use C# to get excel sheet names


I have lots of excel files (*.xls) I need open and read it for further anslysis.

I use the following code to read excel sheet name. However, some excel files work some are not. for those has error. it  is because it will return extra strange sheet names which do not actually appear in the excel file.

for example an error in a excel file return me extra strange sheet names like my attached pictures. (It should be only 1 sheet3$)

I think the file does not have problem because I use Matlab to read excel sheet names. and it return me correct without any extra strange sheet names. like below

 [typ, Stru_sheet_names] = xlsfinfo('D:\VM_SSIS\xls_In\sample3.xls')

typ =

Microsoft Excel Spreadsheet

Stru_sheet_names =

    'Sheet1'    'Sheet2'    'Sheet3'    'Sheet4'    'Sheet5'    'Sheet6'    'Sheet7'    'Sheet8'

Could someone help me about this. thanks in advance

string str_conn_xls = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\\VM_SSIS\\xls_In\\sample3.xls;Extended Properties=\"Excel 8.0;HDR=NO;IMEX=1\"";

OleDbConnection objConn = null;
DataTable DT_sheet = null;

// Create and Open OleDbConnection
objConn = new OleDbConnection(str_conn_xls);

// Get the data table   
DT_sheet = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

 // get all sheet names
 for (int i = 0; i < DT_sheet.Rows.Count; i++) 

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You would all the names including the hidden names. These hidden names are created as a result of the activities on the worksheet.

Anything that ends with $ is a valid value and rest are system defined hidden values for system processing.

So you have to filter on the basis that the name should end with $ else ignore.

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