BUG: Excel ODBC Driver Disregards the FirstRowHasNames or Header Setting (288343)

SYMPTOMS

When you use the Microsoft Excel Open Database Connectivity (ODBC) Driver to connect to an Excel worksheet as an ODBC data source, the driver assumes by default that the first row of worksheet data contains column headers (field names). According to the driver documentation, the optional FirstRowHasNames connection setting can be used to change this default behavior by using 0 for False and 1 for True. However, in fact, the driver disregards this setting and the first row of data is always treated as column headings. If the first row of data does not contain column headings or other entries, the effective result is that the first row of data "disappears."

RESOLUTION

The HDR= setting is available and functional when you use the Microsoft Jet OLE DB Provider and its Excel ISAM driver. Therefore, the best solution is to use the Jet Provider rather than the Excel ODBC driver.

Because the Excel ODBC driver always assumes that the first row contains field names, the first row must always contain either valid field names, or dummy entries that the developer is willing to disregard.

MORE INFORMATION

Steps to Reproduce Behavior

Create a new Excel workbook and save it with the default name in the folder where you will create your Visual Basic test project.
In cell A1, fill a few cells in the first column with random data.
Create a new Visual Basic project and set a reference to ActiveX Data Objects (ADO).

Enter and run the following code:

Private Sub Form_Load()
  Dim cn As ADODB.Connection
  Dim rs As ADODB.Recordset
  Set cn = New ADODB.Connection
  With cn
    .Provider = "MSDASQL"
    .ConnectionString = "Driver={Microsoft Excel Driver (*.xls)};DBQ=" & App.Path & "\Book1.xls;FirstRowHasNames=0;"
    .Open
  End With
  Set rs = New ADODB.Recordset
  With rs
    Set .ActiveConnection = cn
    .Source = "[Sheet1$]"
    .Open
  End With
  Debug.Print rs.Fields(0).Value
  Debug.Print rs.Fields(0).Name
  rs.Close
  cn.Close
End Sub

Normally you would expect to see the Excel driver assign the default field name "F1" to your column of data and to display the data beginning with the first record that you entered in cell A1. However, note that in the Debug window, the value that you entered in cell A2 printed as the value of the first record in spite of your having set FirstRowHasNames to False. The value in cell A1 has "disappeared" to become the field name for the column.

REFERENCES

For additional information278973, click the article numberSAMPLE: Excel ADO Demonstrates How to Use ADO to Read and Write Data in Excel Workbooks below to view the articleSAMPLE: Excel ADO Demonstrates How to Use ADO to Read and Write Data in Excel Workbooks in the Microsoft Knowledge Base:

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