ADO.NET :: Parameters And Null Values / Showing In Database (Empty Like "Space") In Text Fields
Sep 27, 2010
I was develop an application (ASP.Net) Using (VS.Net C# 2010 & SQL Server 2008)
And I was applying (3-tyer Basics) and I'm not using wizard forever in my application.
The problem is :
When I try to passing the parameters to database, some fields I don't type it But it's show in database (Empty like "Space") in text fields and (01-01-1900) in date fields
Although it's must be (Null) .
How I can pass parameters with Null Values for the fields that's not typed?
View 14 Replies
Similar Messages:
Jan 15, 2010
I have a sql database that on some field will have a empty string/field. I am using a Datalist to display my results. How do I not make the labels that are empty not display? Currently if the field is empty it will leave a space there which my goal is if the field is empty do not leave a white space instead move the other colunms up.
View 2 Replies
Jan 28, 2010
How do I check if my value is empty AND Isnull? I need to check for both, using ISNULL is not enough because the data can change just so that it is empty.
how I can change my query to accommodate this?
[Code]....
View 5 Replies
Dec 6, 2010
I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?
I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.
View 3 Replies
Aug 29, 2010
I have a web form and I have a user control on it. This user control contains a panel with some user properties that are to be stored in a database. So far nothing fancy. The user control itself contains a panel and is working fine (all code to retrieve and store the values is working).
I used the default settings of creating a user control and one of them was AutoEventWireup=true. This works fine because I also have some dropdown boxes (and other fields) that need to be filled with values from the database and that happens in the Page_load event.
The panel specifies the 'DefaultButton' which calls a method when clicked to save the values after the user has changed them.
On this click the code of the method is called, I confirmed that, but I found out that the values of my controls on the user control (for example the Textbox control) are empty. As a non-ASP.NET developer I couldn't figure out why. So I changed some settings like AutoEventWireup to false.
Off course this resulted in my dropdown boxes no longer to be initially filled, but my surprise was big to find out my controls actually contained the values the user typed in.
Logically I need both the values and the dropdowns filled, but for now it seems one or the other.
View 3 Replies
Jan 30, 2010
For coonverting Linq to DataTable I am using the following Extension Method(Taken from Stackoverflow)
L[code]....
The Extension Method creates XML file.But for null values no element is created in XML file.Say if Commission field is null then commission element is missing in Xml generation.
I want to insert element with empty string for null values (ref type) and (0.00) for decimals and (0) for integers. where do i need to make change?
View 1 Replies
Sep 16, 2010
I tried using this and am concatenating the fields together. It does not appear to be working. Here's what I have.
View 7 Replies
Mar 26, 2010
I have a simple WCF service that returns the time from the server. I've confirmed that data is being sent by checking with Fiddler. Here's the result object xml that my service sends according to fiddler.
[Code]....
Literally the only difference is the namespaces within the application. But still the values being returned are null, empty or a .NET default.
View 1 Replies
Jun 1, 2012
If I have JSON like this and pass it to the engine I am using to create a PDF file, the word "null" appears on the PDF. This isn't really my example, but I googled "json replace null empty string" and this was a hit, which is a good representation of my data, also:
{
"relationship": {
"type": "relationship",
"id": null,
"followed_id": null
}
}
We use a rendering engine that creates a PDF from a fixed template and variable data in the form of a json string. But our customers don't want to read that the id is "null", they want to read that the id is blank. In my C# program, the json is just a string, so I can easily do something like this:
jsonString = jsonString.Replace("null,", ",");but the issue is I can't replace null-comma with a comma, because then it's invalid json.
how to I make the rendering engine *and* my customer both happy?
View 18 Replies
Mar 14, 2012
this is my sql query and its work fine in my code but it only check ParentDeptID IS NULL it not working when ParentDeptID field is empty how can i check it
("select DeptID,DeptName,(select count(*) FROM HrDept " _
& "WHERE ParentDeptID=sc.DeptID) childnodecount FROM HrDept sc where ParentDeptID IS NULL ", _
objConn)
View 1 Replies
Jan 24, 2011
I have a problem with DataSet.GetXml() in ASP.NET 4.0:
First I populate the dataset with some tables.
Then I run the .GetXml() method on the dataset and some XML is returned. The output of this method is not want I want it to be, however.
The desired result is this:
[code]....
How do I stop this from happening? I mean, how do I stop the cell from being included at all?
In ASP.NET 1.1 the same code is used and the desired output is returned. This means that it is probably some new thing in 4.0 that I have to switch on/off. But what?
View 1 Replies
Feb 20, 2011
Is there one simple test that a person can do that covers all options where there could be a null, or "" value. When I google, I see so many options. I see:
if txtBox1.text IsNot nothing
if txtBox1.text.toString isNot nothing
if txtBox1.text <> ""
if txtBox1.text.toString <> ""
if isNull(txtBox1)
Is there on test that can cover them all?
View 10 Replies
Sep 25, 2010
Is there an easy way to reset all the fields in a form. I have around 100 controls in my asp.net form and there is submit and reset buttons.
How do I make all values in the fields null when user hits reset button?
View 3 Replies
Jan 21, 2010
here is my code for selectiong some records from db table
string strSql = "select * from mtblNBD where SentTo=@SentTo and InternalStatus Is NULL order by DeadLine desc";
SqlCommand com = new SqlCommand(strSql, con);
com.Parameters.Add("@SentTo", SqlDbType.NVarChar, 50).Value = (string)Session["uname"];
here I am using parameters for SenTo field but not for NULL so it is ok... or should I use parameters for this field where value is NULL , if yes then how can I use parameter for this
View 8 Replies
Mar 22, 2010
How would I convert an empty textbox.text to null when updating/inserting using an SqlCommand? I've got this to populate the textbox:
If IsDBNull(dr("data")) Then
TextBox1.Text = ""
Else
TextBox1.Text = dr("data")
End If
Here's the SET of the SqlCommand:
[Code]....
View 5 Replies
Jan 18, 2011
I have a form and stored procedure that inserts the data from the form. It works fine except that if a field isn't filled in it doesn't insert a NULL into sql it inserts "".
I've tried a few different ways but none seem to insert NULL, the one below still inserts "", can anyone point me in the right direction.
Here is the required part of the code, if you require more just let me know.
[code]....
So if I enter nothing into address1 field it should write NULL to screen but it always writes NOT NULL.
View 4 Replies
Apr 6, 2010
Have created a Webform based on a master page.The code executes OK and sends data to the database, but inserts null values for all entries except the GetDate.
If I use exactly the same code in a new webform which isn't based on the master page, it inserts everything correctly.Here is a snippet from the form which uses the master page: -
<%@ Page Title="" Language="C#" MasterPageFile="~/SpeedDateMasterPage.master" %>
<script runat="server">
private void AddToDatabase(object source, EventArgs e) [code].....
View 10 Replies
Jul 21, 2010
I just hit the same problem as described here: [URL] - GridView paging with ObjectDataSource. I see the column headers but no data, and I know for a fact my method returns a DataTable with data in it.
View 1 Replies
Jan 15, 2011
i have assigned few values to 10 dynamically created text fields
eg : string abc = "<input type="text" id="field"+i+" " />";
above string i have displayed in front end thrgh response.write i.e by assigning string abc to viewstate. also i am tryin to genetrate above input fields from database , so i have to make it dynamic in a loop. so when a user updates any of those dynamically created fields i need to retreive those values in a loop
something like this :
field1.text , field2.text ......so on till fieldn.text ....i want to assign these values to array
like :
string[] arr1 = new string[nooffields];
arr1[i] = fieldi.text;
View 2 Replies
Jun 11, 2010
I have a number of nullable DateTime fields (Entity Framework model), and in my MVC view, I want to display custom text when the value is null. I would normally use the C# ? or ?? operators, but these can't be used unless I make all output occur in a response.write. Also, I need to handle existing DataAnnotations (like format string). It's all pointing to a helper method, or an extension method on Html. I am hoping there is a DataAnnotation attribute that I missed that covers this scenario.
Is there a way to use the <%: operator and have custom text for null values?
View 3 Replies
Dec 11, 2010
how to disabled and uncheck the checkbox values from database fields..if i have entry in my database records as :Name Seats DateSumit 1,3 11-Dec-2010Sanjeev 2,4 12-Dec-2010Manish 1,3,4 11-Dec-2010I want on page load event the default date for todays is 11-Dec-2010 then checkbox1, checkbox2, checkbox3, checkbox4 will be disabled and unchecked state for 11-Dec-2010as you see on the above database structure the seats for 11-Dec-2010 is 1,2,3,4 so the chekbox1, checkbox2, checkbox3, checkbox4 will be disabled..
View 1 Replies
Mar 11, 2011
I am trying to populate database fields by reading text from a Word or PDF document. Like if a user uploads a file then certain text from that file can be usd to populate a database table.
View 1 Replies
Jan 30, 2011
I have a database containing various datafields that I need to display to a user based on their userID (which is assigned during login).
I need the data to be displayed in a specific format. i already have a table with input (text) fields and select fields created in html.
I need to know the easiest way to populate these fields with the data found in my database in an MVC fashion.
View 2 Replies
Mar 26, 2016
I want to hide 'image55div' div if [imagepath5] COLUMN is null how to achieve it!
below is code.
<div id="image55div" runat="server"> </div>
private void DisplayArticle(string id)
{
SqlDataAdapter da = new SqlDataAdapter("select * from activity Where id=" + id, con);
[Code].....
View 1 Replies
Nov 3, 2010
my table field allows null values. but my code below does not work unless a value is assigned to my variable even though the glable variable is initialised to 0; tried the DBNull.Value - still, it gives me error as the table in question is linked and expecting a value.
[Code]....
View 10 Replies