Hwo to handle empty fields in XML

Bill Nguyen

The following XML has an empty <UserDefinedT ag /(first record)
My VB.NET app got stuck here because I don't know how to handle it. It works
fine with a vlid user defined tag (next record)

<UserDefinedTag >40320121</UserDefinedTag>

Your help is greatly apprecited!!

Bill

- <JACOData>
- <Inventorys>
- <Inventory Type="Physical" >
<Product>Dyed Diesel</Product>
<TankNumber>150 08230383-1</TankNumber>
<UserDefinedT ag />
<DateTime>1/14/2007 1:00:49 PM</DateTime>
<Volume>308.122 </Volume>
<Ullage>2674.88 </Ullage>
<Height>12</Height>
<WaterHeight>3. 4</WaterHeight>
<DaystoEmpty> 1</DaystoEmpty>
</Inventory>

- <Inventory Type="Physical" >
<Product>Clea r Diesel</Product>
<TankNumber>150 08230411-1</TankNumber>
<UserDefinedTag >40320121</UserDefinedTag>
<DateTime>1/14/2007 12:00:49 PM</DateTime>
<Volume>308.122 </Volume>
<Ullage>5805.88 </Ullage>
<Height>12</Height>
<WaterHeight>-9.44</WaterHeight>
<DaystoEmpty> 0</DaystoEmpty>
</Inventory>
- </Inventory>
</Inventorys>
</JACOData>

Jan 18 '07 #1

Subscribe Reply

2719

Robert May

Bill,

Check to see if the UserDefinedTag has children. If so, you know there's a
value supplied, if not, it doesn't have one.

Robert

"Bill Nguyen" <bi************ *****@jaco.comw rote in message
news:%2******** ********@TK2MSF TNGP03.phx.gbl. ..

The following XML has an empty <UserDefinedT ag /(first record)
My VB.NET app got stuck here because I don't know how to handle it. It
works
fine with a vlid user defined tag (next record)

<UserDefinedTag >40320121</UserDefinedTag>

Your help is greatly apprecited!!

Bill

- <JACOData>
- <Inventorys>
- <Inventory Type="Physical" >
<Product>Dyed Diesel</Product>
<TankNumber>150 08230383-1</TankNumber>
<UserDefinedT ag />
<DateTime>1/14/2007 1:00:49 PM</DateTime>
<Volume>308.122 </Volume>
<Ullage>2674.88 </Ullage>
<Height>12</Height>
<WaterHeight>3. 4</WaterHeight>
<DaystoEmpty> 1</DaystoEmpty>
</Inventory>

- <Inventory Type="Physical" >
<Product>Clea r Diesel</Product>
<TankNumber>150 08230411-1</TankNumber>
<UserDefinedTag >40320121</UserDefinedTag>
<DateTime>1/14/2007 12:00:49 PM</DateTime>
<Volume>308.122 </Volume>
<Ullage>5805.88 </Ullage>
<Height>12</Height>
<WaterHeight>-9.44</WaterHeight>
<DaystoEmpty> 0</DaystoEmpty>
</Inventory>
- </Inventory>
</Inventorys>
</JACOData>

Jan 18 '07 #2

Bill Nguyen

Robert;

This element doesn't have children.
All I need to know is how to detect an empty element so the application
(VB.NET) can react properly.

Thanks!

Bill

"Robert May" <ra************ ****@hotmail.co mwrote in message
news:O2******** *****@TK2MSFTNG P04.phx.gbl...

Bill,

Check to see if the UserDefinedTag has children. If so, you know there's
a value supplied, if not, it doesn't have one.

Robert

"Bill Nguyen" <bi************ *****@jaco.comw rote in message
news:%2******** ********@TK2MSF TNGP03.phx.gbl. ..
>The following XML has an empty <UserDefinedT ag /(first record)
My VB.NET app got stuck here because I don't know how to handle it. It
works
fine with a vlid user defined tag (next record)

<UserDefinedTa g>40320121</UserDefinedTag>

Your help is greatly apprecited!!

Bill

- <JACOData>
- <Inventorys>
- <Inventory Type="Physical" >
<Product>Dyed Diesel</Product>
<TankNumber>150 08230383-1</TankNumber>
<UserDefinedT ag />
<DateTime>1/14/2007 1:00:49 PM</DateTime>
<Volume>308.122 </Volume>
<Ullage>2674.88 </Ullage>
<Height>12</Height>
<WaterHeight>3. 4</WaterHeight>
<DaystoEmpty> 1</DaystoEmpty>
</Inventory>

- <Inventory Type="Physical" >
<Product>Clea r Diesel</Product>
<TankNumber>150 08230411-1</TankNumber>
<UserDefinedTag >40320121</UserDefinedTag>
<DateTime>1/14/2007 12:00:49 PM</DateTime>
<Volume>308.122 </Volume>
<Ullage>5805.88 </Ullage>
<Height>12</Height>
<WaterHeight>-9.44</WaterHeight>
<DaystoEmpty> 0</DaystoEmpty>
</Inventory>
- </Inventory>
</Inventorys>
</JACOData>

Jan 19 '07 #3

Keith Patrick

String.IsNullOr Empty(myNode.In nerText)

Jan 19 '07 #4

Bill Nguyen

Thanks Keith!

This works well.

Bill
"Keith Patrick" <ri************ *******@nospam. hotmail.comwrot e in message
news:ea******** ********@TK2MSF TNGP02.phx.gbl. ..

String.IsNullOr Empty(myNode.In nerText)

Jan 19 '07 #5

Similar topics

10147

How to handle Primary Key violations in a bound form without causing and ODBC error.

by: Abhi | last post by:

FYI: This message is for the benefit of MS Access Community. I found that this prblem has been encounterd by many but there is hardly any place where a complete solution is posted. So I thought I should give back to the community by posting our findings. Thanks you all for all your help till now by posting problems and their solutions. ~Abhijit

Microsoft Access / VBA

24641

need to check if field is empty

by: Krechting | last post by:

Hi ALl, I have a code that checks if the documents in a hyperlink field are still where they should be. I use fileexist(). First I want to filter out all the hyperlink fields that are empty. I open a recordset and browse through all the fields to check for the word file. I cannot filter out the empty fields. I have tried: If Len(.Fields("Link") <> 0 then and: If Not IsNull(.Fields("Link")) then

Microsoft Access / VBA

4328

Question: Best way to handle DBNULL in datareaders

by: Ravikanth[MVP] | last post by:

Hi Alternative is check before assigning as TextBox value. TextBox1.Text =myRow==DBNull.Value)?"": (string)myRow HTH Ravikanth

ASP.NET

4238

Full dataset into an empty SQL table

by: EMW | last post by:

Hi, I managed to create a SQL server database and a table in it. The table is empty and that brings me to my next chalenge: How can I get the info in the table in the dataset to go in an empty SQL table? Is there a short way like the FILL method to get data into the dataset or do I have to read each datarow in the table and write it one at the time to the

Visual Basic .NET

886

How to handle nulls in a construcor

by: dmac | last post by:

Hi, Im real new at this so be gentle. I want to create a customer object based on the results of an sql query to the customers table, ie one object per row, and then add each of these objects to an arraylist and then on to some datbinding in a listbox. Therefore, for each row sent back by the datareader, I try to create the new customer object and pass all the data in the row as part of the constructor. But, I declared the data fields in...

Visual Basic .NET

3471

ObjectDataSource - problem inserting empty field into stored proce

by: Dabbler | last post by:

I'm using an ObjectDataSource with a stored procedure and am getting the following error when trying to update (ExecuteNonQuery): System.Data.SqlClient.SqlException: Procedure or Function 'UpdateRegistrant' expects parameter '@EMail', which was not supplied. The field value was null in the database and not changed in the FormView so is null going back into the stored procedure. I'm stumped and would greatly appreciate any suggestions.

ASP.NET

1111

value becomes empty after used once. originated in a textarea

by: gnotev | last post by:

Hi look at this code, it gets a record and prints the column values: $rs = $conn->Execute("SELECT * FROM products WHERE ID = ".$_GET); $id = $rs->Fields("ID"); $nm = $rs->Fields("name"); $ds = $rs->Fields("desc"); $ct = $rs->Fields("cat"); $tt = $rs->Fields("title"); $pp = $rs->Fields("picpath"); echo...

PHP

6219

Filtering a ACCESS Form using VBA problem empty fields

by: G04 | last post by:

Hi All, I have a continuous form with all records. For each field there is a combo in the form header and the form also contains a Toggle button "Apply Filter". When clicked, it changes to "Cancel Filter". Then an SQL string with condition meeting the criteria input in the combo boxes is built. I have noticed that when certain fields are not filled in (no space, nothing), the record is simply not shown. The empty field is not necessarily...

Microsoft Access / VBA

4053

Concatenate query results while ignoring empty fields

by: GazK | last post by:

I am hoping someone can steer me towards an elegant solution to a simple problem. I have a query result which returns an array of details about a physical building, including its address. The relevant fields are: $row $row $row $row

PHP

9703

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...

General

9565

Changing the language in Windows 10

by: Hystou | last post by:

Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...

Windows Server

10550

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...

C / C++

10317

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...

Online Marketing

9125

AI Job Threat for Devs

by: agi2029 | last post by:

Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...

Career Advice

7604

Access Europe - Using VBA to create a class based on a table - Wed 1 May

by: isladogs | last post by:

The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...

Microsoft Access / VBA

5501

Trying to create a lan-to-lan vpn between two differents networks

by: TSSRALBI | last post by:

Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...

Networking - Hardware / Configuration

4275

transfer the data from one system to another through ip address

by: 6302768590 | last post by:

Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system

C# / C Sharp

3799

How to add payments to a PHP MySQL app.

by: muto222 | last post by:

How can i add a mobile payment intergratation into php mysql website.

PHP