找不到Pinvoke DLL 'dbnetlib.dll'
VS 2008 c#
PDA为KEYENCE BT-W85G
连接数据库为SQL2008R2
SqlDataAdapter sql = new SqlDataAdapter("select * from usrinfo where usrid='" + tbxCardRead.Text + "' and usrpsw='" + tbxPwd.Text + "'", CommandClass.getConnectStringfg());
DataSet dt = new DataSet();
sql.Fill(dt, "usrinfo");(这一步如题报错)
求解决!