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=Micro soft.Jet.OLEDB. 4.0;" +
"Data Source=" + strpath + ";" + "Extended Properties=Exce l 8.0;";
OleDbConnection objconn = new OleDbConnection (strConnection) ;

if (objconn.State == ConnectionState .Closed)
{
objconn.Open();
}

Excel.Applicati on app = new Excel.Applicati on();

Excel.Workbook lworkbook = app.Workbooks.O pen(txtselect.T ext, 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.ActiveWorkb ook;
Excel.Sheets lsheets = lworkbook.Works heets;
Excel.Worksheet lworksheet = (Excel.Workshee t)lsheets.get_I tem(1);
lworksheet.Name = "person12";

OleDbCommand cmd = new OleDbCommand();
OleDbDataAdapte r adp = new OleDbDataAdapte r("select * from person12", objconn);

adp.Fill(dt);
dataGridView1.D ataSource = dt;
objconn.Close() ;