winform 类别异常
public class DBHelper
{
public static readonly string webConstring = System.Configuration.ConfigurationManager.AppSettings["conString2"];

public DataSet getAll()
{

using (OracleConnection con = new OracleConnection(webConstring))
{
DataSet ds = new DataSet();
try
{
string sql = "select function_name from quality_function ";
OracleCommand cmd = new OracleCommand();
cmd.Connection = con;
cmd.CommandText = sql;
cmd.CommandType = CommandType.Text;
OracleDataAdapter da = new OracleDataAdapter(cmd);
da.Fill(ds);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);

}
return ds;
}
}
}

这是写winform是写的DBHelper类，当在调用它的时候发生异常
'WindowsFormsApplication1.DBHelper' 的型初始定式生例外。

求解！！！！！！！！！！！ WinForm 异常 类 SQL String
[解决办法]
该回复于2013-08-20 15:53:00被管理员删除