I am reading a CSV file created by Excel. the string I am reading needs to be encoded (it shows small boxes instead of hebrew characters) so I wrote a lil routine to convert the string -
Function encodeName(ByVal name As String) As String Dim src As Encoding = Encoding.UTF8 Dim dest As Encoding = Encoding.Default Dim srcBytes() As Byte srcBytes = src.GetBytes(name) Dim asciiBytes() As Byte = Encoding.Convert(src, dest, srcBytes) Dim mychars(dest.GetCharCount(asciiBytes) - 1) As Char dest.GetChars(asciiBytes, 0, asciiBytes.Length, mychars, 0) Dim asciiString As New String(mychars) End Function
From what I read FileStream.ReadLine reads the text with encoding UTF8 so I try to convert from UTF8 to Encoding.Default buy instead of little boxes I get question marks.
I am reading an excel file in C#.NET. The data is being read successfully but there is problem with some hyperlinks stored in the excel file. I can read their text but i dont know how to get the underlying link/url of the column. I couldnt find much help on google as well. if someone has worked in a similar situation please let me know what can be done.edit::: i am using OleDb namespace for establishing a connection with the Excel file so if someone can post a solution which applies to this situation
I have some code that reads records from an excel file and then imports that data into an sql database. The issue only happens when the excel file has more then 350 rows in it. In the middle of the import it just stops executing and I get directed to the 'Internet Explorer cannot display the webpage' page or just a blank page when using firefox.
I dont get any time out errors or any error at all but still I tried messing around with the script timeout settings but still does the same thing at about the 2 min 30 sec mark.
I need to be able to read an excel file from a file upload control but I can not save the file to disk first, it must be done in memory.
Above is my code for reading the data file if it IS saved to disk, but again, I have to be able to do this without saving the file to disk, it must be done in memory. I have not been able to find any sample code anywhere on how to do this from memory, everything seems to force the file be uploaded, saved to disk, and then read in the connection string, which again I can not do.
I understand how to use a connection string object to read excel sheets. What I don't know is how to follow a hyperlink inside excel, grab matching data from the linked page and return it to my database. Essentially, the spreadsheet has two columns:
Title | Class#
Class# has the hyperlink which links to an internal web site. The connected page has a course description and any pre-required classes that must be taken before you can take this class. This is where I'm rather stumped as I've not had to do this type of thing before.
But some times the file that is read, reports that there is more rows than there actually are. i.e. I only have 300 lines of data but the read reads in 500. My question is, and I am sure I have seen this somewhere but I cannot find it now, is how do I get the reader to stop reading at the first blank line?
in my application i have to read from an excel files and check the value of every cell i'm using an OleDb connection to open it and reading but i have this issue if some of the cells in the excel sheet is having this warning when i try to read it returns DBNull ??could any one give me a clue ....knowing that i can not force the user for not having this warning ...i have to solve this within my code .
I am using reading data from excel file and inserting into sql server using following article, it seems to be working correctly except when I do page refresh normally, it again execute the the btnUpload_click. I want that once the record imported and if user refresh the page again it should ask for enter file name again. let me know how do I resolve this? [URL]
I can directly use to read and display Excel or CSV files using asp web control(GridView, sqldatasource etc). I do NOT want to upload the file first to an sql database before reading them, I just want to read the files directly. I am using asp.net 2.0 and c#.
I have a web page with a gridview control and a button for Exporting to Excel
I get following error when exporting to Excel.
"The file you are trying to open, 'someFileName.xls, is in a different format than specified by the file extension. Verify that file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?"
Clicking Yes opens the file. I would like to avoid showing the above error to the users.
Following code is used from the click event. I've left the commented code here to show what I've tried based on results from internet search. I have Microsoft Office Excel 2007 on local PC.
I know this is probably a pretty easy thing to do and it is if I can upload the file and store it onto the hard drive of the server. What I need to do is read the text file into memory and then parse through it one line at a time. Anyone have any code that demonstrates that?
I am trying to create double and number format cells in excel using NPOI library. I used code like
Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString))
In excel numbers are aligning right but when I check format it is showing in "General"
then I changed my code to like below
Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString)) Dim cellStyle As HSSFCellStyle = hssfworkbook.CreateCellStyle cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("#,#0.0") cell.CellStyle = cellStyle
Then While opening file it is giving error and also taking so long to open. But Excel format showing in "Number" error showing is like below.
I'm building a User Control that will allow a user to select input parameters, run a query and then view the results in a GridView control. That part is obviously very easy. However, I've been asked to also provide the option of viewing and/or printing the data in a PDF, Excel or CSV file format.
Are there any .Net 2.0, built-in classes that allow for exporting and printing data in these formats in Visual Studio 2005?
A couple of years ago, I worked on a website that offered this functionality in Crystal Reports, but on this particular assignment, we aren't currently using Crystal - I'm not at work right now, and I can't remember if we're running the "Standard" or "Enterprise" edition of Visual Studio.
I'm exporting data to an excel sheet from the ojects list. The data is exporting to excel sheet well, but I'm unable to see the grid format for the data. The data is looking with out the rows and columns lines.I think I'm missing to set some property or somethnig ehwn exporting.