Question

I am totally new to Windows programming so i don’t know how to access connection string in Class.cs file as we can in web application as follow:

 public DataTable Client_Login_Check(string Email, string Password)
{
    DataTable dt = new DataTable();
    try
    {
        object[] objParam = new object[2];
        objParam[0] = Email;
        objParam[1] = Password;
        return dt = SqlHelper.ExecuteDataset(ConfigurationManager.AppSettings["GL"], "GreenLight_Users_LoginCheck", objParam).Tables[0];
    }

    catch (Exception ex)
    {
        OutputMessage = ex.Message;
    }
    return dt;
}

I have added “System.Configuration” namespace…But still i am not getting ConfigurationManager in help. Please help me..

Answer 1

Apart from adding a reference to System.Configuration.dll in the project, you will also need to add a using declaration for the namespace in the file:

using System.Configuration;

Note:

You should be using ConfigurationManager.ConnectionStrings["GL"].ConnectionString and have the connection string in the connectionStrings configuration section, not in the appSettings section.