报表未显示在报表查看器中

Question

I have several reports displaying in my windows form application with no problems at all. I build them using the 'design new report' feature inside the report viewer with no code attached, other than a refresh when the page loads.

They are all working fine apart from one that is giving me a huge headache! There is nothing different with this one compared to the others as far as I can see, but this one displays 'No data available'?

There is data and I can preview it and display the data in a data grid view with no issues?

Are there certain reserved words or something that I am missing? I am trying to display the total amount of payments from customers. As simple as that?

Any help would be greatly appreciated!

Code for data grid view: //Populate payments datagrid view private void displayInGrid_Payments(string sqlcmd) { paymentsDataGridView.Rows.Clear();

        connect.Open();

        command.Connection = connect;
        command.CommandText = sqlcmd;

        reader = command.ExecuteReader();

        while (reader.Read())
        {
            // add a row ( get index )
            int arow = paymentsDataGridView.Rows.Add();

            paymentsDataGridView.Rows[arow].Cells[0].Value = reader["Customer_ID"].ToString();
            paymentsDataGridView.Rows[arow].Cells[1].Value = reader["Payment"].ToString();
            paymentsDataGridView.Rows[arow].Cells[2].Value = reader["Payment_Date"].ToString();

        }
        reader.Close();
        connect.Close();
    }

    //Display all payments
      private void button_display_payments_Click(object sender, EventArgs e)
    {
        command.CommandText = "SELECT PAYMENTS.Customer_ID, PAYMENTS.Payment, PAYMENTS.Payment_Date "
        + "from PAYMENTS LEFT JOIN CUSTOMERS ON PAYMENTS.Customer_ID = CUSTOMERS.Customer_ID";
        string cmd = command.CommandText;
        displayInGrid_Payments(cmd);
    }

Answer 1

I've had an issue in the past similar to this (like 5 years ago).

If you open your report rdlc file directly (it is just an XML file, open it in a text editor), and look for the datasources portion. Make sure you do not have more than 1 listed in there, or it may cause problems like this.

I'm not sure the cause. I was also using Visual Studio 2008 at the time. Hope it helps.