Check if variable is empty

[Shapper]

Hello,

I am using this code line to check i a variable exists:
If cookie Is Nothing Then
....

How can I check if cookie is empty when cookie exists?

Thanks,
Miguel

 

[Lucas Tam]

Hello,

I am using this code line to check i a variable exists:
If cookie Is Nothing Then
...

How can I check if cookie is empty when cookie exists?

You can try:

Trim(Cookie) <> ""

 

[William F. Robertson, Jr.]

You could check the data inside the cookie.

if cookie.Values.Length == 0 then
'the cookie is empty
endif

HTH,

bill

 

[Guest]

If(Cookie.Values.Length == 0) Then
'cookie is empty
Else
'cookie is not empty
End If


---

Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA

***************************
Think Outside the Box!
***************************

 

[Shapper]

Hello,

My mistake: I gave the cookie example.

Basically I am looking to a way to check is a String is Empty or Null.

I know ASP.Net will have a IsEmptyOrNull Function.

I have been reading information about this in Asp.Net 1.1 but it seems
there are several ways to do it in relation to optimization.

I am in this moment using the following in VB.NET:

If myString Is Nothing Or myString = String.Empty Then
....

What do you think?

Cheers,
Miguel

 

[William F. Robertson, Jr.]

I always check the length property of a string.

In c# code code I use is

string s;
if ( s == null || s.Length == 0 )
{

}

Length is a property of the string that returns much faster than comparing
to String.Empty.

bill