            DataSet dsCIF2 = new DataSet();
            DataRow drPitch;
            String sqlPitch = @" Select * from Pitch";
            String connStr5 = Properties.Resources.cString;
            SqlDataAdapter daPitch = new SqlDataAdapter(sqlPitch, connStr5);
            DataTable dtPitch = new DataTable();
            daPitch.Fill(dtPitch);
            daPitch.Fill(dsCIF2, "Pitch");

            comboBox2.DisplayMember = "PitchDesc";
            comboBox2.ValueMember = "PitchID";
            comboBox2.DataSource = dtPitch;

With the following code I use this to find the ID of the pitch from the selected row on the data grid view and it returns the correct pitch ID, as seen through debugging.

 int matchBookingID = 0;
            matchBookingID = Convert.ToInt32(DGV.SelectedRows[0].Cells[0].Value);
            drMatchData = dsCIF.Tables["MatchStats"].Rows.Find(matchBookingID);
                Pitch = Convert.ToInt32(drMatchData["PitchID"].ToString());

Now when I try to use that ID to find the datarow within the pitch table I get an error saying

Table doesn't have a primary key

on this line of code

                drPitch = dsCIF2.Tables["Pitch"].Rows.Find(Pitch);

I don't know why I am getting this error, thanks in advance!

Update: The table does have a primary key SQL CODE

create TABLE PITCH
(
PitchID int NOT NULL,
PitchDesc varchar(30) NOT NULL,
CONSTRAINT pkPitchID PRIMARY KEY(PitchID),
)

Answer 1

Turns out I forgot to fill the schema of the table. It works now that I have added the following line of code to the initialisation code

daPitch.FillSchema(dsCIF2, SchemaType.Source, "Pitch");

It now looks like this

DataSet dsCIF2 = new DataSet();

String sqlPitch = @" Select * from Pitch";
String connStr5 = Properties.Resources.cString;
SqlDataAdapter daPitch = new SqlDataAdapter(sqlPitch, connStr5);
SqlCommandBuilder cmdBPitch = new SqlCommandBuilder(daPitch);

daPitch.FillSchema(dsCIF2, SchemaType.Source, "Pitch");

DataTable dtPitch = new DataTable();
daPitch.Fill(dtPitch);
daPitch.Fill(dsCIF2, "Pitch");