Exception from HRESULT : 0x800A03EC --Please help me to fix this error

[santu07]

I am trying to export data from Excel11.0 object to datatable using C#. I can't
properly open workbooks. Can anyone please help me to fix this error. I got the above error when i try to open the Workbooks.Open(___,____, ). I am Beginner So kindly help me.

Here is the code:

          String strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" +
           "Data Source=" + strpath + ";" + "Extended Properties=Excel 8.0;";
                OleDbConnection objconn = new OleDbConnection(strConnection);
 
                if (objconn.State == ConnectionState.Closed)
                {
                    objconn.Open();
                }
 
                Excel.Application app = new Excel.Application();
            // In the bellow line i got this error.  
                Excel.Workbook lworkbook = app.Workbooks.Open(txtselect.Text, Type.Missing, true, Type.Missing, Type.Missing,
    Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
    Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
 
                lworkbook = app.ActiveWorkbook;
                Excel.Sheets lsheets = lworkbook.Worksheets;
                Excel.Worksheet lworksheet =   (Excel.Worksheet)lsheets.get_Item(1);
                lworksheet.Name = "person12";
 
                OleDbCommand cmd = new OleDbCommand();
                OleDbDataAdapter adp = new OleDbDataAdapter("select * from person12", objconn);
 
                adp.Fill(dt);
                dataGridView1.DataSource = dt;
                objconn.Close();