vs2010 (express)
.net 4.0
SQL 2008 (express)
MVC 3
C#
Entity Framework
I'm curious as to whether there is a well known way to add a column to a SQL table as a global change in MVC 3.
"Global change" referring to adding a column from database to UI... can someone please outline the fundamental steps.
(i.e., 1. add column in SQL table. 2. update .edmx (replace relative tables) 3. ...)
If I am going to use the asp.net membership and roles, the asp.net database includes an aspnet_Users table that has the userid and email address. If I have custom fields is it best practice to maintain a separate usert table and link on user id or to add fields to the aspnet_Users table?
View 1 RepliesI 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 wanted to ask what is the best practice to manage width of the radGrid.
For my application most users are running 1280 x 1024 so I would be happy to set my overall grid width to 1100. However, depending on the form in use, I sometimes have horizantal scroll bars. To solve this, I have been playing with the width of the grid, and also I have played with setting the itemstyle-width for one or two columns. Sometimes I accidentally get it right, and sometimes it is not quite right.
What is the best way to manage this? Do I set the grid, and then all columns, or just the grid, or just the columns? I guess there is a best practice, so just wondering how you handle it,
I want to track equipment between three types of allocations. A piece of equipment can be allocated to an employee, to a customer facility or to a warehouse.
I have an equipment table, employee table, a customer table and warehouse table. Warehouse is where equipment is temporarily held and shared between multiple employees, it is a holding area.
Obviously each equipment item can only be allocated to one employee, customer or warehouse.
My original thinking was to make a table for EquipmentAllocations where it linked the EquipmentID and the id of the employee, customer or warehouse (all guids).
Eventually I will need to query the equipment to see where it is located/allocated. I will also need to query the employees to check what equipment is allocated to them.
I am trying to figure out the best way to handle this and I am looking for some guidance. I am sure many of you have had situations similar to this that you could draw upon to offer up some advice.
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
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 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 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.
View 1 RepliesI would like to be able to format my IList<T> so that the results appear in 3 Column Table, This is similar functionality to ASP.Net Repeater control in Web Forms by using the RepeatColumns Property
For example if the Data were to look like this
"Phil Hughes"
"Andy Petite"
"CC Sabathia"
"AJ Burnett"
"Javier Vazquez"
The Rendered Results would appear as
<table>
<tr>
<td>Phil Hughes</td>
<td>Andy Petite</td>
<td>CC Sabathia</td>
</tr>
<tr>
<td>AJ Burnett</td>
<td>Javier Vazquez</td>
<td></td>
</tr>
</table>
In my application i want to compare data of two users from database table using linq.
lets say i have ten columns in UserMaster table.
Now based on the comparision i want to display result.
Like is 10 out of 10 columns matches for those two users result will be 100,if 9 columns matches then result will be 90 and if 0 matches thn result will be 0.
i dont want to write if else for somany time.
I am new to linq.
I'm currently switching over to ASP.NET MVC and have ran into a problem. I have a list of items (e.g. a list of names) that I would like to display in a table. I would like to display it down a column, before starting onto next column.
I have tried a nested for loops for mark up of <tr/> and <td/>, and am getting undesired results.
I have a number of tables in the database and i have a column value as "abc" coming from one of the tables in the database, Now i need to find the table name from where this column value is coming?
View 8 RepliesMy attendance table structure as follow
EmplID AttendanceDate Atten_Type Atten_Taken
it mean it has lot od data like below with differnet dates
E1
2011-02-21 00:00:00 CL
1
E2
2011-02-21 00:00:00 P
E1
2011-02-22 00:00:00 CL
E2
2011-02-22 00:00:00 P
E1
2011-02-23 00:00:00 CL
[code]...
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].....
i have a data table which is filled from data base, now i want to add new colum with name "Actions" and i want to add value for this column "Split". how can i do this.
View 2 Replieshow to access the first row and first column of a sql table
View 6 RepliesI would like to be able to use the ASP.Net Repeater control to create an HTML Table that has three columns and as many rows as necc.For example if the Data were to look like this
"Phil Hughes"
"Andy Petite"
"CC Sabathia"
[code]...
I know there is a way to get all the column name from a table, but that is not what I want
I want to get only a few column name from the table, is there a way to do this?
Let say, table A has three columns that is A1, A2 and A3, I only want A1 and A2 column names, again, can this be done?
BY the way, I am using SQL Server 2005 with asp.net application.
I've inherited an ASP.NET web app, and I am coming up to speed on being a DBA as well.Before I break anything, if I add a new column to a table, is there any chance it will break an existing page that does CRUD operations? The new column would not, of course, be part of the existing operations and grid controls, and if I allow it to contain a NULL (so inserts don't require value input), will I be OK?I realize that deleting a column could certainly break things. But adding a nullable column would seem to be harmless enough. (I think).
View 2 RepliesI have Data table Populated from database with Column Month which contains values .
and i have an other Array list which contains the Months from 1 to 12.
Now i have to insert the missing months into Data table from Arraylist.
how i do that because i have to shown the 12 months on report .
