While coding asp applications in vbscript objects are set to nothing when they are no longer required. What about when coding with javascript. Is it necessary to set javascript objects to null or the garbage collector works differently for javascript ?
View RepliesI'm writing an application, and now an error message always pops up showing that one of the variable 'is null or not an object'
I wish to know what is the possible cause of this error message. I've defined the variable at the beginning of the program. So it there anything to do with the variable fail to get value from the form. The variable is the 'select' name of a drop down list.
I am working in html/asp within VisInterDev 6.0. Everything was working fine until I moved a text box from one page to another. I took it from within a form on one page to a form on another (and made the necessary changes in the two pages).
Here is the code that is generating the error:
<body onload="javascript:eventreg3.distance.focus();">
However I am using syntactically indentical code on other pages that work fine so I know the problem is not with that line.
It appears that it is not able to find the "distance" text box, but I have been over and over the html and can't find an issue. If I take that line out (keeping the <body> of course) it doesn't generate an error but my submit button doesn't work.
I have encountered some strange behaviour when using the XMLHTTP Request object in Javascript to return xml from a C# Webservice Method. I create a SOAP envelope and send it off to the Webservice, which I have debug points in, which when hit I can see that all the parameters are coming thru as null....
View Replies View RelatedI have a custom function for checking if a variable has been set or not to make the code easier to read, as well as to keep it shorter.
However, I'm getting errors that "Object Variable not Set", even after I've already checked for null and empty. Code:
Guys Just in case anybody know how to pass a javascript object in ASPCASE:
I have an input button with a Click event
<input type="button" onClick="JScript: done(this,<%param1%>,<%param2%>)"
Now param 1 and param 2 are ASP variables whic I sucessfully requested in another asp
page.. like this...
<input type ="hidden" value="<%=param1%>">
<input type ="hidden" value="<%=param2%>">
Now the problem is I want the object "this" to be passed to another page.
I got two ASP pages. One is ASP email form (I'm using Persist ASP
Email component). Another one has all file links in it. For example,
when user click Outlook course hyperlink. It will pop up another
window with outlook course PDF file. (All PDF files are already in the
server).
What I am trying to do is: When user click the "Add Email" hyperlink,
it will add that course name and filepath into ASP/VBScript Dictioanry
Object. After the user finish and click "Attach to email" button. All
the files will be attached in the email as an attachment.
Because I am not familar with VBScript. So, can Javascript add items
to ASP Dictionary Object?
I wrote 2 ASP pages that communicate with JavaScript objects. page1.asp and
page2.asp are put in separate servers in separated machines. If I put in
single machine, it is fine. Now it has Runtime error: 'params.test' is null
or not an object. Any ideas?? Code:
<script type="text/javascript"
function window_onload(
{var params = new Array()
params["streetNumberPrefix"] = <% Request.Form("streetNumberPrefix") %>
</script></HEAD><BODY onload="window_onload()">
I have an ASP page that uses VB as the language. It accesses my database via RedBack objects and methods. Here's the snafu I've encountered today -
I have a form defined (in HTML). I populate all of the fields within the form with values from the database (the records will always have data when this form displays). I use a for next to loop through the records (with multivalued fields). Here is a piece of the code:
I have an interesting situation that needs to be addressed ASAP.
I am running a standard SQL Query in ASP to retrieve some rows/columns from a table that's on a SQL Server 2000 database. I put the results of that query into a RecordSet, and then use the GetRows function to push the results that are in the recordset into an array variable. In the query that I am running, 39 columns and 2 rows are returned.
The GetRows function appears to be working - the array variable is being created with the proper dimensions. However, the values of the different "cells" of the array are not showing up correctly. The first and the last column values for each row are correct, yet everything else in between is blank, empty, NULL, or whatever.
In other words: ArrayVariable(0,0) shows up correctly, ArrayVariable(38,0) shows up correctly, but everything in between is null.
I did a test on the RecordSet and discovered that it was the culprit - it wasn't being filled in properly. This is strange, though, because the select query that I run in the ASP code to create the recordset returns perfect results when I run it on the SQL Server 2K database.
I'll admit my ASP skills are very rusty, and come seeking help.
I'm currently using a dictionary object to store a multi-dimensional array.
I want to pass this dictionary object to an object, which holds an array of dictionary objects.
However I'm finding that the array is not getting set, thus I'm having great issue with dynamically resizing the object's property for every new dictionary object I'm adding.
I have a VC++ COM object which fires an event. I've written VB EXE apps against it and they receive the event notification.
I've now built a simple VB COM object which uses the VC++ COM object internally.
My question is, assuming the ASP page which loads the object does not immediately exit, will the VB COM object be able to receive the events from the internal object?
I have created a table. How do I limit the result of that table to only show the entries that have the "address" filled in. In Access here is the sql coding to acheive the results.
SELECT Dropoffs.City, Dropoffs.StateInitials, Dropoffs.AcceptedItems, Dropoffs.MoreInfo, zipcodes.Address
FROM zipcodes, Dropoffs
WHERE (((zipcodes.Address) Is Not Null));
How do I set this up in my VBSCRIPT page?
Here is my working page so that you can see what I am trying to acheive. When the page comes up you can type 45255 for the zipcode.
I try to select the not null value from the database in column comment.
select s.ques_no, s.task_no, s.goal_no, g.comment from step_tab s, gen_tab g where s.id = g.id and g.comment is not null
But it still return all the null value.
Can anyone please tell me why?
Besides that, why i can't increase the number that i selected from the database.
id_no = rs("id_no")
id_no = cint(id_no") + 1
Why the id_no never increase even i had "+1"?
I might be doing this wrong but I am modifying the body tag depending on what a recordset tells me.
It works fine if the value exist, but if it is returned null then I can't get it to work ...
I had set up the following 'trouble-shooting' code to determine how a certain value was being 'evaluated' for lack of a better term. The field "status" in this example has no value in it.
<%
status = RS("status")
If isnull(status) Then
response.write("status is null")
end if
if status = "" Then
response.write("status has no value")
end if
%>
The database field 'status' has no value in it. If I run the above trouble-shooting code, the first statement "status is null" will print out. If I remove the first if statement and use the second if statement 'if status = "" ...', the statement will NOT print indicating that the value <> "".
Questions: What is the difference between something not having a value and NULL?
Most importantly, what is the PROPER way to check for a field not having a value in it? In the past I have always checked for a 'no value' using double quotes.
I'm using the following code to, firstly erase any old logins the user has. Then to check whether the page has been idle for longer than 30 minutes or not. If it has been idle for longer than 30 mins then the user will be required to input their password again. However it's not working! Code:
View Replies View RelatedMicrosoft OLE DB Provider for SQL Server (0x80040E2F)
Cannot insert the value NULL into column 'ContactID', table 'ka0506a.ka0506a.contacts'; column does not allow nulls. INSERT fails.
/submitcontact.asp, line 15
What happened is i used to used MS Access and ContactID is an Autonmuber field, and now my connection is set to MS SQL so it's giving me this error, what's causing this error to happen and how can i change it ?
how to check any value in asp that it is null or not.
View Replies View RelatedI have a condition that will run depending if a field in the database is NULL. It will not run at all, and I tried various way to write it but none works so far
'not working
If assignee = DBNull Then
'not working
If assignee = null Then
'not working
If assignee = "" Then
If I write assignee to the page then the value of assignee will write if it has a value and nothing if it is null.
I have a data entry form. If the user submits the form without entering any data, the record should be inserted with null entries for the respective fields.
But when i execute the INSERT SQL query with these null values, it gives me an error.
This is vat I am doing:
<%
.....
address = request.form("address")
if request.form("Age")= "" then
ageValue=""
.....
.....
%>
I use these values in SQL query
This is the SQL statement when the above is executed
" INSERT INTO tblStatistics (Age,address) VALUES (, aaa)"
Because of no value for age, the query is not gettin executed.
I dont want a 0, I want a nul entry (<null>).
Could someone throw some light on how to set the age field to null?
Can someone help with an error? It's a StoreFront store. right after the credit card screen is gives me the error. I get the following:
Microsoft VBScript runtime error '800a005e'
Invalid use of Null: 'replace' /ssl/SFLib/incGeneral.asp, line 85
--------------------------------------------
84 Function makeInputSafe(str)
85 makeInputSafe=replace(str, "'", "''")
86 End Function
-------------------------------------------
i had select the data from the database. The null value are returned.
How can i convert the null value to integer so that i can add some value for it??
Actually i try to use both of this statement but there's nothing come out...when i try to selecte the data in the database, the null value are returned
if rs("max_id") = "NULL" then
id_no = 1
response.write "id_no = " &id_no& "<br>"
end if
and
if rs("max_id") = "" then
id_no = 1
response.write "id_no = " &id_no& "<br>"
end if
I have 2 questions about SQL server. First, what should i do about allowing NULL values when designing the database? What difference does it make? And if I disallow NULL values, should i enter default values?
Second, when adding new records to database with recordset.addnew, what SELECT statment, cursor, and lock type should i use?
I've always used "SELECT * FROM Table" and adOpenStatic, and adLockOptimistic. This SELECT statement looks very inefficient to me, but I don't know what else to use.
I am updating a table depending on the user input that could be left blank for the numeric as well as the string field. I am getting an error if I do the following:
Dim a = null
sql = "update country set number =" & a
If I do ... sql = "update country set number = null", it works fine.
How can I use the variable to change the value to null.
I have set up a database, myDB, in MS Access. one of my Table, myTable, has columns Col1, Col2, ..., Col10. Depending on some scenarios, I insert some values in some (but not all) of the columns. Now I want to delete those records that their col3 is null or nothing is set.
I used col3= '' and col3=NULL in the below statement
objRS.Open "SELECT * FROM myTable WHERE col3 = '' ", myDB, , , adCmdText
but none of them works.How to delete a record based on Null value filtering?
I am new to using the filter property. When I try publishDate = '' I
get a type mismatch error
Code:
<img src="/images/thumbs/<% IF rsListProduct("AHFC_Product_ThumbURL") = null THEN %> no_image.gif <%ELSE%><%=rsListProduct("AHFC_Product_ThumbURL")%><%END IF%>" width=50 border=0>
Why does this not work? Field is for SURE null in DB if no image uploaded.
Is there an easier way to check if any of the fields returned in a select statement have null values? After running this command:
set rs = conn.execute("select A,B,C,D,E,F,G,H,I,J from SomeTable
where...")
I could check each field this way:
If IsNull(rs("A") Then
Response.Write("The value of A is null")
Else
Response.Write("The value of A is " & rs("A"))
End If
If IsNull(rs("B") Then
Response.Write("The value of B is null")
Else
Response.Write("The value of B is " & rs("B"))
End If
If IsNull(rs("C") Then
Response.Write("The value of C is null")
Else
Response.Write("The value of C is " & rs("C"))
End If
etc.
But is there a simpler way? Also, my "solution" probably wouldn't work if more than one recordset was returned...
I create a web site in a Windows 2003 server/IIS6, and I used asp pages to get ServerVariables. After I set FrontPage Extension 2002, some ServerVariables like LOGON_USER become null. Any body has an idea?
View Replies View RelatedHow do I go about testing to see if a value is not equal to NULL? isNULL provides the opposite functionality, but all my attempts at the former return a FALSE value.
View Replies View RelatedI have an add page, sending data too an access database, and what I want to do is, if their is a Null value (for example a user forgets to write in a name) then users will be redirected to a page called "wrong.asp"
the following are the add pages, the info is put in through add.asp, and sent through add1.asp. Add.asp is pritty big because there are 3 dynamic drop down lists, (D1, D2, D3)
Code: