473,549 Members | 2,729 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

XML reading database null value as an empty string ""

I am using the XMLTextWriter to build an XML string and pass it to the
XMLDocument. When I get the data from SQL Server, some of the values
passed to the XML are NULL in the database. When I try and run an
update to database using the same XML string, (using SQL parameters to
pass the selectsinglenod e), the XML always shows the NULL values as an
empty string "". This is then updating the database with an empty
value rather than keeping the NULL (which if the XML passed single
quotes, I assume the NULL would be there).

I use the SqlDbType to set the datatype of each parameter I pass.
I've had to set up all paramerter value types with the ConvertTo.Int32
when I have an Int datatype... Do I need to convert my char and
varchar fields so I can get a NULL value rather than the empty string?

I'm very new to all this. If you need more information to help me
resolve this problem, please let me know.
Nov 16 '05 #1
0 2254

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: aa | last post by:
I am trying to read a.php file from another PHP file using fgets() and display its contents. As a.php starts with <? the browser IE6 does not show anything, although I can see all the contents in View-Source. I tried to skip the line with <? using the following code: @ $fp=fopen("a.php","r"); while (!feof($fp)) { $line=fgets($fp);
by: Robin Tucker | last post by:
I have some code that dynamically creates a database (name is @FullName) and then creates a table within that database. Is it possible to wrap these things into a transaction such that if any one of the following fails, the database "creation" is rolledback. Otherwise, I would try deleting on error detection, but it could get messy. IF...
by: Denis Perelyubskiy | last post by:
Hello, I have a form with an input field, a textarea, having a value of "" Also, I have some javascript code, which may be reduced to the following: function validate(mycode) { alert(mycode.value == undefined); }
by: Don Vaillancourt | last post by:
What's going on with Javascript. At the beginning there was the "undefined" value which represented an object which really didn't exist then came the null keyword. But yesterday I stumbled across "null" string. I know that I will get an "undefined" when I try to retrieve something from the DOM which doesn't exist. I have used null...
by: Lyn | last post by:
I am trying to get my head around the concept of default, special or empty values that appear in Access VBA, depending on data type. The Access Help is not much (help), and the manual that I have is not much help here either. Googling has given me a little help. This is my current understanding -- I would appreciate any comments or...
by: Dana | last post by:
I am using the XMLTextWriter to build an XML string and pass it to the XMLDocument. When I get the data from SQL Server, some of the values passed to the XML are NULL in the database. When I try and run an update to database using the same XML string, (using SQL parameters to pass the selectsinglenode), the XML always shows the NULL values...
by: Jose Fernandez | last post by:
Hello. I'm building a web service and I get this error. NEWS.News.CoverNews(string)': not all code paths return a value This is the WebMethod public SqlDataReader CoverNews(string Sport) {
by: rengeek33 | last post by:
I am building a SQL statement for Oracle and need one part of it to read: , myvar = null, myvar2 = "1", myvar3 = "0", myvar4 = null, etc. I am constructing this string using the String object with the following code: theSQL.Append(" , myvar = " & FormatValue(MyClass.DB_CHAR1, Me.MyVar))
by: Jeff | last post by:
Hey I've bought the book "ASP.NET 2.0 website programming, Problem, Design, Solution" and some of its code examples is this code: protected static string ConvertNullToEmptyString(string input) { return (input == null ? "" : input); }
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...
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. ...
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...
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the...
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...
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert...
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.