I have a list of invoices that and I transferred them to an Excel spreadsheet.
All the columns are created into the spreadsheet except for the Job Date column. That is blank in the spreadsheet.
Here's the code:
string Directory = ConfigurationSettings.AppSettings["DownloadDestination"] + Company.Current.CompCode + "\\";
string FileName = DataUtils.CreateDefaultExcelFile(Company.Current.CompanyID, txtInvoiceID.Value, Directory);
FileInfo file = new FileInfo(FileName);
Response.Clear();
Response.ContentType = "application/x-download";
Response.AddHeader("Content-Length", file.Length.ToString());
Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
Response.CacheControl = "public";
Response.TransmitFile(file.FullName);
Response.Flush();
Context.ApplicationInstance.CompleteRequest();
public static string CreateDefaultExcelFile(int CompanyID, string InvoiceNo, string CreateDirectory)
{
List<MySqlParameter> param = new List<MySqlParameter>{
{ new MySqlParameter("CompanyID", CompanyID) },
{ new MySqlParameter("InvoiceNo", InvoiceNo) }
};
DataTable result = BaseDisplaySet.CustomFill(BaseSQL, param);
string FileName = CreateDirectory + "InvoiceFile_" + DateTime.Now.ToString("yyyyMMddhhmmssff") + ".";
FileName += "xlsx";
XLWorkbook workbook = new XLWorkbook();
workbook.Worksheets.Add(result, "Bulk Invoices");
workbook.SaveAs(FileName);
return FileName;
}
private const string BaseSQL = " SELECT q.InvoiceNo AS InvoiceNumber, j.JobNo, j.JobDate AS JobDate, " +
" (SELECT Name FROM job_address WHERE AddressType = 6 AND JobID = j.ID LIMIT 0,1) AS DebtorName, " +
" (SELECT CONCAT(Name,CONCAT(',',Town)) FROM job_address WHERE AddressType = 3 AND JobID = j.ID LIMIT 0,1) AS CollectFrom, " +
" (SELECT CONCAT(Name,CONCAT(',',Town)) FROM job_address WHERE AddressType = 2 AND JobID = j.ID LIMIT 0,1) AS DeliverTo, " +
" deladd.Town AS DeliverToTown, deladd.County AS DeliveryToCounty, " +
" (SELECT DocketNo FROM job_dockets WHERE JobID = j.ID LIMIT 0,1) AS DocketNo, " +
" SUM(j.DelAmt) AS DelAmount, " +
" (SELECT CAST(group_concat(DISTINCT CONCAT(AdvisedQty,' ',PieceType) separator ',') AS CHAR(200)) FROM job_pieces WHERE JobID = j.ID GROUP BY JobID ) AS PieceBreakDown " +
" FROM Invoice q " +
" LEFT JOIN customer c ON q.accountcode = c.ID " +
" INNER JOIN job_new j ON q.JobID = j.ID " +
" LEFT JOIN job_address coladd ON coladd.JobID = j.ID AND coladd.AddressType = 3 " +
" LEFT JOIN job_address deladd ON deladd.JobID = j.ID AND deladd.AddressType = 2 " +
" WHERE q.IsActive = 1 AND q.Company_ID = ?CompanyID AND q.InvoiceNo = ?InvoiceNo " +
" group by j.id";
The sql returns all the correct information and as you can see the job date is there:
But when I open the Excel file after it is created, the job date column is blank:
You should convert JobDate in BaseSQL to string.
A sample example is given below. You can use it to get an idea how to convert datetime to varchar.
DECLARE #myDateTime DATETIME
SET #myDateTime = '2008-05-03'
--
-- Convert string
--
SELECT LEFT(CONVERT(VARCHAR, #myDateTime, 120), 10)
I don't know what framework do you use to export data to excel and how powerful it is, but I do know that Excel does not directly support dates (surprise!), at least not in xml-based (OpenXml) xlsx documents. It works only with strings and numbers (which are saved in underlying document as string and number literals)
Considering that, you can use simple workaround: convert your dates to strings via either cast/convert in sql or ToString() in C#. You will loose Excel date functionality (like date filters, custom formats), obviously.
However, it is not an only way (cheers!). You can save your data in the same way Excel stores it. If your framework does not support it, you will have to do it yourself: the recipe will be the same as with creation xlsx documents by hand with DocumentFormat.OpenXml.dll.
Actually, Excel uses "OLE-Automation Date" format as internal representation for dates, which is implemented as a floating-point number whose integral component is the number of days before or after midnight, 30 December 1899, and whose fractional component represents the time on that day divided by 24. This representation is stored in document as number literal. Excel distinguishes dates and numbers by numbering format of corresponding cell. With that in mind, you can use not so simple workaround:
First, convert your dates to numbers:
DateTime date = DateTime.Now;
double dateValue = date.ToOADate();
//or
TimeSpan time = DateTime.Now.TimeOfDay;
double timeValue = (DateTime.FromOADate(0) + time).ToOADate();
Then double variable should be set to CellValue of Excel Cell, you can create new column with double datatype in DataTable, fill it using this transformation, then drop original DateTime column.
Second, apply date format to desired cells. Unfortunately, required code will differ between frameworks, but the principle should be the same:
Locate corresponding cell range (either CellRange or Cells, maybe Columns)
Set date format string (via something like range.NumberFormat.Format="dd/mm/yyyy" or range.NumberFormatString="dd/mm/yyyy")
If, however, this framework does not support simplified formatting (very strange framework that will be), you will have to either set range.NumberFormatId=22 for standard date format or create new number format. If you are rather unlucky and this framework is as simple as DocumentFormat.OpenXml, you will have to create custom CellFormat with correspoding NumberFormatId (22 or id of custom NumberFormat), add it to stylesheet and set styleIndex for corresponding range.
I don't know if it's worth checking out, but when working with large datasets and datatables in the past I usually use ClosedXML to get it done. It's easy to just pass a datatable and let it handle creating the XLSX for it. I have it running my my Windows Server 2008 r2 without issue handling large requests with multiple sheets so I know it works really well.
https://closedxml.codeplex.com/
Related
I need to create an Excel file in which the user can later adjust a specific information. I'm using C# and EPPlus v6.0.4. For example, if the input is a list of products, I want it to be joined with ' taxes included' string (which can be later changed by the user at Excel):
descriptionA -> descriptionA taxes included
descriptionB -> descriptionB taxes included
descriptionC -> descriptionC taxes included
I'm assuming two worksheets: ws1 (parameter) and ws2 (output list). As shown below, cell B1 is where the user will be able to change the "taxes included" string.
ws1.Cells["A1"].Value = "Additional information:";
excel.Workbook.Names.Add("auxData", ws1.Cells["B1"]);
ws1.Cells["B1"].Value = " taxes included 12%";
At the second worksheet (ws2) I will have the data being populated.
int excelLine = 1;
foreach (var product in productList)
{
string productDescription = product.Description;
ws2.Cells["A" + excelLine].Formula = .....; //need ideas on how to solve this
excelLine ++;
}
At the above .Formula I was trying CONCAT or similar function but its not working (excel file is generated with errors or the formula is not accepted).
The expected output is a cell value ="product full description variable string" & auxData, therefore suitable to B1 text changes by the user (auxData is an Excel name to =ws1!$B$1).
My own solution was:
int excelLine = 1;
foreach (var product in productList)
{
string cellDescription = "=\"" + product.Description + " -- additional information \" & auxData & \"%\"";
ws2.Cells["A" + excelLine].Formula = cellDescription;
excelLine ++;
}
I import fuel transactions from an Excel file into an SQL database.
One column from the Excel is giving me trouble: "product synonym"
// Match to product
FuelProductTypeSynonym typeSyn = ctx.FuelProductTypeSynonym.SingleOrDefault(s => s.Name.ToUpper() == row.Product.ToUpper());
if (typeSyn == null)
{
result.Errors.Add("[" + fileName + "] (row " + currentRow + "): product match not found.");
}
If the product synonym doesn't match what's in the database, the program stops. In my case, I have a product "FOOD/BEVERAGE" and it seems like the "/" portion of the name can't be parsed from Excel.
How do I get around this "/" so SQL understands that name?
I have imported the result set of a SQL query into a datatable like this:
http://postimg.org/image/rg2eld2wt/
Is there a way to write a line to a text file so that the code column is transposed into a single row arranged like this depending on number of different values in the column?
1|bob|johnson|9/4/1989|1|2|3|4|5|6
Use the LINQ GroupBy statement.
That is,
var lines = myDataTable.AsEnumerable().GroupBy(row => //grouping Selector
new { id = row.id,
, firstName = row.firstName
, lastName = row.lastName
, dob = row.dob
}, (key, rows) => //result selector
(key.id + "|"
+ key.firstname + "|"
+ key.firstname + "|"
+ key.dob + "|"
+ string.Join("|", rows.Select(codeRow => codeRow.code))
)
);
if using untyped datatables, replace the row.foo with row["foo"].
This will give you an IEnumerable full of the rows of the file you desire. Just write that out to the file.
I obviously havent' tested or even compiled this, but it's a rough sketch of how you can group things in Linq.
Cenario:
I have a GridView bound to a DataSource, every column is sortable.
my main query is something like:
select a, b, c, d, e, f from table order by somedate desc
i added a filter form where i can define values to each one of the fields and get the results of a where form. As a result from this, i had to do a custom sorting so that when i sort by a field, i am sorting the filtered query and not the main one.
Now i have to do custom paging, for the same reason, but i don't understand the philosophy of it: I want to guarantee that i can:
filter the results
sort by a column
when i click on page 2, i get page two of the filtered and sorted results
I don't know what i have to do, so i can bind the GV with this. My sorting Method, that is working just fine looks something like:
string condition = GetConditions(); //gets a string like " where a>1 and b>2" depending on the filter the user defines
string query = "select a, b, c, d, e, f from table ";
string direction = (e.SortDirection == SortDirection.Ascending)? "asc": "desc";
string order = " order by " + e.SortExpression + " " + direction;
UtilizadoresDataSource.SelectCommand = query + condition + order;
i've never done custom paging, i am trying:
GetConditions() //no problem here
How can i find out how the GridView is sorted (by what field and sortingorder)?
thank you very much
You can use ROW_NUMBER to get the number of rows that a query is returning and then filter only those element that will be visible for the given page. For example you should add ROW_NUMBER function in the select clause and add the filtering in the where cause.
string condition = GetConditions(); //gets a string like " where a>1 and b>2" depending on the filter the user defines
string query = "select ROW_NUMBER() OVER(ORDER BY " + order + ") a, b, c, d, e, f from table ";
string direction = (e.SortDirection == SortDirection.Ascending)? "asc": "desc";
string order = " order by " + e.SortExpression + " " + direction;
condition = condition + " RowNo BETWEEN ((#Page - 1) * #PageSize + 1) AND (#Page * #PageSize) "
UtilizadoresDataSource.SelectCommand = query + condition + order;
You can find a more detailed example here.It also contains a sample project with binding a grid.
P.S. I would suggest you to create a stored procedure and pass the parameters from the code behind. This can increase the speed and also it easier to maintain.
Is there a way to add rows from a DataTable to a Excel spreadsheet without interating through a SQL Insert Statement as so? Are there any alternative methods?
foreach (DataRow drow in DataTable DT)
{
cmd.CommandText = "INSERT INTO [LHOME$]([Date], [Owner], [MAKE], [BUY],
[OVERAGE], [SUM]) " + "VALUES(" + "'" + drr.ItemArray[0].ToString() + "'" + "," + "'" + drr.ItemArray[1].ToString() + "'" + "," + "'" + drr.ItemArray[2].ToString() +
I'm trying to work around the DataTypes going into Excel worksheet. Because all my numbers which are saved as string are being inserted as a text with a conversion prompt on each cell. When I write to the worksheet as is. The dataTypes are all Strings. But I'm looking for a way that I don't have to specify the DataType. If there was a way to just push my changes from a DataTable and commit my changes to the spreadsheet.
Here's a shot in the dark, as I've never used IronPython and you may be asking for a C# specific solution. You could try using IronPython here and using this Python library made for accessing excel:
http://www.python-excel.org/
Here's some example code to get a feel for how easy it is to work with:
import xlwt
wb = xlwt.Workbook()
ws = wb.add_sheet('A Test Sheet')
ws.write(2, 0, 1)
ws.write(2, 1, 1)
wb.save('example.xls')
I'm not sure what problem you're trying to solve, but maybe this can help you out.