private int WriteHeader(ExcelWorksheet worksheet, int row, int startCol, SpreadsheetHeaders headers)
{
List <SpreadsheetHeaders.TreeNode> currentNodes = new List <SpreadsheetHeaders.TreeNode>();
List <SpreadsheetHeaders.TreeNode> allNodes = new List <SpreadsheetHeaders.TreeNode>();
currentNodes.Add(headers.Root);
while (currentNodes.Count > 0)
{
var node = currentNodes[0];
currentNodes.RemoveAt(0);
if (node.Parent != null)
{
allNodes.Add(node);
}
currentNodes.AddRange(node.Children);
}
foreach (var node in allNodes)
{
string addr = GetAddress(row + node.RowOffset, startCol + node.ColOffset);
worksheet.Cells[addr].Value = node.Value;
}
foreach (var node in allNodes)
{
if (node.ColSpan == 1 && node.RowSpan == 1)
{
continue;
}
string start = GetAddress(row + node.RowOffset, startCol + node.ColOffset);
string end = GetAddress(row + node.RowOffset + node.RowSpan - 1, startCol + node.ColOffset + node.ColSpan - 1);
worksheet.Cells[start + ":" + end].Merge = true;
}
int maxRow = row;
foreach (var node in allNodes)
{
var current = row + node.RowOffset + node.RowSpan;
if (current > maxRow)
{
maxRow = current;
}
}
return(maxRow);
}
public byte[] WriteToBytes(List <Region> parentRegions, List <Region> regions, List <TAllocation> allocations)
{
byte[] output = null;
int startRow = 2;
int startCol = 2;
using (var package = new ExcelPackage())
{
var worksheet = package.Workbook.Worksheets.Add("Sheet 1");
var headers = new SpreadsheetHeaders(typeof(TAllocation));
int row = startRow;
row = WriteHeader(worksheet, row, startCol, headers);
int headerEndRow = row - 1;
foreach (var group in regions.GroupBy(r => r.fkParentId).OrderBy(g => g.Key))
{
var parentRegion = parentRegions.First(r => r.Id == group.Key);
WriteGroupRow(worksheet, parentRegion.Id, row, startCol, headers, parentRegion);
row += 1;
bool isAlternatingColor = false;
foreach (var region in group.OrderBy(r => r.Id))
{
var allocation = allocations.FirstOrDefault(a => a.fkRegionId == region.Id);
WriteDataRow(worksheet, isAlternatingColor, region.Id, row, startCol, headers, region, allocation);
row += 1;
isAlternatingColor = !isAlternatingColor;
}
}
int col = startCol;
foreach (var leaf in headers.Root.Leafs)
{
var attr = (SpreadsheetHeaderAttribute)Attribute.GetCustomAttribute(leaf.Property, typeof(SpreadsheetHeaderAttribute));
if (attr.Width.HasValue)
{
worksheet.Column(col).Width = attr.Width.Value;
}
col += 1;
}
var tableAddr = GetAddress(startRow, startCol) + ":" + GetAddress(row - 1, startCol + headers.Root.ColSpan - 1);
worksheet.Cells[tableAddr].Style.Border.Top.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
worksheet.Cells[tableAddr].Style.Border.Bottom.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
worksheet.Cells[tableAddr].Style.Border.Left.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
worksheet.Cells[tableAddr].Style.Border.Right.Style = OfficeOpenXml.Style.ExcelBorderStyle.Thin;
worksheet.Cells[tableAddr].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thick);
var headerAddr = GetAddress(startRow, startCol) + ":" + GetAddress(headerEndRow, startCol + headers.Root.ColSpan - 1);
worksheet.Cells[headerAddr].Style.Font.Bold = true;
worksheet.Cells[headerAddr].Style.Font.Color.SetColor(System.Drawing.Color.White);
worksheet.Cells[headerAddr].Style.Fill.PatternType = ExcelFillStyle.Solid;
worksheet.Cells[headerAddr].Style.Fill.BackgroundColor.SetColor(System.Drawing.Color.FromArgb(79, 129, 189));
worksheet.Cells[headerAddr].Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
worksheet.Cells[headerAddr].Style.VerticalAlignment = OfficeOpenXml.Style.ExcelVerticalAlignment.Center;
worksheet.Cells[headerAddr].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thick);
var stream = new MemoryStream(package.GetAsByteArray());
output = stream.ToArray();
}
return(output);
}
private void WriteDataRow(ExcelWorksheet worksheet, bool isAlternatingColor, String no, int row, int startCol, SpreadsheetHeaders headers,
Region region, TAllocation allocation)
{
worksheet.Cells[GetAddress(row, startCol)].Value = no;
worksheet.Cells[GetAddress(row, startCol + 1)].Value = region.Name;
int colOffset = 2;
foreach (var leaf in headers.Root.Leafs)
{
if (leaf.Property.Name != "RegionName" && leaf.Property.Name != "No")
{
var value = allocation == null ? null : leaf.Property.GetValue(allocation);
var addr = GetAddress(row, startCol + colOffset);
worksheet.Cells[addr].Value = value;
if (leaf.Property.PropertyType == typeof(decimal) || leaf.Property.PropertyType == typeof(double) || leaf.Property.PropertyType == typeof(int))
{
worksheet.Cells[addr].Style.Numberformat.Format = "#,##0";
}
colOffset++;
}
}
if (isAlternatingColor)
{
var rowAddr = GetAddress(row, startCol) + ":" + GetAddress(row, startCol + headers.Root.ColSpan - 1);
worksheet.Cells[rowAddr].Style.Fill.PatternType = ExcelFillStyle.Solid;
worksheet.Cells[rowAddr].Style.Fill.BackgroundColor.SetColor(System.Drawing.Color.FromArgb(220, 230, 241));
}
}
private void WriteGroupRow(ExcelWorksheet worksheet, String no, int row, int startCol, SpreadsheetHeaders headers, Region region)
{
worksheet.Cells[GetAddress(row, startCol)].Value = no;
worksheet.Cells[GetAddress(row, startCol + 1)].Value = region.Name;
var groupAddr = GetAddress(row, startCol) + ":" + GetAddress(row, startCol + headers.Root.ColSpan + 1);
worksheet.Cells[groupAddr].Style.Font.Bold = true;
worksheet.Cells[groupAddr].Style.Font.Color.SetColor(System.Drawing.Color.Red);
if (headers.Root.ColSpan > 2)
{
worksheet.Cells[GetAddress(row, startCol + 1) + ":" + GetAddress(row, startCol + headers.Root.ColSpan - 1)].Merge = true;
}
}