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hello,

i am create a Property for session variable

C#
public static string CurrentFolderPath
       {
           get { return System.Web.HttpContext.Current.Session["FolderPath"].ToString(); }
           set { System.Web.HttpContext.Current.Session["FolderPath"] = value; }
       }


but when i am checking the value then it through error Object reference not set to an instance of an object

C#
if (SessionManager.CurrentFolderPath != string.Empty)
              {
                  path = CommonFunctions.UserFolder;
              }


it Through error. Please Help me How to Check This variable value.
Posted

1 solution

you may need to add null check in getter of the property

C#
public static string CurrentFolderPath
{
    get
    {
        if (HttpContext.Current.Session["FolderPath"] == null)
            return string.Empty;
        else
            return (string)HttpContext.Current.Session["FolderPath"];
    }

    set
    {
        HttpContext.Current.Session["FolderPath"] = value;
    }
}


side note: to check string empty you can use string.IsNullOrEmpty method
C#
if (!string.IsNullOrEmpty(SessionManager.CurrentFolderPath))
{
   path = CommonFunctions.UserFolder;
}
   
v3
Comments
Yogesh Kumar Tyagi 28-Apr-14 3:38am
   
Thanks Damith Weerasinghe

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