I'm populating a DataSet from an Sql query. I fetch some extra columns in my query as i need them to for further queries. I delete those columns after im' done with them, but i get a Column "columnname" doesn't exist in "dataset" error when i try to bind the DataSet to a GridView.
what could be the cause?
Edit: here's the code
The actual error message: "Column 'BID' does not belong to table results."
[code].....
However has anyone ever seen a situation where, when you try to access the value of a column in a DataRow, you get the error "Column... does not belong to table.." when, in fact, it does?
The column name in question is called "ByWeight". I am wondering if either that, or maybe one of my other column names, is a reserved keyword and that's causing/masking this error.
If I look in the locals window and expand the DataRow, one of my columns is DBNull - by that I don't mean that the column value is DBNull, I mean the actual column itself is DBNull so it doesn't expand. I think there's a clue there.
I have developed an application in asp.net 3.5 and SQL server 2008 and hosted in IIS 6.0 on machine having Windows Server 2003 OS for testing. It is running good for exact 7 users, but for more than 7 users it gives error "Column 'ColumnName' does not belong to the table". And this error comes on any pages frequently. It is also running on local machine but gives error after hosted on IIS. Here is the page structure and code files for your reference.
[Code]....
I run a web site with VB.Net and Sql Server, at a web host (so I use one instance of their Sql Server db). I now get this nasty message when trying to access the web site: Column 'kryptotext' does not belong to table tabellen. I have seen this before (but with other columns mentioned), and when I spoke to the tech guys they said that the server gives up after five (or so) invalid requests. The old problems I had were due to the fact that I had used Application variables - at least the problems appeared when I added the variable and diappeared when I deleted them.
This time, I have done very little. I ran a new check when some items of a gridview were databound, and if a condition was ok, then a mail should be sent and an update take place in the db. For now, this will not be true, so the new code doesn't fire, and I have now reverted to the old code anyway. I got htis message this morning, and then it has worked the entire day without me changing the code at all, and now it stopped working again, so to me it seems as if it's either not my code's fault, or I somehow flood the db server with requests (but the web site is new so there are really no users yet). One more thing I have added: I imported the Net.Mail namespace to the baseclass I'm using for the aspx pages, but I can't believe that has anything to do with this.
I asked the tech guys again, and the server has been working the whole day. Here's the web site: [URL] I am able to connect to the admin part of the web site, so it's just the public web site itself that doesn't run. What should I do? Edit: Now, 30 minutes later, it works again. I haven't done anything, in fact I had dinner now.
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
[code].....
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:
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?
How to handle this error
"An explicit value for the identity column in table 'UserActivation' can only be specified when a column list is used and IDENTITY_INSERT is ON."
i have a table which showing the food data from my Model, including Name, Amount, Storage and Expiry Date. I wish to either:
1. Let user click on the column header and sort the column they want
2. Or default showing the food which almost expired on the top of the table
[Code]....
This results in the whole table when it should not. What am i doing wrong?
I need to implement a search page where a user will be able to specify some search criteria and perform a search. It's a requirement that the results are displayed on the same page, beneath the search criteria.
Here's the code for the controller class:
[Code]....
For simplicity, the table string above is hard coded but would be constructed dynamically in the real code.
I also have the following form defined In the body of my html:
[Code]....
Finally, I'm using JQuery to hijack the submission of the form and to request the html for the table:
<script type="text/javascript" language="javascript">
$(document).ready(function() {
$("form[action$='GetTableData']").submit(function() {
$.post($(this).attr("action"), $(this).serialize(), function(response) {
$("#tablePanel").html(response);
});
return false;
});
})
</script>
I'm fairly new to ASP.NET and MVC but the thing that slightly bothers me is that the html is generated in the code-behind for the view.
I just want to put together a SQL statement and load all my results into a table. I don't care about sorting or specifying which columns should be shown.
My SQL Statement changes what columns are returns, and I just want the results to show everything. I don't need bells or whistles at the moment - just all the results loaded into a table, every time.
I want to fetch data from two table buut i m realy confused.
just i want recent two users in my site but problem is there that two users releted information stored in other table .
I also used join query to fetch that data but proper result not get .
[Code]....
i want to insert the result of that query into nother table in my database. please help me find a way to 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.)
Here is my source code for the page:
[Code]....
i have 3 tables which are Table A(a Id,b Id),
Table B(b Id,a Id,c Id),
Table C(c Id,b Id)
How can i select Table C column by using table A?
I have an asp.net usercontrol (ascx) that inherits from an abstract class (that inherits from a UserControl). My Project is in a 3-tier architecture (DAL -> Bll -> UI/Views). Currently there are no class files in the UI layer (other than the code-behinds). Which layer should I add this abstract class to?
View 2 RepliesIs it possible for an ASP.NET Validation Rule to belong to multiple groups? I'd like to validate the same control in different ways based on what mode the form is in using a single Validator. For the purposes of this question, the modes are Simple, which requires fewer fields, or Complex, which requires more fields. I know I can write CustomValidators (which I have done in the past), but I'd like a simpler solution.
So, I'd like to combine the following:
<asp:RequiredFieldValidator ValidationGroup="Simple" ControlToValidate="Name" />
<asp:RequiredFieldValidator ValidationGroup="Complex" ControlToValidate="Name" />
I want to create a temporary table where the columns of that temporary table needs to be dynamic (those columns needs to come from the rows of another table)
View 6 Repliesi have table that trace views of my page. every row has the id, date view (dd/mm/yyyy hh/mm/ss) how can i distinct the data into gridview (or something else) and display only the days (01/03/2011, 02/03/2001, 03/03/2011) and to sum the numbers of views (01/03/2011 1,290 views, 02/03/2011 867 views.....)
View 7 RepliesI am displaying some query results in a div (table format). Is it possible to do pagination in vb.net in a div . Because i am not using any list view or data repeater or data grid control.
BID StartDate EndDate BidAmount Status
1 10/12/2010 14/12/2010 100000 Approved
2 05/07/2010 07/07/2010 500000 Pending for DAC
I want to display only 10 records per page.
I need to create a selection table, i.e., a table with names and checkboxes.
When some checkboxes are selected, based on selections made on checkboxes i need to generate results(not from database), results are like different name of Is there some kind of architecture for this?
for example, we have name of columns as has legs, has feathers, has wings, can swim, carnivorous,herbivorous, etc
and based on selections i would say animal or bird or fish or amphibian, etc.
Why do i get an error for the loop ? This piece of a script is in a asp file for reading my csv .
it needs to read all my rows in the csv ,, like now it gives me expected loop error
if i put it under arrRows = split it gives me only the last entry of the csv..
Do Until oInStream.AtEndOfStream
sRows = oInStream.readLine
arrRows = Split(sRows,",")
%>
<td><div align="center"><%=arrRows(0)%><br></div></td>
<td><div align="center"><%=arrRows(1)%></td>
[Code] ....
Hardware involved:
SQL Server 2000
Microsoft Server 2003 with IIS6 [code]...
The goal, from internal department (user) perspective:A department wants to "upload" an excel spreadsheet of data (product, term, rate, etc) to SQL (this will be from the internal network). The data is then saved to a webpage location for that department to view and approve. Once "approved," this data is displayed on the live web servers (public-facing website which is two load balancing servers).
Bonus:
The .NET application/SQL Server can send an email to the department reminding them to upload the latest rates (each weekday morning, then each Thursday afternoon) if rates have not yet been "approved."
From the development perspective, this is my general idea, but I may be wrong.There are three spreadsheets, each with one tab. The first spreadsheet is uploaded, and the .NET application puts it in a SQL table. I then need to display this table of data on a .aspx page for the department to approve before the .aspx page is pushed to the live web servers.
First, I need an interface for this department to upload Excel files. I need this application to save the data to SQL and display it in a .aspx page so that the department can look it over and approve it. The department needs a way to "approve" the page, and this action will push the data to the live web servers. Will this involve SQL data transformation services?
I want to set the coulms size of all the columns in the table in the DB based on the maximum width/size of one of those columns of that particular table That is if I have three columns Name(nvarchar 50), Address(nvarchar 70) and Description(nvarchar 100), then I want Name and Address to also be nvarchar 100, can anyone give me the code for the same in VB.
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