how to convert session value to string

Session value get like this you was write code.
firstly say what is error.
as it give null value.
YOU CAN ALSO USED :-

string firstName = (string)(Session["First"]);

OR

string str=session["name"].ToString();

for this you need to check your session variable exist or not or expired, abonden.
SO YOU NEED TO READ FOLLOWING LINK:=
http://msdn.microsoft.com/en-us/library/03sekbw5(v=vs.100).aspx[^]

if you are getting error null object or object reference not set to...

then

string str = "";
if (session["name"] != null)
{
    str = session["name"].ToString();
}

Happy Coding!
:)

session return object type.
try it-> string str=session["name"].ToString();

Try this:
string str=session["name"].ToString();

Hi,

I would suggest that the best way would be to use Convert.ToString() instead of the .ToString() method. This is because by default, the .ToString() method doesnot have the capability to handle null values, hence this would throw an error when you try to convert null values to string. On the other hand Convert.ToString() method has the default capability of handling null values & hence won't throw any error -

string str = Convert.ToString(session["name"]);

Hi,

Session always return Object type.

It will only get error if your object is null.
The Error will :

object reference is not set to an instance of an object 

To solve this kind of scenario

string Name= (Session["Name"] ?? "").ToString();

I usually use a Session-backed property when working with a session object

public string MyVariable
{
    get
    {
        object temp = Session["MyVariable"];
        return temp == null ? string.Empty : temp as string;
    }
    set
    {
        Session["MyVariable"] = value;
    }
}

Now I don't have to remember what the Session variable name is and I have intellisense support for it. If at some point the Session variable is null then it will return a default value, which in this case is an empty string. The default can be changed depending on what the actual data type is you're working with. Here's a quick example of how you would use this in your code.

public string MyVariable
{
    get
    {
        object temp = Session["MyVariable"];
        return temp == null ? string.Empty : temp as string;
    }
    set
    {
        Session["MyVariable"] = value;
    }
}

protected void Page_Load(object sender, EventArgs e)
{
    MyVariable = "This is some text.";
    TextBox1.Text = MyVariable;
}

Try this !!!

string str = "";
if (session["name"] != null && session["name"].ToString() != "")
{
    str = session["name"].ToString();
}