Reading Data from Text files

[User (Legacy)]

Hello,

I'm trying to read data from a textfile, but calling GetExternalData

crashes. Whats going wrong?

Example:

      OpenDataEx( COD_VALUES, 3, 3 );

      CloseData( COD_VALUES );

      CString FileName = "Path\\test.txt";

      BSTR BFileName = FileName.AllocSysString();

      VARIANT Val;

      Val.vt = VT_BSTR;

      Val.bstrVal = BFileName;

      ChartP->GetExternalData( Val );

      ::SysFreeString( BFileName );

Data File test.txt:

12 14 17

15 5 2

9 20 12

the values are separeted with tabs.

I also tried csv files, the values are separated with commas, but the effect

was the same.

Thanks for your help

Mike

[Software FX]

GetExternalData doesn't receive a file name. Please check the docs, it

receives a Data Provider object.

If you want to read for a Text File you need to do:

      CString ProviderName = "CfxData.File";

      VARIANT Provider;

      Provider.vt = VT_BSTR;

      Provider.bstrVal = ProviderName.AllocSysString();

      CString FileName = "d:\\temp\\data.txt";

      VARIANT Val;

      Val.vt = VT_BSTR;

      Val.bstrVal = FileName.AllocSysString();

      m_pChartFX->GetExternalData( Provider, Val );

-- 

FP

Software FX, Inc.