pdf data sort

PLibs/PdfHelperFW/PdfHelper.cs

@@ -25,6 +25,8 @@ namespace PdfHelperFW
         readonly int MARGIN_LEFT = 20;
         readonly int MARGIN_TOP = 45;
 
+        readonly bool SORT_ASC = true;
+
         // Elements
         readonly bool _enableNoCol = true;
         readonly double NO_COL_MARGIN = 4;
@@ -59,7 +61,7 @@ namespace PdfHelperFW
         readonly double LOGO_Y_MARGIN = 5;
         MemoryStream _ms;
 
-        public PdfHelper(DataTable table, int timestampColIdx = 0, bool enableNoCol = true)
+        public PdfHelper(DataTable table, int timestampColIdx = 0, bool enableNoCol = true, bool sortAsc = true)
         {
             if (table.Columns.Count - 1 > MAX_CELL_COLUMN_COUNT)
                 throw new ArgumentException($"The number of data should be less than {MAX_CELL_COLUMN_COUNT}");
@@ -69,6 +71,8 @@ namespace PdfHelperFW
 
             _enableNoCol = enableNoCol;
 
+            SORT_ASC = sortAsc;
+
             // Check cell width
             CELL_WIDTH = ALL_CELL_WIDTH / (table.Columns.Count - 1);
 
@@ -83,7 +87,7 @@ namespace PdfHelperFW
             _format.Alignment = XStringAlignment.Center;
         }
 
-        public PdfHelper(DataTable table, string logoPath, double logoHeight, int timestampColIdx = 0, bool enableNoCol = true) : this(table, timestampColIdx, enableNoCol)
+        public PdfHelper(DataTable table, string logoPath, double logoHeight, int timestampColIdx = 0, bool enableNoCol = true, bool sortAsc = true) : this(table, timestampColIdx, enableNoCol, sortAsc)
         {
             if (string.IsNullOrEmpty(logoPath) || !File.Exists(logoPath) ||
                 logoHeight >= MARGIN_TOP - LOGO_Y_MARGIN)
@@ -96,7 +100,7 @@ namespace PdfHelperFW
             LOGO_Y = MARGIN_TOP - LOGO_HEIGHT - LOGO_Y_MARGIN;
         }
 
-        public PdfHelper(DataTable table, Bitmap logoBitmap, double logoHeight, int timestampColIdx = 0, bool enableNoCol = true) : this(table, timestampColIdx, enableNoCol)
+        public PdfHelper(DataTable table, Bitmap logoBitmap, double logoHeight, int timestampColIdx = 0, bool enableNoCol = true, bool sortAsc = true) : this(table, timestampColIdx, enableNoCol, sortAsc)
         {
             if (logoBitmap == null
                 || logoHeight >= MARGIN_TOP - LOGO_Y_MARGIN)
@@ -117,7 +121,19 @@ namespace PdfHelperFW
 
         public void Save(string targetPath)
         {
-            for (int startRow = 0; startRow < _table.Rows.Count; startRow += ROW_COUNT_PER_PAGE)
+            EnumerableRowCollection sorted;
+            if (SORT_ASC)
+                sorted = _table.AsEnumerable().OrderBy(row => row.Field<DateTime>(_timestampColIdx));
+            else
+                sorted = _table.AsEnumerable().OrderByDescending(row => row.Field<DateTime>(_timestampColIdx));
+
+            DataTable sortedTable = _table.Clone();
+            foreach (DataRow row in sorted)
+            {
+                sortedTable.ImportRow(row);
+            }
+
+            for (int startRow = 0; startRow < sortedTable.Rows.Count; startRow += ROW_COUNT_PER_PAGE)
             {
                 PdfPage page = _document.AddPage();
                 page.Size = PdfSharp.PageSize.A4;
@@ -130,7 +146,7 @@ namespace PdfHelperFW
                 // Header
                 double x = MARGIN_LEFT;
                 double y = MARGIN_TOP;
-                int endRow = Math.Min(startRow + ROW_COUNT_PER_PAGE, _table.Rows.Count);
+                int endRow = Math.Min(startRow + ROW_COUNT_PER_PAGE, sortedTable.Rows.Count);
                 double cellWidth = CELL_WIDTH;
                 double noCellWidth = 0;
                 // Cell width recalculation
@@ -138,7 +154,7 @@ namespace PdfHelperFW
                 {
                     int maxNo = endRow + 1;
                     noCellWidth = MeasureStringWidth(xg, maxNo.ToString(), _font) + NO_COL_MARGIN;
-                    cellWidth = (ALL_CELL_WIDTH - noCellWidth) / (_table.Columns.Count - 1);
+                    cellWidth = (ALL_CELL_WIDTH - noCellWidth) / (sortedTable.Columns.Count - 1);
 
                     XRect rect = new XRect(x, y, noCellWidth, CELL_HEIGHT);
                     xg.DrawRectangle(HEADER_RECT_STYLE, rect);
@@ -148,7 +164,7 @@ namespace PdfHelperFW
                     x += noCellWidth;
                 }
 
-                for (int col = 0; col < _table.Columns.Count; col++)
+                for (int col = 0; col < sortedTable.Columns.Count; col++)
                 {
                     double increment = 0;
                     XRect rect;
@@ -165,7 +181,7 @@ namespace PdfHelperFW
 
                     xg.DrawRectangle(HEADER_RECT_STYLE, rect);
                     xg.DrawRectangle(RECT_EDGE_PEN, rect);
-                    xg.DrawString(_table.Columns[col].ColumnName, _boldFont, HEADER_STRING_COLOR, rect, _format);
+                    xg.DrawString(sortedTable.Columns[col].ColumnName, _boldFont, HEADER_STRING_COLOR, rect, _format);
 
                     x += increment;
                 }
@@ -184,7 +200,7 @@ namespace PdfHelperFW
                         x += noCellWidth;
                     }
                     
-                    for (int col = 0; col < _table.Columns.Count; col++)
+                    for (int col = 0; col < sortedTable.Columns.Count; col++)
                     {
                         double increment = 0;
                         XRect rect;
@@ -192,14 +208,14 @@ namespace PdfHelperFW
                         if (col == _timestampColIdx)
                         {
                             rect = new XRect(x, y, TIMESTAMP_CELL_WIDTH, CELL_HEIGHT);
-                            DateTime date = (DateTime)_table.Rows[row][col];
+                            DateTime date = (DateTime)sortedTable.Rows[row][col];
                             value = date.ToString("yyyy-MM-dd HH:mm:ss");
                             increment = TIMESTAMP_CELL_WIDTH;
                         }
                         else
                         {
                             rect = new XRect(x, y, cellWidth, CELL_HEIGHT);
-                            value = _table.Rows[row][col].ToString();
+                            value = sortedTable.Rows[row][col].ToString();
                             increment = cellWidth;
                         }