C#

public List<T> DatasettoList<T>(string commandText, CommandType commandType, IDbDataParameter[] parameters = null) where T : class, new()
        {
            DataSet dataSet = new DataSet();
            if ((commandType == null) || (commandText == null) || (commandText.Length == 0))
            {
                throw new Exception("Invailid command");
            }
            dataSet = GetDataSet(commandText, commandType, parameters);
            if (dataSet.Tables.Count == 0)
            {
                return null;
            }
            if (dataSet.Tables[0].Rows.Count == 0)
            {
                return null;
            }
            ProposalDownloadView prop = new ProposalDownloadView();
            List<ProposalDownloadView> proplist = new List<ProposalDownloadView>();
            List<T> list = new List<T>();
            var myData = dataSet.Tables[0].AsEnumerable().Select(r => new
            {
                UserId = r.Field<string>("UserId"),
                UseProposalNorId = r.Field<int>("UseProposalNorId"),
                FromDate = r.Field<decimal?>("FromDate"),
                ToDate = r.Field<decimal?>("ToDate")
            }).ToList();
            list = myData.ToList(); // this line creates the error
            return list;
        }

The below code works EXCEPT for one issue: the updated string has the following value in front of it: "System.Windows.Forms.TextBox,Text:"
Why is that there and how to be rid of it? The name of the field is masterRec. Code snippets follow:
FORM1 (main code) & FORM2 are the names I give them for purposes of this post and not their operating names. Don't think I am actually using the Get/Set apparatus.

FORM1 (In part):
FormUpdate fu = new FormUpdate(hotRec);     // INSTANTIATE UPDATE FORM CLASS
fu.action = "UP";                                                      // FormUpdate Action = UPDATE
fu.masterRec = hotRec;                                                 // Set local Master Record in FormUpdate
this.Visible = false;                                                  // Turn off visibility for this form 
fu.ShowDialog();                                                       // <--------------------------  THIS IS WHERE THE OTHER FORM EXECUTES!!!
this.Visible=true;                                                     // Turn on visibility for this form[/code]


FORM2 (In total):
namespace TestDictionary
{
    public partial class FormUpdate : Form
    {        
        //  V A R S 
       
        public string masterRec { get; set; }
        public string action { get; set; }
        private string siteId, logonID, pw, date, comments;

       // public FormUpdate()
       public FormUpdate(String myMaster)
           
        {
            InitializeComponent();
        }

        private void FormUpdate_Load(object sender, EventArgs e)    // F O R M   L O A D E D
        {
            // Disassemble the Master Record into its component fields to be displayed in this form

            if (action == "UP")
            {
                string[] tokens = masterRec.Split(',');
                siteId = tokens[0];
                logonID = tokens[1];
                pw = tokens[2];
                date = tokens[3];
                comments = tokens[4];

                websiteTextBox.Text = siteId;
                logonIDTextBox.Text = logonID;
                pwTextBox.Text = pw;
                dateTextBox.Text = date;
                commentsTextBox.Text = comments;
            }

        }

        private void Perform_Click(object sender, EventArgs e)       // P E R F O R M   B U T T O N  (AFTER UPDATES)
        {
            if (action == "UP")      // If Update, return updated Master (REASSEMBLED)
            masterRec = websiteTextBox + "," + logonIDTextBox.Text + "," + pwTextBox.Text + "," + dateTextBox.Text + "," + commentsTextBox.Text + ",";              
            this.Close();
        }
    }
}

THANK YOU FOR ANY HELP!

I have 2 projects in 1 solution. Where one of the project is included with a database manager class.

Projects

Then the second project is included with another class which have all properties of the form. That class is called Diseases class. I want store different types of diseases. Here I set the options of the input like only numbers or can't leave empty and so on.

Properties

I would to insert data from the form throw the properties class but can't see the properties class. I have a following error message:

The type or namespace name 'Diseases' could not be found (are you missing a using directive or an assembly reference?)

I'm lost. Anybody can help me please what I doing wrong?

1. The #IF symbols are ALL OVER THE CODE. It's a mess.
2. There are multiple project files that simply exist to compile different logic paths based on the symbol.

We are calling 2 methods using TPL
both methods return similar data type <string>

Task.WhenAll  returns a string array.

What is the best place to await.

Line 3 pattern
or
Line 4 + 5 pattern
or
Line 6 + 7 pattern

What is the reason for choosing one over the other pattern?
Appreciate any help.
==================================


1. Task<string> t1 = SomeMethod_A_ToCallStoredProcedure();
2. Task<string> t2 = SomeMethod_B_ToCallStoredProcedure();;


3. string[] X = await Task.WhenAll(t1,t2);


4. string[] X = Task.WhenAll(t1,t2)
5. await X;

6. string[] X = Task.WhenAll(t1,t2)
7. X.wait;

Windows Forms project. Panel is 1800 x 900 with a background image. Why is the image dark? I tried other images and they display correctly. I played around with settings and no luck. The second image is the original.

public DataSet ExecuteQuery()
      {
          // construct an empty result database to return

          DataTable table = ds.Tables["Fill_Data"];
          //DataTable table = ds.Tables[0];
          // Presuming the DataTable has a column named Date.
          string expression;
         //expression = "40Percent <" + lblTA.Text.ToString();
         expression = "40Percent = 0.355";

          DataRow[] foundRows;

         // Use the Select method to find all rows matching the filter.
         foundRows = table.Select(expression);

         // Print column 0 of each returned row.
         for (int i = 0; i < foundRows.Length; i++)
         {
             Console.WriteLine(foundRows[i][0]);
         }

         return ds;
      }