public static byte[] ExportExcel(DataTable dataTable, string heading = "", string timeReport = "", string creater = "", bool showSrNo = false, params string[] columnsToTake)
{
byte[] result = null;
using (ExcelPackage package = new ExcelPackage())
{
ExcelWorksheet workSheet = package.Workbook.Worksheets.Add(String.Format("{0} Data", heading));
int startRowFrom = String.IsNullOrEmpty(heading) ? 1 : 3;
// int columRow = 0;
if (showSrNo)
{
// columRow = 1;
DataColumn dataColumn = dataTable.Columns.Add("#", typeof(int));
dataColumn.SetOrdinal(0);
int index = 1;
foreach (DataRow item in dataTable.Rows)
{
item[0] = index;
index++;
}
}
//// headers
//foreach (string header in columnsToTake)
//{
// workSheet.Cells[startRowFrom , columRow].Value = header;
// columRow++;
//}
// add the content into the Excel file
workSheet.Cells["A" + startRowFrom].LoadFromDataTable(dataTable, true);
// autofit width of cells with small content
int columnIndex = 1;
foreach (DataColumn column in dataTable.Columns)
{
ExcelRange columnCells = workSheet.Cells[workSheet.Dimension.Start.Row, columnIndex, workSheet.Dimension.End.Row, columnIndex];
int maxLength = columnCells.DefaultIfEmpty().Max(cell => cell.Value == null ? 0 : cell.Value.ToString().Count());
if (maxLength < 150)
{
workSheet.Column(columnIndex).AutoFit();
}
columnIndex++;
}
// format header - bold, yellow on black
using (ExcelRange r = workSheet.Cells[startRowFrom, 1, startRowFrom, dataTable.Columns.Count])
{
r.Style.Font.Color.SetColor(System.Drawing.Color.White);
r.Style.Font.Bold = true;
r.Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
r.Style.Fill.BackgroundColor.SetColor(System.Drawing.ColorTranslator.FromHtml("#1fb5ad"));
}
// format cells - add borders
using (ExcelRange r = workSheet.Cells[startRowFrom + 1, 1, startRowFrom + dataTable.Rows.Count, dataTable.Columns.Count])
{
r.Style.Border.Top.Style = ExcelBorderStyle.Thin;
r.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
r.Style.Border.Left.Style = ExcelBorderStyle.Thin;
r.Style.Border.Right.Style = ExcelBorderStyle.Thin;
r.Style.Border.Top.Color.SetColor(System.Drawing.Color.Black);
r.Style.Border.Bottom.Color.SetColor(System.Drawing.Color.Black);
r.Style.Border.Left.Color.SetColor(System.Drawing.Color.Black);
r.Style.Border.Right.Color.SetColor(System.Drawing.Color.Black);
}
for (int i = dataTable.Columns.Count - 1; i >= 0; i--)
{
if (i == 0 && showSrNo)
{
continue;
}
if (!columnsToTake.Contains(dataTable.Columns[i].ColumnName))
{
workSheet.DeleteColumn(i + 1);
}
}
if (!String.IsNullOrEmpty(creater))
{
workSheet.Cells["A1"].Value = creater;
//workSheet.Cells[1, dataTable.Rows.Count].Merge = true;
workSheet.Cells["A1"].Style.Font.Size = 20;
//workSheet.InsertColumn(1, 1);
workSheet.InsertRow(1, 1);
workSheet.Column(1).Width = 5;
}
if (!String.IsNullOrEmpty(timeReport))
{
workSheet.Cells["A1"].Value = timeReport;
// workSheet.Cells[1, dataTable.Rows.Count].Merge = true;
workSheet.Cells["A1"].Style.Font.Size = 20;
//workSheet.InsertColumn(1, 1);
workSheet.InsertRow(1, 1);
workSheet.Column(1).Width = 5;
}
// add heading
if (!String.IsNullOrEmpty(heading))
{
workSheet.Cells["A1"].Value = heading;
workSheet.Cells[1, dataTable.Rows.Count].Merge = true;
workSheet.Cells["A1"].Style.Font.Size = 20;
//workSheet.InsertColumn(1, 1);
workSheet.InsertRow(1, 1);
workSheet.Column(1).Width = 5;
}
result = package.GetAsByteArray();
}
return(result);
}
