Web Forms :: How To Access The Contents Of A Column In Every Row Of A Table
Mar 5, 2011
I need to populate a listbox with the contents of a column in every row of a table. But, the table and its columns are only known at runtime. Once a table is selected by the user, I will know the name and type of the column, whose contents I need to display in a listbox. But, how do you access all rows of a table sequentially so that the contents of the column in each row can be added to the listbox?
I am able to store the current time of day in a column defined as time with the C# code as:notestable.NoteTime = DateTime.Now.TimeOfDay;The hour, minutes, seconds, and even millionth of a second is stored. But now, I need to retrieve the time and convert it into a string. I tried to use DateTime statements to accomplish this as with:
Regarding the 'nt' variable, I got an error message that said: Cannot implicitly convert type 'System.TimeSpan?' to 'System.DateTime'.Regarding the 'Hour' designation, I changed the definition of 'nt' to 'var' and got an error message that said: System.Nullible<System.TimeSpan>' does not contain a definition for 'Hour' and no extension method could be found.So, how do I access the time from a table and convert it into a string for display in a TextBox?
I want to copy data from a table[tblExcel][No.of columns:2] to another table[ev_event] which has 5 columns, 2 columns from the another table, 3 columns from user defined value
1) the default page loads, it will read the Windows Login of the user opening the page. 2) I'll check if this login exists in a table stored on the webserver.
In this Access Database, there's a 2nd linked table, pointing to another access table on a network location. Now, I want to read data from this linked table. However, at this moment I receive an error:
"The Microsoft Jet database engine cannot open the file '\<ip><shared-folder>statistics.mdb'. It is already opened exclusively by another user, or you need permission to view its data".
Some extra info:
- The network folder has read and write permissions for everyone
- the user and group permissions on both access files are set to read/modify/administer for the Admin user (on the tables I want to read from)
- IIS authentication on the server is set to "Windows Authentication" (this is needed so I can read the Windows Login from the user). All other authentication modes are disables (like anonymous, ...)
- When the error occurs, no other program or process has access to the statistics.mdb (so, it can't be locked by someone else)
Like I said before, in this statistics.mdb file, there are 2 tables. One normal table, and another linked table (pointing to a network location)
Searching for solutions, I discovered the following:
- if I don't use linked tables, everything works fine (however, I have to use this linked table)
- even if I connect directly to the table in the network I receive the error. So, I'm pretty sure I don't have sufficient rights to read from this table.
I read that not the Admin user is opening the file, but actually a user called ASP.NET. This user doesn't have the correct rights to do this. However, I'm not sure if this is true.
I have a gridviewto which I have added a templatefield based column. In that template field there is a placeholder. I am adding either a textbox or a radiobuttonlist to that placeholder programmatically.
So the problem is that when the page compiles, the contents of the placeholder get tabulated. So each listitem of the radiobuttonlist is encapsulated by its own <td> and <tr>
Now I seriously would not want the items of my radiobuttonlist to get separated as I am using the jQuery UI to style them. Not that they are not getting styled, but not the way should be.
Following is my .aspx code that creates the CPL:
[Code]....
Following is my .cs code :
[Code]....
Following is the resultant compiled code. It is inside the <td> of the parent gridview:
I am quite new to LINQ, and I am stuck with this probably basic problem, but haven't been able to find a solution, so I thought I could ask here.
So, I have this repository where I put my functions for data accessing, and now I need to write a function to get all the applicants that have applied for this particular advertisement, and their values too. Now, the values are stored in a separate M:N table, where every row consists of the applicantID,advertisementID and value. I just wanna append the value to every applicant that I show, so that it would look like a Ranking List.
However, I do not seem to know how to select just the name column from the Applicant table, and just the Value column from the ApplicantValue table.
And there's this Iqueryable interface that further confuses me...
Here's my function to get the Applicants only:
[Code]....
Now, if I try to add to the definition of the type two columns, it says that it only messes with types, i.e. one type should be passed. So I figured I would do a ViewModel and then pass it, like this
[Code]....
and then in the function I have no idea how to pass the values:
my main intention is that, the exsisting table of sql server database(.dbo) with 1000's of records, that should be import to a new access database table(.mdb).for example if we want to had a new table in db2, of exsisting table in db1 with some conditions by using "select * into New_Tabel from (select * from Exsisting_Table where <Condition>) as objectName". Here the new table is created and records inserted in one execution in db2. The same work should be done for access(sqlserver db --> Access db).Here the new access database table with given name (as string_sysdate) must be created dynamically by clicking a button (multiples time creating new table).Is there any query or c# code for sql server database to access database.
With a Gridview, if I have a boundfield or templatefiled with visible="false" I can't get the data. I need access to some data of a field, but don't want to have it showing up in the gridview.How do I do that?
I am working on a web app for an online photo album. It is the last project in Scott Mitchell's book: "ASP.Net 2.0 in 24 hours".
I am creating a page where users can enter new photo images. The functionality for uploading an image will come later. I am working on just inserting a new row into the Pictures table with an optional category, a required title and a required description.
I am getting an error when I try to insert a new row.
Here is a screenshot of the page with a shot of the dropdown list.
The Categories are user-specific. I am getting the correct values retrieved.
[URL]
There are two pretty simple database tables involved here.
NOTE: The CategoryID and PIctureID are both autoincrement integer columns.
[URL]
The page uses a DetailsView that uses a SqlDataSource that uses the Pictures table. (The DetailsView's Default Mode property is set to "Insert". The "Enable Inserting" checkbox is also checked.)
The dropdown list uses a dropdown control that uses a SqlDataSource that uses the Categories table.
When the "Insert" button is clicked the CategoryID value associated with selected (Category) Name on the dropdown list will be used along with the Title and Description values to insert a row in to the Pictures table. (If no Category value is selected, then a null value will be used for the CategoryID. This is OK because the CategoryID column in the Pictures table allows nulls.)
My problem is that I am getting this error:
Cannot insert explicit value for identity column in table 'Pictures' when IDENTITY_INSERT is set to OFF.
(FYI: I have the full version of both Visual Studio and SQL Server.)
Although I'm a total novice at building web pages, I figured the best way to learn is to do it. I've used a master page and, so far, all the basic information pages work OK.
My problem starts when I have several options for the same Content Holder. Is it possible to use clickable cells to show various *.html files in a different row in the same table.
I can show an image using a script but not a file.
<script type ="text/javascript" > function Change() { document.getElementById ('tdContentItem').innerHTML ='<img src="Images/Thumbs/Councillors.png"/>' } </script>
What I need to show is a clickable imagemap that loads the resulting pages into the same row.
I was looking for functionality in SSRS 2008 that allows the creation of a table of contents when exporting to Microsoft Word.
I have not been able to find any examples and thought maybe I would have to use a 3rd party component. Has anyone had experience doing this in SSRS and if so could you provide an example.
Let's say I have a table (Table1) with three columns (Col1, Col2, Col3) and two rows. Let's say I have a button on a page. I want to send the contents of those two rows in an email in the Click event handler of the button. Here's the SQL framework I've got: [Code]....
what can I do when my all database table's name into dropdown list & when i select or click the table name from dropdown list display the whole field into the gridview dynamically.
I have a page where I would like to collect information about x number of users. I have a control where you enter in the number of users and based off of that number, I create a dynamic table with a row for each user. Each table row has textbox controls that I would like to retrieve the value from on postback. How can this be accomplished?
At first I got an error that the user did not have permission to read the config file (web.config). So I gave NETWORK SERVICE and IIS_IUSRS read on the website folders.
But now vistors can not access images and other static content from the Content folder without logging in. Aspx and .ashx content works however static content is redirected to the login page.
I'm currectly tryin to access a specific value in my database in a specific column. I'm tryin to use the primary key of the table to access the actual value in the row of that ID.
The current code:
[Code]....
Just iterates through the table and looking for any row with the boolean 'checkin' value is True, then it takes the 'id' value of that row and stores it into an array. Is there a way that I can access a another entry, and only that entry, in the table with the 'id' stored in the array?
Like if my data base contained and int, primarykey, `id` value, a boolean, `checkedin` value, and a `time` value, is there a way to access, lets say, the row with `id` equalling 3 and and the checkIn value from that row?
