My ideal is : open some .csv files (5 or 6 or more) and add 2 new columns to all opened files and finally save it. Here is my code
OpenFileDialog fopen = new OpenFileDialog();
fopen.Multiselect = true;
fopen.Filter = "(All type)|*.*";
fopen.ShowDialog();
if (fopen.FileName != null)
{
Excel.Application app = new Excel.Application();
Excel.Workbook wb = app.Workbooks.Open(fopen.FileName);
Excel.Worksheet sheet = wb.Sheets[1];
Excel.Range range = sheet.UsedRange;
int column = range.Columns.Count;
int row = range.Rows.Count;
textBox1.Text = fopen.FileName;
//textBox2.Text = row.ToString();
//textBox3.Text = column.ToString();
range.Cells.set_Item(1, column + 1, "Mo_stMoC");
range.Cells.set_Item(1, column + 2, "Mo_stMoCCpl");
for (int i = 2; i <= row; i++)
{
range.Cells.set_Item(i, column + 1, "0");
range.Cells.set_Item(i, column + 2, "0");
}
wb.Save();
wb.Close();
app.Workbooks.Close();
app.Quit();
}
The problem is, when I open the files and it just adding 2 columns in the first .csv file.
I'm new to C#, so what am I doing wrong here?
you are opening multiple files, so loop through fopen.FileNames instead of just using fopen.FileName
foreach (String file in fopen.FileNames)
{
//do your thing
//edit
}
Additionally it is better to filter only csv files instead of all.
fopen.Filter = "CSV Files (*.csv)|*.csv";
Related
I want to export all my DataGridViews in one Excell document.
For every DataGridView there shoud be a own sheet in the Excell File.
But with my code i only recive the Error: System.Runtime.InteropServices.COMException: HRESULT: 0x800A03EC"
I think there is something wrong with my parameters.
private void exportToExcellButton_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileD = new SaveFileDialog();
string fileName = truckListBox.SelectedItem.ToString() + "__" + DateTime.Now.ToShortDateString();
saveFileD.InitialDirectory = #"C:/TML/";
saveFileD.FileName = fileName;
if (!Directory.Exists(#"C:/TML/"))
Directory.CreateDirectory(#"C:/TML/");
List<DataGridView> dataGridViews = getAllDataGridViews();
Microsoft.Office.Interop.Excel.Application app;
Microsoft.Office.Interop.Excel.Workbook book;
Microsoft.Office.Interop.Excel.Worksheet sheet;
app = new Excel.Application();
app.Visible = true;
book = app.Workbooks.Add(System.Reflection.Missing.Value);
foreach (var grid in dataGridViews)
{
int count = book.Worksheets.Count;
sheet = (Worksheet)book.Sheets.Add(Type.Missing, book.Worksheets[count], Type.Missing, Type.Missing);
sheet.Name = grid.Name.ToString().Remove(0, 13);
int cMin = 0, rMin = 0;
int c = cMin, r = rMin;
// Set Headers
foreach (DataGridViewColumn column in grid.Columns)
{
//Here appears the Error: System.Runtime.InteropServices.COMException: HRESULT: 0x800A03EC"
sheet.Cells[r, c] = column.HeaderText;
c++;
}
sheet.Range[sheet.Cells[r, cMin], sheet.Cells[r, c]].Font.Bold = true;
sheet.Range[sheet.Cells[r, cMin], sheet.Cells[r, c]].VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
// Set Rows
foreach (DataGridViewRow row in grid.Rows)
{
r++;
c = cMin;
// Set Cells
foreach (DataGridViewCell item in row.Cells)
{
sheet.Cells[r, c++] = item.Value;
}
}
}
book.Save();
book.Close();
app.Quit();
}
Spended allready days into it and cant get it work.
Thx for your Help!
EDIT: Fixed one error to get to the new one.
There are a few problems you may have with the posted code. Therefore, I will break them down.
For starters, it appears you are using a SaveFileDialog however I do not see where it is being used. The code sets the InitalDirectory and FileName, but it is never used. This is not that important as a dialog is not really needed, however the way the code is getting the file name is going to have some problems. The line of code…
string fileName = truckListBox.SelectedItem.ToString() + "__" + DateTime.Now.ToShortDateString();
is going to have problems if you try to save the file name because the string returned from DateTime.Now.ToShortDateString() is going to be in a format like “2019\11\26”… Obviously the “\” characters are going to be interpreted as a path (folder) and will most likely fail when the code tries to save the file. Creating a method that returns a string that uses some other character should be easy to fix this.
Next is the fact that Excel files are NOT zero based on their rows and columns. Therefore, setting the initial Excel row column variables (int c = 0, r = 0;) will fail on the first try. These values should be one (1).
Another problem is on the line…
book.Save();
Is most likely going to save the file to the users “Documents” folder using the file name of “Book1.xlsx.” When saving the file you need to supply the complete path and file name which as stated earlier does not appear to be used.
Lastly, anytime you use “COM” objects such as Excel apps, workbooks and worksheets, it is very important for the code to “RELEASE” the com objects your code creates before you exit the program. In the current posted code, it is highly likely that there are lingering “Excel” resources still running. Therefore, to avoid leaking resources, it is important for your code to release the com objects it creates.
In my example below the code to release the resources is in the finally clause of the try/catch/finally statement.
private void button1_Click(object sender, EventArgs e) {
//SaveFileDialog saveFileD = new SaveFileDialog();
//string fileName = truckListBox.SelectedItem.ToString() + "__" + DateTime.Now.ToShortDateString();
string fileName = #"C:\Users\John\Desktop\Grr\TestExcelFile" + "__" + DateTime.Now.Year + "_" + DateTime.Now.Month;
//saveFileD.InitialDirectory = #"C:\Users\John\Desktop\Grr\";
//saveFileD.FileName = fileName;
//if (!Directory.Exists(#"C:/TML/"))
// Directory.CreateDirectory(#"C:/TML/");
//List<DataGridView> dataGridViews = getAllDataGridViews();
List<DataGridView> dataGridViews = getGrids();
Microsoft.Office.Interop.Excel.Application app = null;
Microsoft.Office.Interop.Excel.Workbook book = null;
Microsoft.Office.Interop.Excel.Worksheet sheet = null;
app = new Microsoft.Office.Interop.Excel.Application();
app.Visible = true;
book = app.Workbooks.Add(System.Reflection.Missing.Value);
try {
foreach (var grid in dataGridViews) {
int count = book.Worksheets.Count;
//sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.Sheets.Add(Type.Missing, book.Worksheets[count], Type.Missing, Type.Missing);
sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.Worksheets.Add();
//sheet.Name = grid.Name.ToString().Remove(0, 13);
sheet.Name = grid.Name.ToString();
int cMin = 1, rMin = 1;
int c = cMin, r = rMin;
// Set Headers
foreach (DataGridViewColumn column in grid.Columns) {
//Here appears the Error: System.Runtime.InteropServices.COMException: HRESULT: 0x800A03EC"
sheet.Cells[r, c] = column.HeaderText;
c++;
}
sheet.Range[sheet.Cells[r, cMin], sheet.Cells[r, c]].Font.Bold = true;
sheet.Range[sheet.Cells[r, cMin], sheet.Cells[r, c]].VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;
// Set Rows
foreach (DataGridViewRow row in grid.Rows) {
r++;
c = cMin;
// Set Cells
foreach (DataGridViewCell item in row.Cells) {
sheet.Cells[r, c++] = item.Value;
}
}
}
book.SaveAs(fileName, Type.Missing, Type.Missing, Type.Missing);
book.Close();
app.Quit();
}
catch (Exception ex) {
MessageBox.Show("Error writing to excel: " + ex.Message);
}
finally {
if (sheet != null)
Marshal.ReleaseComObject(sheet);
if (book != null)
Marshal.ReleaseComObject(book);
if (app != null)
Marshal.ReleaseComObject(app);
}
}
Hope this helps.
Simply Make a method and pass DataGridView
using Excel = Microsoft.Office.Interop.Excel;
public void ete(DataGridView dgv)//ExportToExcel
{
// Creating a Excel object.
Excel._Application excel = new Excel.Application();
Excel._Workbook workbook = excel.Workbooks.Add(Type.Missing);
Excel._Worksheet worksheet = null;
excel.Columns.ColumnWidth = 20;
try
{
worksheet = workbook.ActiveSheet;
worksheet.Name = "ExportedFromDatGrid";
int cellRowIndex = 1;
int cellColumnIndex = 1;
//Loop through each row and read value from each column.
for (int i = -1; i < dgv.Rows.Count; i++)
{
for (int j = 0; j < dgv.Columns.Count; j++)
{
// Excel index starts from 1,1. As first Row would have the Column headers, adding a condition check.
if (cellRowIndex == 1)
{
worksheet.Cells[cellRowIndex, cellColumnIndex] = dgv.Columns[j].HeaderText;
}
else
{
worksheet.Cells[cellRowIndex, cellColumnIndex] = dgv.Rows[i].Cells[j].Value.ToString();
}
cellColumnIndex++;
}
cellColumnIndex = 1;
cellRowIndex++;
}
//Getting the location and file name of the excel to save from user.
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.Filter = "Excel files (*.xlsx)|*.xlsx|All files (*.*)|*.*";
saveDialog.FilterIndex = 2;
if (saveDialog.ShowDialog() == DialogResult.OK)
{
workbook.SaveAs(saveDialog.FileName.ToString());
MessageBox.Show("Export Successful");
}
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
excel.Quit();
workbook = null;
excel = null;
}
}
Now Call Method
ete(datagridview1);
I'm copying data from first sheet of different excel files to a single workbook. I already have tried it with different alternatives like npoi, spire.xls and Interop which works good, but it kills too much of my time. It would really be thankful if anyone can suggest me with a better one. Been through many forms on the web, but couldn't find.
FYI: Each of My files are more than 50 MB in size. A few being 10 MB or less.
This is one of which I have tried (Uses Spire.xls):
workbook = new Workbook();
//laod first file
workbook.LoadFromFile(names[0]);
//load the remaining files starting with second file
for (int i = 1; i < cnt; i++)
{
LoadFIle(names[i]);
//merge the loaded file immediately and than load next file
MergeData();
}
private void LoadFIle(string filePath)
{
//load other workbooks starting with 2nd workbbook
tempbook = new Workbook();
tempbook.LoadFromFile(filePath);
}
private void MergeData()
{
try
{
int c1 = workbook.ActiveSheet.LastRow, c2 = tempbook.Worksheets[0].LastRow;
//check if you have exceeded 1st sheet limit
if ((c1 + c2) <= 1048575)
{
//import the second workbook's worksheet into the first workbook using a datatable
//load 1st sheet of tempbook into sheet
Worksheet sheet = tempbook.Worksheets[0];
//copy data from sheet into a datatable
DataTable dataTable = sheet.ExportDataTable();
//load sheet1
Worksheet sheet1 = workbook.Worksheets[workbook.ActiveSheetIndex];
sheet1.InsertDataTable(dataTable, false, sheet1.LastRow + 1, 1);
}
else if ((c1 >= 1048575 && c2 >= 1048575) || c1 >= 1048575 || c2 >= 1048575 || (c1 + c2) >= 1048575)
{
workbook.Worksheets.AddCopy(tempbook.Worksheets[0]);
indx = workbook.ActiveSheet.Index;
workbook.ActiveSheetIndex = ++indx;
}
else
{
//import the second workbook's worksheet into the first workbook using a datatable
//load 1st sheet of tempbook into sheet
Worksheet sheet = tempbook.Worksheets[0];
//copy data from sheet into a datatable
DataTable dataTable = sheet.ExportDataTable();
//load sheet1
Worksheet sheet1 = workbook.Worksheets[workbook.ActiveSheetIndex];
sheet1.InsertDataTable(dataTable, false, sheet1.LastRow + 1, 1);
}
}
catch (IndexOutOfRangeException)
{
}
}
}
Well, this works good but as said takes a long time. Any suggestions are welcome. Thanks in advance.
Here is my (fastest I know of) implementation using Excel interop. Although I looked carefully to release all (must have missed one), 2 Excel instances remain in the processes list, they are closed after the program ends.
The key is to only have 2 Open Excel instances and to copy the data as a Block using Range.Value2.
//Helper function to cleanup
public void ReleaseObject(object obj)
{
if (obj != null && Marshal.IsComObject(obj))
{
Marshal.ReleaseComObject(obj);
}
}
public void CopyIntoOne(List<string> pSourceFiles, string pDestinationFile)
{
var sourceExcelApp = new Microsoft.Office.Interop.Excel.Application();
var destinationExcelApp = new Microsoft.Office.Interop.Excel.Application();
// TODO: Check if it exists
destinationExcelApp.Workbooks.Open(pDestinationFile);
// for debug
//destinationExcelApp.Visible = true;
//sourceExcelApp.Visible = true;
int i = 0;
var sheets = destinationExcelApp.ActiveWorkbook.Sheets;
var lastsheet = destinationExcelApp.ActiveWorkbook.Sheets[sheets.Count];
ReleaseObject(sheets);
foreach (var srcFile in pSourceFiles)
{
sourceExcelApp.Workbooks.Open(srcFile);
// get extends
var lastRow = sourceExcelApp.ActiveSheet.Cells.Find("*", System.Reflection.Missing.Value,
System.Reflection.Missing.Value, System.Reflection.Missing.Value, XlSearchOrder.xlByRows,
XlSearchDirection.xlPrevious, false, System.Reflection.Missing.Value, System.Reflection.Missing.Value);
var lastCol = sourceExcelApp.ActiveSheet.Cells.Find("*", System.Reflection.Missing.Value, System.Reflection.Missing.Value,
System.Reflection.Missing.Value, XlSearchOrder.xlByColumns, XlSearchDirection.xlPrevious, false,
System.Reflection.Missing.Value, System.Reflection.Missing.Value);
var startCell = (Range) sourceExcelApp.ActiveWorkbook.ActiveSheet.Cells[1, 1];
var endCell = (Range) sourceExcelApp.ActiveWorkbook.ActiveSheet.Cells[lastRow.Row, lastCol.Column];
var myRange = sourceExcelApp.ActiveWorkbook.ActiveSheet.Range[startCell, endCell];
// copy the values
var value = myRange.Value2;
// create sheet in new Workbook at the end
Worksheet newSheet = destinationExcelApp.ActiveWorkbook.Sheets.Add(After: lastsheet);
ReleaseObject(lastsheet);
lastsheet = newSheet;
//its even faster when adding it at the front
//Worksheet newSheet = destinationExcelApp.ActiveWorkbook.Sheets.Add();
// change that to a good name
newSheet.Name = ++i + "";
var dstStartCell = (Range) destinationExcelApp.ActiveWorkbook.ActiveSheet.Cells[1, 1];
var dstEndCell = (Range) destinationExcelApp.ActiveWorkbook.ActiveSheet.Cells[lastRow.Row, lastCol.Column];
var dstRange = destinationExcelApp.ActiveWorkbook.ActiveSheet.Range[dstStartCell, dstEndCell];
// this is the actual paste
dstRange.Value2 = value;
//cleanup
ReleaseObject(startCell);
ReleaseObject(endCell);
ReleaseObject(myRange);
ReleaseObject(value);// cannot hurt, but not necessary since its a simple array
ReleaseObject(dstStartCell);
ReleaseObject(dstEndCell);
ReleaseObject(dstRange);
ReleaseObject(newSheet);
ReleaseObject(lastRow);
ReleaseObject(lastCol);
sourceExcelApp.ActiveWorkbook.Close(false);
}
ReleaseObject(lastsheet);
sourceExcelApp.Quit();
ReleaseObject(sourceExcelApp);
destinationExcelApp.ActiveWorkbook.Save();
destinationExcelApp.Quit();
ReleaseObject(destinationExcelApp);
destinationExcelApp = null;
sourceExcelApp = null;
}
I have tested it on small excel files and are curious how it behaves with larger files.
I'm trying to write code in C# WinForms that allows a user to select a directory tree, and extract all of the table data from a word document into an excel file. Presently, the code compiles and you can select your directories, etc, but once it begins to iterate through the loop for each table it crashes.
The program successfully opens the first word file and writes the first excel file (table_1_whatever.xlsx) and saves it in the destination folder. However, on the second table in the same file I get this error on this line of code:
worksheet.Cells[row, col] = objExcelApp.WorksheetFunction.Clean(table.Cell(row, col).Range.Text);
System.Runtime.InteropServices.COMException: 'The requested member of the collection does not exist.'
I can't seem to figure out why it doesn't exist. Each time it goes through the foreach loop it should be creating a new worksheet, but it doesn't appear to be working. Any insight, examples, or suggestions are welcome!
Code:
private void WordRunButton_Click(object sender, EventArgs e)
{
var excelApp = new excel.Application();
excel.Workbooks workbooks = excelApp.Workbooks;
var wordApp = new word.Application();
word.Documents documents = wordApp.Documents;
wordApp.Visible = false;
excelApp.Visible = false;
string[] fileDirectories = Directory.GetFiles(WordSourceBox.Text, "*.doc*",
SearchOption.AllDirectories);
foreach (var item in fileDirectories)
{
word._Document document = documents.Open(item);
int tableCount = 1;
foreach (word.Table table in document.Tables)
{
if (table.Cell(1, 1).ToString() != "Doc Level")
{
string wordFile = item;
appendName = Path.GetFileNameWithoutExtension(wordFile) + "_Table_" + tableCount + ".xlsx";
var workbook = excelApp.Workbooks.Add(1);
excel._Worksheet worksheet = (excel.Worksheet)workbook.Sheets[1];
for (int row = 1; row <= table.Rows.Count; row++)
{
for (int col = 1; col <= table.Columns.Count; col++)
{
var cell = table.Cell(row, col);
var range = cell.Range;
var text = range.Text;
var cleaned = excelApp.WorksheetFunction.Clean(text);
worksheet.Cells[row, col] = cleaned;
}
}
workbook.SaveAs(Path.Combine(WordOutputBox.Text, Path.GetFileName(appendName)), excel.XlFileFormat.xlWorkbookDefault);
workbook.Close();
Marshal.ReleaseComObject(workbook);
}
else
{
WordOutputStreamBox.AppendText(String.Format("Table {0} ignored\n", tableCount));
}
WordOutputStreamBox.AppendText(appendName + "\n");
tableCount++;
}
document.Close();
Marshal.ReleaseComObject(document);
WordOutputStreamBox.AppendText(item + "\n");
}
WordOutputStreamBox.AppendText("\nAll files parsed");
excelApp.Application.Quit();
workbooks.Close();
excelApp.Quit();
WordOutputStreamBox.AppendText("\nExcel files closed");
Marshal.ReleaseComObject(workbooks);
Marshal.ReleaseComObject(excelApp);
WordOutputStreamBox.AppendText("\nExcel files released");
wordApp.Application.Quit();
wordApp.Quit();
WordOutputStreamBox.AppendText("\nWord files have been quit");
Marshal.ReleaseComObject(documents);
Marshal.ReleaseComObject(wordApp);
WordOutputStreamBox.AppendText("\nWord files have been released\n");
}
Edit 1:(Sorry for posting in the wrong place the first time!)
Ok, so the problem has been isolated...
The code logic of the code was fine, and the table was in fact there. The issue is that the second table of these files has a set of split cells in it, so, when it reaches the cell that contains it, the program crashes.
As a temp fix, I have just set it to ignore the table if the header == whatever. Does anyone know of a solution that actually allows to extract this data though?
My intention is opening 2 files (one .txt and one .csv), filter some text and finally write it into one column of single .csv file. Here is my code
OpenFileDialog fopen = new OpenFileDialog();
fopen.Multiselect = true;
fopen.Filter = "(All type)|*.*";
fopen.ShowDialog();
if (fopen.FileNames != null)
{
//try
//{
Excel.Application app = new Excel.Application();
Excel.Workbook wb = app.Workbooks.Add();
//Excel.Workbook wb = app.Workbooks.Open(fopen.FileName);
Excel.Worksheet sheet = wb.Sheets[1];
Excel.Range range = sheet.UsedRange;
int row = 1;
int col = 1;
foreach (string file in fopen.FileNames)
{
textBox1.Text = fopen.FileName;
string save = fopen.FileName;
string save1 = save.Split('.')[0];
string[] text = File.ReadAllLines(file);
for (int i = 0; i < lines; i++)
{
textBox2.AppendText(text[i] + "\n");
if (text[i].Contains("<LABEL-NAME>"))
{
if (text[i + 1].Contains("<MAP-LABEL-NAME>"))
{
string split = text[i].Split('<', '>')[2];
string split1 = text[i + 1].Split('<', '>')[2];
textBox3.AppendText(split + "\n");
textBox3.AppendText(split1 + "\n");
textBox4.Text = (split + ";" + split1);
string split2 = textBox4.Text;
range.Cells.set_Item(row, col, split2);
row++;
}
}
if (text[i].Contains("float32"))
{
string split = text[i].Split('f')[1];
textBox3.AppendText(split + "\n");
textBox4.Text = split;
range.Cells.set_Item(row, col, split);
row++;
}
textBox5.Text = row.ToString();
}
app.DisplayAlerts = false;
wb.SaveAs(save1 + ".csv", Excel.XlFileFormat.xlCSVWindows);
wb.Close(); //save as
app.Workbooks.Close();
app.Quit();
My problem is, the code has stop at
range.Cells.set_Item(row, col, split);
I try to pass the error but it has another problem is that just only the data filtered from the second file is written into the .csv file.
Can anyone tell me what am I doing wrong here?
Thank you.
Your fragment isn't complete but you appear to be opening Excel outside your foreach loop but closing it before the end, hence it doesn't exist if you open more than one file.
Excel.Application app = new Excel.Application();
.
.
foreach (string file in fopen.FileNames)
{
//file stuff
//} foreach loop should be closed here.
app.DisplayAlerts = false;
wb.SaveAs(save1 + ".csv", Excel.XlFileFormat.xlCSVWindows);
wb.Close(); //save as
app.Workbooks.Close();
app.Quit();
//} missing foreach closing bracket but implied
The rest of the fragment is missing but you need to close the foreach loop before closing Excel.
Say you have an excel file with a bunch of numbers and rows, about 100 rows.
I want to programatically write a column with a formula that adds the values of a bunch of fields together for each existing row.
So first of all, of course, I would create the Openfiledialog for the Excel file, find the path, open it up through OleDb. Got this down. Now say I have the following table:
[Friends | Money | Money Lost | Days passed | Solution]
Bilbo , 50 , 50 , 7 , *Formula here
Bilso , 80 , 50 , 7 , *Formula here
etc...
Problem is, I don't have an exact number for the rows so I'll have to enumerate whatever is found by the OleDb connection.
The formula would be something like =(B2-C2)*D2 but 2 is also wrong and it would have to be relative to whatever row it's on, ie: row 3 would be =(B3-C3)*D3. I'm not sure how to do this.
I found out writing directly to the cell also doesn't make the formula process the numbers outright.
=====
EDIT:
private Excel.Application Xls;
private Excel.Workbooks WBs;
private Excel.Workbook WB;
private Excel.Worksheet WS;
private Excel.Sheets SS;
Excel.Range cellsRange = null;
Excel.Range columnRange = null;
Excel.Range rowRange = null;
int numberOfColumns = 0;
int numberOfRows = 0;
private void btnColumn_Click(object sender, EventArgs e)
{
if (btnColumn.FlatStyle == FlatStyle.Flat)
btnColumn.FlatStyle = FlatStyle.Standard;
else
{
btnColumn.FlatStyle = FlatStyle.Flat;
}
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "Excel Files|*.xls;*.xlsx";
openFileDialog.ShowDialog();
string pather = openFileDialog.FileName;
if (pather == "" || pather == " " || pather == null)
{
return;
}
if (!string.IsNullOrEmpty(openFileDialog.FileName))
{
try
{
Xls = new Excel.Application();
WBs = Xls.Workbooks;
WB = WBs.Open(pather, 0, false, 5, "", "", true,
XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
SS = WB.Worksheets;
WS = SS.get_Item(1);
cellsRange = WS.Cells;
columnRange = cellsRange.Columns;
rowRange = cellsRange.Rows;
numberOfColumns = columnRange.Count;
numberOfRows = rowRange.Count;
int LastCell = numberOfColumns+1;
WS.Cells[1, LastCell] = "Tax Formula";
for (int i = 2; i < numberOfRows; i++)
{
//string niceFormula = "=SUM(L" + i + ",M" + i + ")*N"+ i ;
//WS.Cells[i, LastCell].Formula = niceFormula;
WS.Cells[i, LastCell].Value = (WS.Cells[i, 12] + WS.Cells[i, 13]) * WS.Cells[i, 14];
}
//==========================
WB.Save();
}
catch (Exception ex)
{
MessageBox.Show("Write Excel: " + ex.Message);
}
finally
{
GC.Collect();
GC.WaitForPendingFinalizers();
WB.Close();
Xls.Quit();
releaseObject(cellsRange);
releaseObject(columnRange);
releaseObject(rowRange);
releaseObject(SS);
releaseObject(WS);
releaseObject(WBs);
releaseObject(WB);
releaseObject(Xls);
}
MessageBox.Show("Finished Updating File", "Task complete");
}
}
Anyone know why this code is throwing the following error on write attempt?
HRESULT: 0x800A03EC
Repasted entire code for your convenience. It's still spitting out the HRESULT error.
Targeted item is 4 rows deep with 1 row of headers and about 16 columns wide.
Edit:
You may want to try this:
numberOfColumns = WS.UsedRange.Columns.CountLarge;
numberOfRows = WS.UsedRange.Rows.CountLarge;
Ugh, also change them to long instead of int if you use CountLarge instead of Count
Okay - I got this working finally - no clue why I was having so many issues.
For me, I apparently have to make the application visible or it doesn't work.
There may be another workaround - I pulled it from here: https://stackoverflow.com/a/17061714/1274820
This code worked for me finally:
Note that this is a console application (figured I would rule that out), but you should just be able to add the magic lines.
Application excelApp = new Application();
excelApp.SheetsInNewWorkbook = 1;
////////////////////////////////////////////
//Add these lines to make it work???
////////////////////////////////////////////
try {
excelApp.Visible = true;
}
catch {}
////////////////////////////////////////////
Workbook excelWB = excelApp.Workbooks.Open(#"C:\test.xls", Type.Missing, false);
_Worksheet excelWS = excelWB.Sheets[1];
Range cellsRange = excelWS.UsedRange;
long LastCell = cellsRange.Columns.CountLarge + 1;
long numberOfRows = cellsRange.Rows.CountLarge;
excelWS.Cells[1, LastCell] = "Tax Formula";
for (int i = 2; i <= numberOfRows; i++)
{
string niceFormula = "=SUM(L" + i + ",M" + i + ")*N" + i;
excelWS.Cells[i, LastCell].Formula = niceFormula;
}
excelWB.Close(true);
excelApp.Quit();
Before:
After:
How to fill a DataTable with an excel spreadsheet:
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//This function is absolute magic >.> - Fill DataTable with excel spreadsheet
//HDR=YES means "Spreadsheet has headers" Change to NO if not.
//name = "Log"; - This is the Sheet name to pull the data from
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//oconn takes an SQL like command (Select Everything from name sheet) using con
//HDR=YES means that our data has headers :)
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String constr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + copyToPath + ";Extended Properties='Excel 12.0 XML;HDR=YES;';";
OleDbConnection con = new OleDbConnection(constr);
OleDbCommand oconn = new OleDbCommand("Select * From [Log$]", con);
con.Open();
OleDbDataAdapter sda = new OleDbDataAdapter(oconn);
DataTable data = new DataTable();
sda.Fill(data);
con.Close();
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Why not use the R1C1 reference style? That way your formula does not need to be relative to the column.
For reference:
https://excelmate.wordpress.com/2013/04/22/excel-r1c1-reference-style-vs-a1/