I have DataTable object. How can I export it into an XLS file? I tried to render it via DataGrid
DataGrid dgGrid = new DataGrid();
dgGrid.DataSource = dt;
dgGrid.DataBind();
dgGrid.RenderControl(hw);
but the file is very large and the OutOfMemoryException appears.
I can use http://epplus.codeplex.com/. I need C# function.
There are a number of options, one of them being the Access OLE DB Provider which also operates in terms of DataTables.
If you want more fine-grained support over the document, I'd recommend the Open XML SDK 2.0, whixh is .xmlx only.
For raw data, I think that Access OLE DB (also reffered to as the ACE provider) is the best choice since it enables a database-like experience. Open XML assumes fairly good knowledge of XML and the willingnes to experiment a bit more. On the other hand, you can apply formatting, add formulas and other advanced features.
Ok, find a solution here: http://bytesofcode.hubpages.com/hub/Export-DataSet-and-DataTable-to-Excel-2007-in-C
Just download epplus library and call method:
private void GenerateExcel(DataTable dataToExcel, string excelSheetName)
{
string fileName = "ByteOfCode";
string currentDirectorypath = Environment.CurrentDirectory;
string finalFileNameWithPath = string.Empty;
fileName = string.Format("{0}_{1}", fileName, DateTime.Now.ToString("dd-MM-yyyy"));
finalFileNameWithPath = string.Format("{0}\\{1}.xlsx", currentDirectorypath, fileName);
//Delete existing file with same file name.
if (File.Exists(finalFileNameWithPath))
File.Delete(finalFileNameWithPath);
var newFile = new FileInfo(finalFileNameWithPath);
//Step 1 : Create object of ExcelPackage class and pass file path to constructor.
using (var package = new ExcelPackage(newFile))
{
//Step 2 : Add a new worksheet to ExcelPackage object and give a suitable name
ExcelWorksheet worksheet = package.Workbook.Worksheets.Add(excelSheetName);
//Step 3 : Start loading datatable form A1 cell of worksheet.
worksheet.Cells["A1"].LoadFromDataTable(dataToExcel, true, TableStyles.None);
//Step 4 : (Optional) Set the file properties like title, author and subject
package.Workbook.Properties.Title = @"This code is part of tutorials available at http://bytesofcode.hubpages.com";
package.Workbook.Properties.Author = "Bytes Of Code";
package.Workbook.Properties.Subject = @"Register here for more http://hubpages.com/_bytes/user/new/";
//Step 5 : Save all changes to ExcelPackage object which will create Excel 2007 file.
package.Save();
MessageBox.Show(string.Format("File name '{0}' generated successfully.", fileName)
, "File generated successfully!", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
First of all, Google is your best friend. Also you can search on this site.
Some solutions:
