xxxxxx is not a valid path. Make sure that the path name is - windows

Question

I have windows application that can access files from setting.ini file I modified it and get access to them from my code. but still getting this error like 'C:\Users\infinity\Desktop\aadinathfiles\ALL EVENT FILE FORMAT\TRADING MASTER FILE\ISE CLEINT MASTER.xls' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides.
here is my setting.ini file code :
[UserDetail]
UserID=xxxxxxx
PassWord=xxxxxxxx
[Connection]
contact=C:\Users\infinity\Desktop\aadinathfiles\ALL EVENT FILE FORMAT\TRADING MASTER FILE\ISE CLEINT MASTER.xls
DebitISE=C:\Users\infinity\Desktop\aadinathfiles\ALL EVENT FILE FORMAT\TRADING MASTER FILE\ISE 1.xls
DebitLKP=C:\Users\infinity\Desktop\aadinathfiles\ALL EVENT FILE FORMAT\TRADING MASTER FILE\ISE CLEINT MASTER.xls
[FilePath]
DebitISEClient=C:
[FileName]
DebitISEClient=Contact_06-07-2015.txt
and here my code for accessing this files from ini file :
private void button1_Click(object sender, EventArgs e)
{
string filepath = txtpayoutfile.Text;
string message = "";
string mobileno = "";
string name = "";
DataSet dsmaster = new DataSet();
string filepathc = ini.IniReadValue("Connection", "contact");
if (filepath == "")
{
MessageBox.Show("Import Contact File");
this.Show();
}
if (Path.GetExtension(filepath) == ".xls")
{
oledbConn1 = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepathc + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"");
}
else if (Path.GetExtension(filepath) == ".xlsx")
{
oledbConn1 = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepathc + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1;';");
}
oledbConn1.Open(); ////exception occurs here
if (Path.GetExtension(filepath) == ".xls")
{
oledbConn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"");
}
else if (Path.GetExtension(filepath) == ".xlsx")
{
oledbConn = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1;';");
}
OleDbCommand cmdoledb = new OleDbCommand("Select * from [Sheet1$3:3000]", oledbConn);
OleDbDataAdapter daoledb = new OleDbDataAdapter(cmdoledb);
DataTable dt = new DataTable();
daoledb.Fill(dt);
}