how to have columns on GridView with different data sources?

Question

I am trying to dynamically create a GridView. One of the columns is the user who created the row.

JobDebrief jd = new JobDebrief(JobID);
Job jb = new Job(JobID);
DataGrid db = JobClass.Job_Piece.BuildGrid();
db.Columns.Add(CreateBoundColumn(jd.DbriefedByUser, "User"));
PlaceHolder.Controls.Add(db);
db.DataSource = jb.Pieces;
db.DataBind();

I created the GridView in the BuildGrid function which is in the job_piece class.

    public static DataGrid BuildGrid()
    {
          DataGrid NewDg = new DataGrid();

          NewDg.DataKeyField = "ID";
          NewDg.AutoGenerateColumns = false;
          NewDg.CssClass = "tblResults";
          NewDg.HeaderStyle.CssClass = "tblResultsHeader";
          NewDg.AlternatingItemStyle.CssClass = "ResultsStyleAlt";
          NewDg.ItemStyle.CssClass = "ResultsStyle";

          NewDg.Columns.Add(Load.CreateBoundColumn("AdvisedQty", "Qty Advised"));
          NewDg.Columns.Add(Load.CreateBoundColumn("PieceTypeString", "Piece Type"));
          NewDg.Columns.Add(Load.CreateBoundColumn("ReceivedQty", "Rcvd Qty"));          

          NewDg.Width = Unit.Percentage(100.00);

          return NewDg;
    }

public static BoundColumn CreateBoundColumn(string DataField, string Header,string CssClass ="",bool Highlight = false)
    {
        BoundColumn column = new BoundColumn();
        column.DataField = DataField;
        column.HeaderText = Header;
        column.SortExpression = DataField;

        if (Highlight)
        {
            column.ItemStyle.CssClass = "ColumnHighlight";
        }

        if (!string.IsNullOrEmpty(CssClass))
        {
            column.ItemStyle.CssClass = CssClass;
        }
        return column;
    }

The 3 columns it is currently displaying all come from job_piece. Since user doesn't belong to this class I tried to create the column outside of this function.

The column displays the header but the rows are blank. The username comes from the JobDebrief class. But since I am binding the GridView to the pieces, db.DataSource = jb.Pieces; its not finding the information. Is it possible to set the user column to a different DataSource?

Answer 1

The simplest answar will be create a new datatable and assign all values in it

  DataTable dt= jb.Pieces.CopyToDataTable();
  dt.Columns.Add("UserId")
  for(int i=0;i<dt.Rows.Count;i++)
  {
        dt.Rows[i]=//Your info
  }
  db.DataSource = dt;
  db.DataBind();