I am tryin to get records where certain fields are empty, but the following sql does not give me correct result.
SELECT [specimen Type], [Year], [Lab Number]
From [PET Fish] where
ltrim(rtrim([Diagnosis])) = '' or
ltrim(rtrim([Results])) = '' or
ltrim(rtrim([Sign out Date])) = ''
It should return all records, but it returns none.
-7vf- I write a program by c# to check and retrieve data from database
The problrm:I have one table(1), I want to make update for that table(1) that is by compare the one column in table(2) with the right side from one column in table(1), so if there is any similarity it will retrieve the data and if there is no match just it will make the record empty(null) "the data type of retrieving columns: number 'double'", but the problems is:
I try to retrieve 11 columns, 7 of them are empty .the program run with out error ,but it will retrieve some records with full data 11 columns, but some of records has only 5 columns have data and 7 columns are empty (these records when I run the program did not retrive any columns, it give me empty records!!)
this is the code :
while (or.Read())
{ or.GetValues(field); OdbcCommand oc2=null;
[code]....
I want to retrive all data which are empty or null and all data
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 RepliesHow 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?
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I have a FormView with a byte field. The field is not required and if I don't enter a value, I get an error that the value is not acceptable in a byte field. I can replace the null value with 0 but I would prefer not to.
What is the best way to handle this so that if I do not enter a value in a byte (or int16) field to insert a null value (or whatever they do in the ASP.net).
how to display 10 empty records in a grid view while in page load?
View 1 RepliesI have a Formview control that has several lookup fields. The value is an int ID but the textfield is the name, e.g. value = StateID, displayed text = StateCode)
If the user leaves that field blank, I get a Server Error when attempting to Update: Failed to set one or more properties on type orgOrganization. is not a valid value for Int32.
In the table for the LinqDataSource which provides the data for the Formview, all fields except the text field OrganizationName allow Nulls.
Does anyone know why this might be happening? I tried a test which just has the numbers, no lookups, and get the same result.
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.
i want if there wasn't any thing to show in datalist it show some text in datalist like
"there isn't any thing to show" how i can do it?
I have to display about 1000 records in a list or grid.
Each row will have about 5 fields/columns,
eg.
empID
empName
empAddress
empPhone
empDepartment
The list or grid must allow the user to select a row.
In addition, when a row is selected by user, the address will be shown under the list or grid.
When I Login the page using username and password  and then click the logout button and after again click Login button without entering username and password it will be login,I want to show error
View 1 RepliesI have a SQL database. I am getting a datatable from SQL. In SQL Query the table is having null values in the output. But when it is coming to the front end, the null values are replaced by empty values.
So in the front end in the datatable i am having empty values in some cells. I am trying to insert this datatable into access. For this i am using following code...
OleAdpData.InsertCommand.Connection = OleConn; // OleConn is the OleDbConnection
OleAdpData.InsertCommand.Connection.Open();
OleAdpData.Update(dtData); // dtData is the datatable
OleAdpData.InsertCommand.Connection.Close();
It is inserting the datatable to access database. But it is inserting the empty spaces as present in the datatable. I want to insert NULL into the cells in access datatable where the cells are empty. Where should i add my logic for this.
as we all know
Dataset ds=new DataSet();
gridview1.datasource=ds;
when the dataset has no reccrds then the grid view will not displayed.
I need to show the grid with 10 rows with no details means empty records.
How to set letter NO in gridview is empty record...
View 1 RepliesI 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?
I have a detailsview in insert mode. I want to prompt the user to enter data in all fields, if left empty. Could someone please find a few minutes to show me how to do it?
View 2 RepliesI want to create empty Gridview so that user can add values to that gridview . I dont want use any data sourceÂ
I want to gridview with empty row and text box so that user can add values to the gridviewÂ
I do not know if this can be done but lets say have a model like the one below:
I am trying to do this:
<%= Html.RadioButtonFor(model => model.B.height)%> -----> Does not work. Height is not a property
But B is a collection. How do I get access to the fields in table B in the View?
***********************************************************
Table A
Qid
name
age
Table B
Wid
Qid
gender
height
i want to know how to access the template fields in a detailsview....i am not able to access them by their ID's
View 5 RepliesI have a listview control bound to an SqlDataSource. As part of the formatting I want to add a title to the data returned from my database. For instance if the data base returns a phone number I want to add 'Tel.' first. However I do not want to diplay this
title if the datafield is empty. Here is what I have done so far.
<ItemTemplate>
<asp:Label ID="BusinessLabel" runat="server" Text='<%# "Tel. "+Eval("Business") %>' CssClass="TeleStyle" />
Or This:Tel.
<asp:Label ID="BusinessLabel" runat="server" Text='<%# Eval("Business") %>' CssClass="TeleStyle" />
</ItemTemplate>
Business is a phone number. If the data field contains a number I get: Tel. 1234 123456. If the field is empty I get Tel. If Business is null I want nothing dsplayed, how do I do this?
How to Convert empty string to Null value - Insert into a DB
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how can i get and set crystal report formula fields from c# code behind, i use this code, double sum=reportdocument.datadefinision.formulafields[1].text but it get formula text not value
View 2 Repliesi need to retrieve all the records present in a database
iam using the following code but it fails to show any record
Dim con As New System.Data.OleDb.OleDbConnection
Dim myPath As String
We have a page that contains a loginView and in the LoggedinTemplate is a FormViewTemplate. The display part works fine.
Not all fields are databound due to special hadling needed on diaplay anu onUpdating. The display part works fine. However in the onUpDating procedure. I can't figure out HOW to gain Access to the field content in unBound FormView Fields. I need that to determine and set the output fields that need special handling.
I tried from the formView
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I am working on a search engine application and was hoping there was a way to take multiple fields from the database and combine the values (separated by spaces) into a single virtual field, without having to actually add it to the database
Let's say I have 2 fields, FirstName and LastName - can I take these 2 fields and combine them into a Name field where Name = FirstName + " " + LastName
What I'm going to be attempting has a lot more to it than that, but if I can get an example on how to achieve that, I can apply that same principle on a larger scale
ways of doing this with AND/OR, I want to combine multiple fields into a single field