iam getting error in 3rd line of below c# code as object reference not to set an instance oc object

Question

1.00/5 (1 vote)

See more:

HttpRequest request = context.Request;
HttpResponse response = context.Response;
string fromdate1 = request["from"].ToString();
string fromdate = dateConvert1(fromdate1);
string todate1 = request["to"].ToString();
string todate = dateConvert1(todate1);

Posted 10-Dec-14 18:02pm

Member 11221115

Add a Solution

Comments

[no name] 11-Dec-14 0:34am

Hi,

Put a break point and check. that all the values variables has the values.

e.g request["from"].ToString();

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Raul Iloc · Answer 1 · 2014-12-10T19:41:00

1. The first part from the 1st solution is OK, you are trying to use something that is not found in the request cache.

2.The solution is more simple, just to test with null and to get value from the cache that is already a string and not to use ToString().

C#

string fromdate1 = (request["from"] == null ? string.Empty : request["from"]);

PS: Note that in the web application caches (like Session, Application, etc.), the data are saved by using boxing (as objects), than when you get something from cache you should use unboxing and not ToString(), like below:

C#

string userName = (string)Session["UserName"];

For more details about boxing and unboxing see in MSDN: http://msdn.microsoft.com/en-us/library/yz2be5wk.aspx[^]

Pratik Bhuva · Answer 2 · 2014-12-10T19:17:00

This error saying that there is something "null".

C#

string fromdate1 = request["from"].ToString();

if you are getting error in this line there is possibility that request["from"] is null.
so if request["from"] is null then its not possible to write like...

C#

// if request["from"] is null then your code seems like...
null.ToString();
//This is not Allowed.

You better check if its null or not before you use this.

C#

string fromdate1 = !string.IsNullOrEmpty(request["from"]) ? request["from"].ToString() : string.empty;

Hope this Help.

iam getting error in 3rd line of below c# code as object reference not to set an instance oc object

2 solutions

Solution 2

Solution 1

Add your solution here

Preview 0