We help IT Professionals succeed at work.

Issues while opening a UTF16 encoded .csv file in excel using c#

Rohan Kumar
Rohan Kumar asked
on
788 Views
Last Modified: 2015-01-02
Hello Experts,

I am facing a problem in opening a .CSV file written using UTF-16 (Unicode) formatting in excel. My all tries to open it correctly either fails while opening of the file or the Unicode characters are not printed correctly in the opened excel file.
So is there any way where we can specify the encoding format of the file to be opened while opening using excel automation objects/functions.

I tried using Workbooks.open( filename) and Workbooks.OpenText( filepath, comma: true) functions.
Note: Both are working fine for a UTf-8 encoded .CSV file but fails for UTF-16(Unicode) case.

Please help me as i badly stuck here.

Thanks in advance
zakoha.csv
Comment
Watch Question

Director, Practice Manager and Computing Consultant
Awarded 2014
Top Expert 2014
Commented:
This one is on us!
(Get your first solution completely free - no credit card required)
UNLOCK SOLUTION
Rohan Kumarsoftware developer

Author

Commented:
Hey..can u please explain how to implement your solution in c# and which approach you are using here.

I am little confused here as i didn't find any parameter (neither at opening .csv file or saving as an excel file) where i can specify this TextFilePlatform value to 28591.

Thanks..
Phillip BurtonDirector, Practice Manager and Computing Consultant
Awarded 2014
Top Expert 2014

Commented:
You create a connection to Excel, add a new workbook, and then you insert the text into it - it's like importing a database connection.

The parameter TextFilePlatform is from the QueryTables interface.

Here is a list of its properties: http://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel.querytable_properties.aspx
Rohan Kumarsoftware developer

Author

Commented:
Thank u very much for the information. I tried implementing this approach and my code is executing without any errors but still m not able to see any data on saved .xls file.

My code looks like this:

   var m_objBooks = (Microsoft.Office.Interop.Excel.Workbooks)m_objExcel.Workbooks;
   var m_objBook = (Microsoft.Office.Interop.Excel._Workbook)(m_objBooks.Add(Type.Missing));
           
    // Create a QueryTable that starts at cell A1.
    var m_objSheets = (Microsoft.Office.Interop.Excel.Sheets)m_objBook.Worksheets;
    var  m_objSheet = (Microsoft.Office.Interop.Excel._Worksheet)(m_objSheets.get_Item(1));
    var m_objQryTables = m_objSheet.QueryTables;
    var range = m_objSheet.get_Range("$A$1");
    var m_objQryTable = (Microsoft.Office.Interop.Excel._QueryTable)m_objQryTables.Add(@"TEXT;c:\zakoha.csv", range);
           
       //  m_objQryTable.CommandType = 0; // throws error Invalid arguments
       m_objQryTable.FieldNames = true;
       m_objQryTable.RowNumbers = false;
       m_objQryTable.FillAdjacentFormulas = false;
       m_objQryTable.PreserveFormatting = true;
       m_objQryTable  .RefreshOnFileOpen = false;
       m_objQryTable.RefreshStyle = Microsoft.Office.Interop.Excel.XlCellInsertionMode.xlInsertDeleteCells;
       m_objQryTable.SavePassword = false;
       m_objQryTable.SaveData = true;
       m_objQryTable.AdjustColumnWidth = true;
       m_objQryTable.RefreshPeriod = 0;
       m_objQryTable.TextFilePromptOnRefresh = false;
       m_objQryTable.TextFilePlatform = 28591;
       m_objQryTable.TextFileStartRow = 1;
       m_objQryTable.TextFileParseType = Microsoft.Office.Interop.Excel.XlTextParsingType.xlDelimited;
       m_objQryTable.TextFileTextQualifier = Microsoft.Office.Interop.Excel.XlTextQualifier.xlTextQualifierDoubleQuote;
       m_objQryTable.TextFileConsecutiveDelimiter = true;
       m_objQryTable.TextFileTabDelimiter = true;
       m_objQryTable.TextFileSemicolonDelimiter = false;
       m_objQryTable.TextFileCommaDelimiter = true;
       m_objQryTable.TextFileSpaceDelimiter = false;
      m_objQryTable.TextFileOtherDelimiter = @"""";
      m_objQryTable.TextFileTrailingMinusNumbers =true;

      m_objQryTable  .TextFileColumnDataTypes = new Array [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]; // throws error Invalid       arguments
      m_objQryTable.Refresh(false); // excel cannot find the text file to refrest this data range

      // Save the workbook and quit Excel.          
      m_objSheet.get_Range("A1").Value2 = "Rohan";
      m_objBook.SaveAs (  @"C:\Users\jsingh\Desktop\TestN", Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook, Type.Missing, Type.Missing,
                Type.Missing, Type.Missing, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing,Type.Missing, Type.Missing);
            m_objBook.Close(false, Type.Missing, Type.Missing);
            m_objExcel.Quit();



Only value that comes is Rohan that is wrote using .value2 property.

Can u please tell me what i am missing here.
Phillip BurtonDirector, Practice Manager and Computing Consultant
Awarded 2014
Top Expert 2014

Commented:
I note you say

// excel cannot find the text file to refrest this data range

Is the csv in the root of the C drive, as in:

"TEXT;c:\zakoha.csv"

If not, the above line will need updating.
Rohan Kumarsoftware developer

Author

Commented:
Aha got it...users folder was different so file was not located at runtime..

Thanks a lot.
Rohan Kumarsoftware developer

Author

Commented:
Got quick and clear response. Gr8 job.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.