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How to insert data to excel sheet using loop

i'm trying to insert some data to my excel sheet.
My main code returns true/false statement and i need to save that statements to my Registers.xls file.
How do i read and write data from same excel. (Sorry for poor english)
static void Main(string[] args)
{
Excel.Application xlApp;
Excel.Workbook xlWorkbook;
Excel.Worksheet xlWorksheet;
Excel.Range range;
xlApp = new Excel.Application();
xlWorkbook = xlApp.Workbooks.Open(#"E:\VScode\Registers.xls");
xlWorksheet = (Excel.Worksheet)xlWorkbook.Worksheets.get_Item(1);
range = xlWorksheet.UsedRange;
int cl = range.Rows.Count;
string result;
string strRegist;
for (int i = 1; i <= cl;i++)
{
strRegist = (string)(range.Cells[i,3] as Excel.Range).Value2;
result = Convert.ToString(Program.CheckRegister(strRegist));
//Insert result to my sheet
Console.WriteLine(result);
}
xlWorkbook.Close(true, null, null);
xlApp.Quit();
Marshal.ReleaseComObject(xlWorksheet);
Marshal.ReleaseComObject(xlWorkbook);
Marshal.ReleaseComObject(xlApp);
Console.WriteLine();
Console.ReadLine();
}

You could add your data into a datatable and then convert that to an excelsheet and adding that sheet into w/e workbook you want.
using OfficeOpenXml;
using System.Data;
using System.IO;
void SaveTableAsExcelSheet(DataTable dt, string filePath)
{
var fi = new FileInfo(filePath);
using (ExcelPackage pck = new ExcelPackage(fi))
{
ExcelWorksheet ws = pck.Workbook.Worksheets.Add(dt.TableName);
ws.Cells["A1"].LoadFromDataTable(dt, true);
pck.Save();
}
}

How to read cell values from existing excel file

I want to read the each cell value in excel file, But i am not able to get the cell values even after trying different examples in NET. I am not getting result with the following code, can any one get back on this. I am using .net framework 2.0
string filePath = "F:/BulkTest.xlsx";
Microsoft.Office.Interop.Excel.Application ExcelApp = new Microsoft.Office.Interop.Excel.Application();
ExcelApp.Visible = true;
Microsoft.Office.Interop.Excel.Workbook wb = ExcelApp.Workbooks.Open(filePath, Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value,Missing.Value);
Microsoft.Office.Interop.Excel.Worksheet sh = (Microsoft.Office.Interop.Excel.Worksheet)wb.Sheets["Sheet1"];
Range excelRange = sh.UsedRange;
for (int i=2; i<= excelRange.Count + 1 ; i++)
{
string values = sh.Cells[i,2].ToString();
}

Till now i am trying to take cell values directly to variables, now i will try to take cell values to an array using Range. Thanks!!!! – Teja Varma 13 mins ago
No. I didn't even mean that :) As I mentioned in the comment that you can store the entire range in an array. That doesn't mean that you need to loop though each cell to store it in an array. You can directly assign the values of the range to the array. See this example.
xlRng = xlWorkSheet.get_Range("A1", "A20");
Object arr = xlRng.Value;
foreach (object s in (Array)arr)
{
MessageBox.Show(s.ToString());
}

The correct answer would be to use:
Sheet.Cells[row,col].Value.ToString();

C# code
Tested OK
string s = xlSheet.UsedRange.Cells[1, 7].Value.ToString();
//or
string d = xlSheet.UsedRange.Cells[1, "G"].Value.ToString();
Full Code
Excel.Application xlApp = new Excel.Application();
Excel.Workbook xlBook;
Excel.Worksheet xlSheet;
string Path = System.IO.Path.GetDirectoryName(Application.ExecutablePath);
xlBook = xlApp.Workbooks.Open(Path + "\\myfile.xlsx");
xlApp.Visible = true;
xlSheet = xlBook.ActiveSheet;
string s = xlSheet.UsedRange.Cells[1, 7].Value.ToString();
string d = xlSheet.UsedRange.Cells[1, "G"].Value.ToString();
xlBook.Close();
xlApp.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(xlSheet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(xlBook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);

Copying A Formula--And applying it to a new cell range

So here's what I am going through. I am using the Excel dll with c# in order to go inside a big and nasty excel sheet so that others don't have to.
We have a formula in one cell that is rather large and we don't want to copy it to every row because of this. This formula uses multiple values on the row that it is placed on. If it is on row 1, it uses lots of cells from that row.
When one copies this formula normally in excel, the new ranges of the cells are modified to reflect the new starting position.
The problem is that when I copy the formula like this, it still gives me all of the values that have to do with the first row instead of the row where I pasted it.....Here is my code:
sheet.Cells[77][row].Formula = sheet.Cells[77][1].Formula;
Can somebody let me know how to make the formula actually apply to the new row instead of row 1?

This will probably work, as it works from VBA... in most cases.
sheet.Cells[77][row].FormulaR1C1 = sheet.Cells[77][1].FormulaR1C1;
This would work because FormulaR1C1(not a very informative link) uses R1C1 notation which describes the referenced cells location in relation to the current cell instead of saying which cells to use. This means the actual references are dependent on the cell with the formula. When you just use Formula, you're copying the string of the Formula exactly including the hard coded cell references.

You could use Application.ConvertFormula
So, let's say my Cell = Cells77 has a formula that says =Sum(B77,C77) (Cells from the same row).
if want to copy it to a cell right below it, you would do something like:
string formula = Sheet1.Cells[77][2].Formula;
Sheet1.Cells[77][2].Formula = app.ConvertFormula(formula, XlReferenceStyle.xlA1, XlReferenceStyle.xlR1C1, XlReferenceType.xlRelative, Sheet1.Cells[77][3]);
Full console app that works (You need to modify cells though).
static void Main(string[] args)
{
var app = new Microsoft.Office.Interop.Excel.Application();
var workbook = app.Workbooks.Open(#"C:\Users\user\Desktop\Book1.xlsx");
Microsoft.Office.Interop.Excel.Worksheet Sheet1 = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item("Sheet1");
string formula = Sheet1.Cells[5][3].Formula;
Sheet1.Cells[5][4].Formula = app.ConvertFormula(formula, XlReferenceStyle.xlA1, XlReferenceStyle.xlR1C1, XlReferenceType.xlRelative, Sheet1.Cells[5][3]);
workbook.SaveAs(#"C:\Users\user\desktop\test.xlsx");
workbook.Close();
}
You can modify third and forth parameter of ConvertFormula method to your liking. Read more about the method here: ConvertFormula.
If you want to stretch formula accross multiple rows, you can try to use range.AutoFill()

Hi guys m posting this because this code is used to copy the formula behind a cell in Excel:
public void copy_Formula_behind_cell()
{
Excel.Application xlapp;
Excel.Workbook xlworkbook;
Excel.Worksheet xlworksheet;
Excel.Range xlrng;
object misValue = System.Reflection.Missing.Value;
xlapp = new Excel.Application();
xlworkbook =xlapp.Workbooks.Open("YOUR_FILE", 0, true, 5, "",
"",true,Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t",
false,
false, 0, true, 1, 0);
xlworksheet = (Excel.Worksheet)xlworkbook.Worksheets.get_Item(1);
string sp = xlworksheet.Cells[3,2].Formula;//It will Select Formula using Fromula method//
xlworksheet.Cells[8,2].Formula =
xlapp.ConvertFormula(sp,XlReferenceStyle.xlA1,
XlReferenceStyle.xlR1C1, XlReferenceType.xlAbsolute,
xlworksheet.Cells[8][2]);
//This is used to Copy the exact formula to where you want//
xlapp.Visible = true;
xlworkbook.Close(true, misValue, misValue);
xlapp.Quit();
releaseObject(xlworksheet);
releaseObject(xlworkbook);
releaseObject(xlapp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Unable to release the Object " + ex.ToString());
}
finally
{
GC.Collect();
}
}

I am posting this code for range the excel formulas using c# code and Microsoft.Office.Interop.Excel Library:
class Program
{
static void Main(string[] args)
{
Program p = new Program();
p.Excel();
}
public void Excel()
{
Application xlApp = new Application();
Workbook xlWorkBook;
Worksheet xlWorkSheet;
object misValue = Missing.Value;
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Worksheet)xlWorkBook.Worksheets.get_Item(1);
for (int r = 1; r < 5; r++) //r stands for ExcelRow and c for ExcelColumn
{
// Its a my sample example: Excel row and column start positions for writing Row=1 and Col=1
for (int c = 1; c < 3; c++)
{
if (c == 2)
{
if (r == 1)
{
xlWorkSheet.Cells[r, c].Formula = "=SUM(A1+200)";
}
continue;
}
xlWorkSheet.Cells[r, c] = r;
}
}
Range rng = xlWorkSheet.get_Range("B1");
// This is the main code we can range our excel sheet formulas
rng.AutoFill(xlWorkSheet.get_Range("B1", "B4"), XlAutoFillType.xlLinearTrend);
xlWorkBook.Worksheets[1].Name = "MySheetData";//Renaming the Sheet1 to MySheet
xlWorkBook.SaveAs(#"E:\test.xlsx");
xlWorkBook.Close();
Marshal.ReleaseComObject(xlWorkSheet);
Marshal.ReleaseComObject(xlWorkBook);
Marshal.ReleaseComObject(xlApp);
}
}

Open, Modify, SaveAs an Excel Workbook in the background (Winforms, C#)

in my app, I've saved a copy of a blank excel file form as a resources, I need to load this file, modify its both worksheets, save it in a new location with a new name.
user should not see that process.
I'm using C# 2010 with a SQL server, from which I'm gonna load my data and put it in the excel form.
Thank You For Your Time.

Use the Microsoft Interop Assemblies that can be found in .NET or COM (Microsoft.Office.Interop.Excel)
Then load all the required cells into a List and modify the data.
Something like this (code below):
string path = #"C:\temp\test.xls";
ApplicationClass excelApllication = null;
Workbook excelWorkBook = null;
Worksheet excelWorkSheet = null;
excelApllication = new ApplicationClass();
System.Threading.Thread.Sleep(2000);
excelWorkBook = excelApllication.Workbooks.Add();
excelWorkSheet = (Worksheet)excelWorkBook.Worksheets.get_Item(1);
// Attention: 1 indexed cells, [Row, Col]
excelWorkSheet.Cells[1, 1] = "Column A, Row 1";
excelWorkSheet.Cells[2, 5] = "Column E, Row 2";
excelWorkSheet.Cells[3, 3] = "Column C, Row 3";
excelWorkBook.SaveAs(path, XlFileFormat.xlWorkbookNormal);
excelWorkBook.Close();
excelApllication.Quit();
Marshal.FinalReleaseComObject(excelWorkSheet);
Marshal.FinalReleaseComObject(excelWorkBook);
Marshal.FinalReleaseComObject(excelApllication);
excelApllication = null;
excelWorkSheet = null;
//opens the created and saved Excel file
Process.Start(path);
That should happen inside a Thread, because you don't want a user to notice that task.
http://msdn.microsoft.com/en-us/library/aa645740%28v=vs.71%29.aspx
(Threading Tutorial)

I would try to avoid automating Excel if at all possible and use the OpenXML SDK (or a library wrapping the OpenXML SDK) for this task.
Here is an article that could help you get started.

I think you wanted to do this... at least worked for me. :)
private void btnExcel_Click(object sender, EventArgs e)
{
string newDirectoryPath = ValidateDirectory();
string newFilePath = Path.Combine(newDirectoryPath, "new.xls");
//brand new temporary file
string tempPath = System.IO.Path.GetTempFileName();
//to manage de temp file life
FileInfo tempFile = new FileInfo(tempPath);
//copy the structure and data of the template .xls
System.IO.File.WriteAllBytes(tempPath,Properties.Resources.SomeResource);
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.Application();
xlWorkBook = xlApp.Workbooks.Open(tempPath, 0, true, 5, "", "", true, Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
//WorkTheExcelFile();
tempFile.Delete();
xlWorkBook.SaveAs(newFilePath);
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
Process.Start(newFilePath + ".xlsx");
}

How do I search for specific text in an Excel worksheet and get the address that the text is occupying using C#?

I am writing a program that will allow me to open excel spreadsheets and get some specific information off of them. Each sheet contains the same information that I need, but the information is not always in the same location.
I am trying to find a way to search for specific text in an Excel sheet and have the address of the cell that text is in.
For example:
If I was looking for the text "apples", the function will find the cell that contains apples and return its address (i.e., A5).
For accessing the Excel spreadsheet I am using Excel = Microsoft.Office.Interop.Excel.
I have been looking all weekend for an efficient way to to do this and have been horribly unsuccessful so far. Any help I can get would be greatly appreciated.
Edit:
This is part of a much larger project, but for this particular function, I have the ability to open and close the Excel file. I have yet to start writing the search function yet, because to be perfectly honest, I am not exactly sure on even how to go about doing this. But here is what I have at this point.
public string searchExcel(string findThis)
{
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.WorkSheet xlWorkSheet;
object misvalue;
//This part will open the Excel document.
misValue = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Open("C:\\temp2\\excelDocument.xlsm",
0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows,
"\t", false, false, 0, true, 1, 0);
//Search and get address of cell
//This part will close the Excel document
xlWorkBook.Close(true, misValue, misvalue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
xlWorkSheet = null;
xlWorkBook = null;
xlApp = null;
}
private void releaseObject(object obj)
{
try
{
System.Runtime.Interopservices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch(Exception e)
{
obj = null;
MessageBox.Show("Unable to release the object " + e.ToString());
}
finally
{
GC.Collect();
}
}

I think something like this should do what you want:
var app = (Excel.Application)Marshal.GetActiveObject("Excel.Application");
var wb = app.ActiveWorkbook;
var ws = wb.Worksheets[1] as Excel.Worksheet;
var cells = ws.Cells;
var match = cells.Find("apples", LookAt:=Excel.XlLookAt.xlPart) as Excel.Range;
var matchAdd = match != null ? match.Address : null;
This will search in the first Worksheet of the current active workbook of a current Excel session.
Adjusting to fit your code:
xlWorksheet = xlWorkBook.Worksheets[1] as Excel.Worksheet;
Excel.Range cells = ws.Cells;
Excel.Range match = cells.Find("apples", LookAt:=Excel.XlLookAt.xlPart) as Excel.Range;
string matchAdd = match != null ? match.Address : null;
if (match != null) releaseObject(match);
releaseObject(cells);
One thing, is this assumes .Net 4.0 as I use missing arguments for the find call. If you are using a previous version you will need to pass in misValue for any parameter not used.