I have just started working with EPPlus. i have data table which has some numeric data and formula. when i load data table by EPPlus and save to excel then formula not evaluated i found when i open the same excel file. formula lies in excel cell as string like SUM(A3:B3)
To evaluate formulate i have tried many options of EPPLUS and those are listed here
pack.Workbook.Worksheets["Test"].Calculate();
pack.Workbook.Worksheets["Test"].Cells["A3"].Calculate();
pack.Workbook.Worksheets["Test"].Cells["B3"].Calculate();
ws.Calculate();
Here i am referring my full sample code where formula not working. please have a look and tell me what i need to add in my code to evaluate formula.
private void button1_Click(object sender, EventArgs e)
{
DataTable dt = GetDataTable();
string path = #"d:\EPPLUS_DT_Excel.xlsx";
Stream stream = File.Create(path);
using (ExcelPackage pack = new ExcelPackage())
{
ExcelWorksheet ws = pack.Workbook.Worksheets.Add("Test");
ws.Cells["A1"].LoadFromDataTable(dt, false);
//pack.Workbook.Worksheets["Test"].Calculate();
//pack.Workbook.Worksheets["Test"].Cells["A3"].Calculate();
//pack.Workbook.Worksheets["Test"].Cells["B3"].Calculate();
ws.Calculate();
pack.SaveAs(stream);
stream.Close();
MessageBox.Show("Done");
}
}
public DataTable GetDataTable()
{
string strSum = "", strColName, strImmediateOneUp = "", strImmediateTwoUp = "";
int startsum = 0;
int currow = 0;
bool firstTimeSum = true;
int NumRows = 3;
int NumColumns = 2;
DataTable dt = new DataTable();
for (int col = 0; col < NumColumns; col++)
{
strColName = GenerateColumnText(col);
DataColumn datacol = new DataColumn(strColName, typeof(object));
dt.Columns.Add(datacol);
}
for (int row = 0; row < NumRows; row++)
{
dt.Rows.Add();
for (int col = 0; col < NumColumns; col++)
{
if (row < 2)
{
dt.Rows[row][col] = Convert.ToInt32(new Random().Next(1, NumRows));
}
else
{
if (firstTimeSum)
{
if (row - currow == 2)
{
currow = row;
startsum = 0;
firstTimeSum = false;
}
else
{
startsum = 1;
}
}
else
{
if (row - currow == 3)
{
currow = row;
startsum = 0;
}
}
if (startsum == 0)
{
strColName = GenerateColumnText(col);
strImmediateOneUp = strColName + ((row + 1) - 1).ToString();
strImmediateTwoUp = strColName + ((row + 1) - 2).ToString();
strSum = string.Format("+SUM({0}:{1})", strImmediateTwoUp, strImmediateOneUp);
dt.Rows[row][col] = strSum;
}
else
{
dt.Rows[row][col] = Convert.ToInt32(new Random().Next(1, NumRows));
}
}
}
startsum = 1;
}
return dt;
}
private string GenerateColumnText(int num)
{
string str = "";
char achar;
int mod;
while (true)
{
mod = (num % 26) + 65;
num = (int)(num / 26);
achar = (char)mod;
str = achar + str;
if (num > 0) num--;
else if (num == 0) break;
}
return str;
}
When adding a formula to a cell you use the Formula property. When you load a range from a DataTable using LoadFromDataTable it has no way of knowing that some of the values are meant to be interpreted as formulas.
You can use LoadDataTable to populate the cells on which the formulas will operate, but for the formulas you'll need to set the Formula property.
Related
My Excel has column data like
When I get the data in my asp.net api using below code, I get the data 01-1月-2021 instead of 2021-01-01 then I get the error in line entity.startTime = Convert.ToDateTime(row[0].ToString().Trim());
for (int j = 0; j < HttpContext.Current.Request.Files.Count; j++)
{
string fileName = HttpContext.Current.Request.Files[j].FileName;
if (fileName.Contains(".xlsx") || fileName.Contains(".xls"))
{
dataset = ExcelHelper.ExcelStreamToDataSet(HttpContext.Current.Request.Files[j].InputStream, HttpContext.Current.Request.Files[j].FileName);
bool isFileFind = false;
List<ExcelRowErrorInfoAssetInfo> fileErrorAllList = new List<ExcelRowErrorInfoAssetInfo>();
for (int i = 0; i < dataset.Tables.Count; i++)
{
DataTable table = dataset.Tables[i];
string sheetName = table.TableName;
#region
for (int r = 0; r < table.Rows.Count; r++)
{
DataRow row = table.Rows[r];
int cnt = row.ItemArray.ToList().Where(a => string.IsNullOrEmpty(a.ToString())).Count();
if (cnt < row.ItemArray.Count())
{
if (sheetName == "基本信息")
{
AssetsInfoMap entity = new AssetsInfoMap();
//startTime is type of DateTime
entity.startTime = Convert.ToDateTime(row[0].ToString().Trim());
entity.endTime = Convert.ToDateTime(row[1].ToString().Trim());
}
}
}
#endregion
}
public static DataSet ExcelStreamToDataSet(Stream stream, string fileName)
{
DataSet dataset = new DataSet();
int startRow = 0;
try
{
IWorkbook workbook = null;
if (fileName.IndexOf(".xlsx") > 0)
workbook = new XSSFWorkbook(stream);
else if (fileName.IndexOf(".xls") > 0)
workbook = new HSSFWorkbook(stream);
int sheetCount=workbook.NumberOfSheets;
for (int m = 0; m < sheetCount-1; m++)
{
DataTable data = new DataTable();
ISheet sheet = workbook.GetSheetAt(m);
data.TableName= sheet.SheetName;
if (sheet != null)
{
IRow firstRow = sheet.GetRow(0);
int cellCount = firstRow.LastCellNum;
for (int k = firstRow.FirstCellNum; k < cellCount; ++k)
{
ICell cell = firstRow.GetCell(k);
if (cell != null)
{
string cellValue = cell.StringCellValue;
if (cellValue != null)
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
}
}
startRow = sheet.FirstRowNum + 1;
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null) continue;
DataRow dataRow = data.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{
if (row.GetCell(j) != null)
dataRow[j] = row.GetCell(j).ToString();
}
data.Rows.Add(dataRow);
}
}
dataset.Tables.Add(data);
}
}
catch (Exception ex)
{
Console.WriteLine("Exception: " + ex.Message);
}
return dataset;
}
}
So how to get correct data to assign it to my model, do you have any ideas based on my above code?
ICell defines a property .DateCellValue, so you should use this when mapping your date values:
ICell cell = row.GetCell(j);
if (cell.CellType == CellType.Numeric && DateUtil.IsCellDateFormatted(cell))
{
dataRow[j] = cell.DateCellValue;
}
This will now store your value as a DateTime rather than as a string. We now need to do away with your DateTime->string->DateTime conversion:
entity.startTime = (DateTime)row[0];
I am trying to get a total number of rows being used in excel using Epplus but I am unable to get an exact count and the count also includes null I need an only exact range of used cells.
these lines of code I am using
FileInfo fileinfo = new FileInfo(fileName);
ExcelPackage p = new ExcelPackage(fileinfo);
ExcelWorksheet w = p.Workbook.Worksheets[1];
int Rmax = w.Dimension.End.Row;
int Cmax = w.Dimension.End.Column;
Console.WriteLine(Rmax);
Console.WriteLine(Cmax);
You can get rows and columns from these lines
using (ExcelPackage package = new ExcelPackage(stream))
{
ExcelWorksheet worksheet = package.Workbook.Worksheets[1];
int rowCount = worksheet.Dimension.Rows;
int colCount = worksheet.Dimension.Columns;
}
int count = Rmax * Cmax;
int firstCellValue = 0;
int lastCellValue = 0;
for (int row = 1; row <= Rmax; row++) {
for (int column = 1; column <= Cmax; column++) {
if (string.IsNullOrEmpty(worksheet.Cells[row, column].GetValue<String>())) {
count--;
}
}
}
UPDATE
int rowCount = Rmax;
int count = Rmax * Cmax;
string firstCellValue = string.Empty;
string lastCellValue = string.Empty;
for (int row = 1; row <= Rmax; row++) {
bool foundValue = false;
int leftIndex = 1;
int rightIndex = Cmax;
for (int column = 1; column <= Cmax; column++) {
if (leftIndex == rightIndex) {
if (!foundValue) {
rowCount--;
break;
}
}
if (!string.IsNullOrEmpty(worksheet.Cells[row, column].GetValue < String > ())) {
foundValue = true;
firstCellValue = worksheet.Cells[row, column].ToString();
leftIndex++;
}
if (!string.IsNullOrEmpty(worksheet.Cells[row, rightIndex].GetValue < String > ())) {
foundValue = true;
lastCellValue = worksheet.Cells[row, rightIndex].ToString();
rightIndex--;
}
}
}
Console.WriteLine("firstCellValue" + firstCellValue);
Console.WriteLine("lastCellValue" + lastCellValue);
Console.WriteLine("Number of cells" + rowCount);
I have populated my data table with random values and formula like =SUM(A1:A2)
when there is 150 columns and 4000 rows in datatable then ReoGrid taking approx 20 minute to be populated.
when i am populating ReoGrid without formula then it takes few second to populate ReoGrid but the moment many SUM formulas are being assigned to cell dynamically then ReoGrid take long time to populated.
Here i am sharing my code. so my request please guys see my code logic and tell me is there any flaw when assigning formula to many cell of ReoGrid.
please tell me how could i simplify the logic to populate grid with formula. Is there way to increase the performance of my code with formula as a result ReoGrid can be populated with in few sec or few minute.
Looking for suggestion and guide line. ReoGrid is free component for winform application https://reogrid.net/.
Here is my code
private void btnBindTable_Click(object sender, EventArgs e)
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
string strSum = "", strColName, strImmediateOneUp = "", strImmediateTwoUp = "";
int startsum = 0;
int currow = 0;
bool firstTimeSum = true;
int NumRows = 4000;
int NumColumns = 150;
var sheet = reoGrd.CurrentWorksheet;
sheet.Resize(NumRows, NumColumns); // resize
DataTable dt = new DataTable();
for (int col = 0; col < NumColumns; col++)
{
strColName = GenerateColumnText(col);
DataColumn datacol = new DataColumn(strColName, typeof(string));
dt.Columns.Add(datacol);
}
for (int row = 0; row < NumRows; row++)
{
dt.Rows.Add();
for (int col = 0; col < NumColumns; col++)
{
if (row < 2)
{
dt.Rows[row][col] = new Random().Next(1, NumRows).ToString("D2");
}
else
{
if (firstTimeSum)
{
if (row - currow == 2)
{
currow = row;
startsum = 0;
firstTimeSum = false;
}
else
{
startsum = 1;
}
}
else
{
if (row - currow == 3)
{
currow = row;
startsum = 0;
}
}
if (startsum == 0)
{
strColName = GenerateColumnText(col);
strImmediateOneUp = strColName + ((row + 1) - 1).ToString();
strImmediateTwoUp = strColName + ((row + 1) - 2).ToString();
dt.Rows[row][col] = strSum;
string cellname = GenerateColumnText(col) + (row + 1).ToString();
var cell = sheet.Cells[cellname];
cell.Style.BackColor = Color.LightGoldenrodYellow;
}
else
{
dt.Rows[row][col] = new Random().Next(1, NumRows).ToString("D2");
}
}
}
startsum = 1;
}
sheet["A1"] = dt;
stopwatch.Stop();
TimeSpan timeSpan = stopwatch.Elapsed;
MessageBox.Show(string.Format("Time elapsed: {0}h {1}m {2}s {3}ms", timeSpan.Hours, timeSpan.Minutes, timeSpan.Seconds, timeSpan.Milliseconds));
}
I have a set of codes to export grid view data to excel using EPPLUS. I am able to export the data to EPPLUS. But how do I export the colour of the font to excel as well? Can I set the dynamic coding for the font colour if ..... colour = green if ..... colour = red?
Thus I will need column4 to be coloured as well according to the value I set.
The below codes is how I set dynamically for gridview:
if (e.Row.RowType == DataControlRowType.DataRow)
{
TableCell cell = e.Row.Cells[16];
int Num = int.Parse(cell.Text);
if (Num >= 1&& Num <= 11)
{
cell.ForeColor = Color.Green;
}
if (Num >= 12&& Num <= 39)
{
cell.ForeColor = Color.Orange;
}
..........
}
The codes for my export:
protected void EXPORT_BUTTON_Click(object sender, EventArgs e)
{
ExcelPackage package = new ExcelPackage();
ExcelWorksheet Grid = package.Workbook.Worksheets.Add("ORSA ASSESSMENTS");
DataTable Gridview1 = new DataTable();
for (int i = 0; i < Gridview1.Columns.Count; i++)
{
Gridview1.Columns.Add("column" + i.ToString());
}
foreach (GridViewRow row in Gridview1.Rows)
{
DataRow dr = Gridview1.NewRow();
for (int j = 0; j < Gridview1.Columns.Count; j++)
{
row.Cells[j].Text = row.Cells[j].Text.Replace(" ", " ");
dr["column" + j.ToString()] = row.Cells[j].Text;
}
Gridview1.Rows.Add(dr);
}
Grid.Cells["A1"].LoadFromDataTable(Gridview1, true);
using (ExcelRange rng = Grid.Cells["A1:Z1"])
{
rng.Style.Font.Bold = true;
}
Grid.Cells[ORSA.Dimension.Address].AutoFitColumns();
var FolderPath = ServerName + DirectoryLocation + DirectoryFolder + ExportsFolder;
var filename = ExcelName + #"_" + ".xlsx";
var filepath = new FileInfo(Path.Combine(FolderPath, filename));
Response.Clear();
package.SaveAs(filepath);
Response.AddHeader("content-disposition", "attachment; filename=" + filename + ";");
Response.Charset = "";
Response.ContentType = "application/vnd.xlsx";
Response.TransmitFile(filepath.FullName);
Response.End();
}
Thus how can I do in my export codes so that I can export or set the forecolour dynamically upon exporting?
thanks
After this line
Grid.Cells["A1"].LoadFromDataTable(Gridview1, true);
Do a looping to loop the count of your DataTable
Example
protected void Page_Load(object sender, EventArgs e)
{
// Check
if (!IsPostBack)
{
DataTable dt = new DataTable();
// Create Column
for(int i = 0; i < 5; i++)
dt.Columns.Add("column" + i, typeof(int));
for (int i = 0; i < 10; i++)
dt.Rows.Add(i, i+1, i+2, i+3, i+4);
GenerateExcel(dt);
}
}
private void GenerateExcel(DataTable dt)
{
using (ExcelPackage pkg = new ExcelPackage())
{
ExcelWorksheet ws = pkg.Workbook.Worksheets.Add("Sheet1");
int num = 0;
string value = string.Empty;
ws.Cells[1, 1].LoadFromDataTable(dt, true);
// Get Your DataTable Count
int count = dt.Rows.Count;
int countCol = dt.Columns.Count;
bool isHeader = true;
for (int i = 0; i < count; i++ )
{
// Set Border
for (int j = 1; j <= countCol; j++)
{
// Set Border For Header. Run once only
if (isHeader) ws.Cells[1, j].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thin, System.Drawing.Color.Black);
ws.Cells[2 + i, j].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thin, System.Drawing.Color.Black);
}
// Set to false
isHeader = false;
// Cells 2 + i == Rows, Wondering start with 2 because your 1st rows is Title so 2 is the value
// Cells 2 == Column make sure your column is fix
value = ws.Cells[2 + i, 2].Value + ""; // You can use .ToString() if u sure is not null
// Parse
int.TryParse(value, out num);
// Check
if (num >= 1 && num <= 11)
ws.Cells[2 + i, 2].Style.Font.Color.SetColor(System.Drawing.Color.Green);
else if (num >= 12 && num <= 39)
ws.Cells[2 + i, 2].Style.Font.Color.SetColor(System.Drawing.Color.Orange);
}
pkg.SaveAs(new FileInfo("C:\\Test.xlsx"));
}
}
I have a data in data table with say 4 columns.Out of those 10 columns first column contains the date.The data in the table is in the form :
I/p
"15/12/2010",username,24,No
"16/12/2010",username,24,No
"17/12/2010",username,24,No
"18/12/2010",username,24,No
"19/12/2010",username,24,No
"20/12/2010",username,25,No
"21/12/2010",username,24,yes
"22/12/2010",username,24,No
"23/12/2010",username,24,No
"24/12/2010",username,24,No
"25/12/2010",username,24,No
"26/12/2010",Prakhar,24,No
"27/12/2010",username,24,No
"28/12/2010",username,24,No
We have to bind the o/p with the repeater.
For aforemenioned i/p the output should be :
O/P
"15/12/2010 - 20/12/2010",username,24,No
"21/12/2010 - 21/12/2010",username,24,Yes
"22/12/2010 - 25/12/2010",username,24,no
"26/12/2010 - 26/12/2010",username,24,no
"27/12/2010 - 28/12/2010",username,24,no
I.e. we are clubbing all the dates whose corresponsing column values are matching.
We have to write a c# code for it.
First I have created a new Datatable for our final result:
DataTable dtInventoryTable = new dtInventoryTable();
dtInventoryTable.Columns.Add("RateDate", typeof(string));
dtInventoryTable.Columns.Add("RatePlanId", typeof(string));
dtInventoryTable.Columns.Add("RoomTypeId", typeof(string));
private DataTable DisplayInventoryDetails(DataTable dtInventoryDetail)
{
for (int i = 0; i < dtInventoryDetail.Rows.Count; i++)
{
String[] row = new String[dtInventoryDetail.Columns.Count];
String[] row1 = new String[dtInventoryDetail.Columns.Count];
string str=string.Empty;
int h=0;
str = dtInventoryDetail.Rows[i][0].ToString() + " - " +dtInventoryDetail.Rows[i]0].ToString();
for (int j = i+1;j< dtInventoryDetail.Rows.Count; j++)
{
for (int x = 1; x < dtInventoryDetail.Columns.Count; x++)
{
row[x] = dtInventoryDetail.Rows[i][x].ToString();
}
for (int y = 1; y < dtInventoryDetail.Columns.Count; y++)
{
row1[y] = dtInventoryDetail.Rows[j][y].ToString();
}
bool result = ArraysEqual(row, row1);
if (!result)
{
dtInventoryTable = GetRoomRateTable(row, str);
i = j-1;
h = j;
break;
}
else
str= dtInventoryDetail.Rows[i][0].ToString() + " - " + dtInventoryDetail.Rows[j][0].ToString();
h = j;
}
}
if (h >= dtInventoryDetail.Rows.Count-1)
{
dtInventoryTable = GetRoomRateTable(row, str);
break;
}
}
return dtInventoryTable;
}
private DataTable GetRoomRateTable(String[] row,string str)
{
row[0] = str;
dtInventoryTable.LoadDataRow(row, true);
return dtInventoryTable;
}