This is what i am trying to do.
1.Create excel file(.xlsx) c://test/files/work1_4.13.14.xlsx with name + value(date)
example: work1_4.13.14.xlsx
2.Set headers to the file example: [Name] [Age] [City].
3.I have 3 List with names,ages,city that i need to fill into excel sheet.
This is my goal
Name Age City Ben 20 xyz Jack 25 xyz Mike 45 zyx
Any ideas?
Answers:
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Method 1
Try this code
Microsoft.Office.Interop.Excel.Application oXL;
Microsoft.Office.Interop.Excel._Workbook oWB;
Microsoft.Office.Interop.Excel._Worksheet oSheet;
Microsoft.Office.Interop.Excel.Range oRng;
object misvalue = System.Reflection.Missing.Value;
try
{
//Start Excel and get Application object.
oXL = new Microsoft.Office.Interop.Excel.Application();
oXL.Visible = true;
//Get a new workbook.
oWB = (Microsoft.Office.Interop.Excel._Workbook)(oXL.Workbooks.Add(""));
oSheet = (Microsoft.Office.Interop.Excel._Worksheet)oWB.ActiveSheet;
//Add table headers going cell by cell.
oSheet.Cells[1, 1] = "First Name";
oSheet.Cells[1, 2] = "Last Name";
oSheet.Cells[1, 3] = "Full Name";
oSheet.Cells[1, 4] = "Salary";
//Format A1:D1 as bold, vertical alignment = center.
oSheet.get_Range("A1", "D1").Font.Bold = true;
oSheet.get_Range("A1", "D1").VerticalAlignment =
Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
// Create an array to multiple values at once.
string[,] saNames = new string[5, 2];
saNames[0, 0] = "John";
saNames[0, 1] = "Smith";
saNames[1, 0] = "Tom";
saNames[4, 1] = "Johnson";
//Fill A2:B6 with an array of values (First and Last Names).
oSheet.get_Range("A2", "B6").Value2 = saNames;
//Fill C2:C6 with a relative formula (=A2 & " " & B2).
oRng = oSheet.get_Range("C2", "C6");
oRng.Formula = "=A2 & " " & B2";
//Fill D2:D6 with a formula(=RAND()*100000) and apply format.
oRng = oSheet.get_Range("D2", "D6");
oRng.Formula = "=RAND()*100000";
oRng.NumberFormat = "$0.00";
//AutoFit columns A:D.
oRng = oSheet.get_Range("A1", "D1");
oRng.EntireColumn.AutoFit();
oXL.Visible = false;
oXL.UserControl = false;
oWB.SaveAs("c:\test\test505.xls", Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookDefault, Type.Missing, Type.Missing,
false, false, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange,
Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
oWB.Close();
oXL.Quit();
//...
Method 2
You can use ClosedXML for this.
Store your table in a DataTable and you can export the table to excel by this simple snippet:
XLWorkbook workbook = new XLWorkbook(); DataTable table = GetYourTable(); workbook.Worksheets.Add(table );
You can read the documentation of ClosedXML to learn more. Hope this helps!
Method 3
Hope here is the exact what we are looking for.
private void button2_Click(object sender, RoutedEventArgs e)
{
UpdateExcel("Sheet3", 4, 7, "<a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="ce80afa3afada6a78ea9a3afa7a2">[email protected]</a>");
}
private void UpdateExcel(string sheetName, int row, int col, string data)
{
Microsoft.Office.Interop.Excel.Application oXL = null;
Microsoft.Office.Interop.Excel._Workbook oWB = null;
Microsoft.Office.Interop.Excel._Worksheet oSheet = null;
try
{
oXL = new Microsoft.Office.Interop.Excel.Application();
oWB = oXL.Workbooks.Open("d:\MyExcel.xlsx");
oSheet = String.IsNullOrEmpty(sheetName) ? (Microsoft.Office.Interop.Excel._Worksheet)oWB.ActiveSheet : (Microsoft.Office.Interop.Excel._Worksheet)oWB.Worksheets[sheetName];
oSheet.Cells[row, col] = data;
oWB.Save();
MessageBox.Show("Done!");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
if (oWB != null)
oWB.Close();
}
}
Method 4
It is possible to write to an excel file without opening it using the Microsoft.Jet.OLEDB.4.0 and OleDb. Using OleDb, it behaves as if you were writing to a table using sql.
Here is the code I used to create and write to an new excel file. No extra references are needed
var connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:SomePathExcelWorkBook.xls;Extended Properties=Excel 8.0";
using (var excelConnection = new OleDbConnection(connectionString))
{
// The excel file does not need to exist, opening the connection will create the
// excel file for you
if (excelConnection.State != ConnectionState.Open) { excelConnection.Open(); }
// data is an object so it works with DBNull.Value
object propertyOneValue = "cool!";
object propertyTwoValue = "testing";
var sqlText = "CREATE TABLE YourTableNameHere ([PropertyOne] VARCHAR(100), [PropertyTwo] INT)";
// Executing this command will create the worksheet inside of the workbook
// the table name will be the new worksheet name
using (var command = new OleDbCommand(sqlText, excelConnection)) { command.ExecuteNonQuery(); }
// Add (insert) data to the worksheet
var commandText = $"Insert Into YourTableNameHere ([PropertyOne], [PropertyTwo]) Values (@PropertyOne, @PropertyTwo)";
using (var command = new OleDbCommand(commandText, excelConnection))
{
// We need to allow for nulls just like we would with
// sql, if your data is null a DBNull.Value should be used
// instead of null
command.Parameters.AddWithValue("@PropertyOne", propertyOneValue ?? DBNull.Value);
command.Parameters.AddWithValue("@PropertyTwo", propertyTwoValue ?? DBNull.Value);
command.ExecuteNonQuery();
}
}
Method 5
Recently, I tried npoi and it was very simple.
As requested, let’s make code that output data to work1_4.13.14.xlsx file like:
Name Age City Ben 20 xyz Jack 25 xyz Mike 45 zyx
Here’s code
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System.IO;
namespace ExcelWriter
{
class Program
{
static void Main(string[] args)
{
IWorkbook workbook = new XSSFWorkbook();
ISheet sheet1 = workbook.CreateSheet("Sheet1");
IRow row1 = sheet1.CreateRow(0);
row1.CreateCell(0).SetCellValue("Name");
row1.CreateCell(1).SetCellValue("Age");
row1.CreateCell(2).SetCellValue("City");
IRow row2 = sheet1.CreateRow(1);
row2.CreateCell(0).SetCellValue("Ben");
row2.CreateCell(1).SetCellValue("20");
row2.CreateCell(2).SetCellValue("xyz");
IRow row3 = sheet1.CreateRow(2);
row3.CreateCell(0).SetCellValue("Jack");
row3.CreateCell(1).SetCellValue("25");
row3.CreateCell(2).SetCellValue("xyz");
IRow row4 = sheet1.CreateRow(3);
row4.CreateCell(0).SetCellValue("Mike");
row4.CreateCell(1).SetCellValue("45");
row4.CreateCell(2).SetCellValue("zyx");
FileStream sw = File.Create("work1_4.13.14.xlsx");
workbook.Write(sw);
sw.Close();
}
}
}
I didn’t used loop just to make it easy for beginner to understand.
.CreateRow(int index) creates new row at specified index.
row.CreateCell(int index) creates new cell at specified index in row.
cell.SetCellValue(string value) set value at row index.
Learn more:
Nuget: https://www.nuget.org/packages/NPOI
Code: https://github.com/nissl-lab/npoi
Examples: https://github.com/nissl-lab/npoi-examples
Method 6
just follow below steps:
//Start Excel and get Application object.
oXL = new Microsoft.Office.Interop.Excel.Application(); oXL.Visible = false;
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0