ADO.NET :: Dbml File Instance Retrun Null Value?
Feb 8, 2011my dbml file Instance Retrun null Value but i have puted table object in dbml file,when i cal from object that retrun Null value.
View 7 Repliesmy dbml file Instance Retrun null Value but i have puted table object in dbml file,when i cal from object that retrun Null value.
View 7 RepliesHow to update .dbml file after making some changes in the database?
View 4 RepliesI have a ascx file and dbml linq file. i need to write c# script inside the ascx file, for that i need to use .dbml file. I dnt know how to reference it in my ascx file
View 6 RepliesI am using VS 2010 I've created LiNQ .dbml file via .. Model>Add New Item>Data>LINQ to SQL Clases I've put table on designer surface using drag & drop. I've done all this from one tutorial. There Is Mapping with arrows between tables in tutorial. How can i do this?
View 2 RepliesI want to add the new tables to dbml file dynamically from another database
View 2 RepliesI am using Linq first time.
It has a Datamanager.dbml file
Stored procedure just drag here and method are created correspondence that stored procedure.
If i change any thing in any method in dbml file and drag any stored procedure here then All changes are lost.
Means if i change in a method in dbml file. And i drag a new stored procedure in that file then changes are lost and that particular method have its earlier formation that was by default generated by
dbml file.
How can i persist my changes in dbml file.
LinqtoSQL / asp.net MVC / C#
Ok, here is the problem:I drag and drop my database table into dbml, so i have new table diagram on dbml.For example, I have User table which has two columns(ID, NAME)Then something.design.cs automatically generates User class and definitions for ID, and NAME.
for example: [Code]....above code is automatically generated onto something.designer.cs then I made change on something.designer.cs :
[Code]....
then i added new column in database table named "Password" if i delete old diagram in dbml and drag new table, it re-writes whole something.designer.cs file, so i lose all codes i wrote before.I googled it and people say about Partial class, but i dont know how to use partial class.
I have a dbml file which I have added a couple of tables to. The database also contains synonyms which point to other tables in a different database. I can't seem to drag the synonyms to the design surface though?
View 4 RepliesI have an project in which data base is store in abc.Dbml file .
How to attatch the .Dbml file in sql server 2008 with proper detail.
I have a MVC project that has a Linq to SQL dbml class. It is a table called Clients that houses client information. I can easily get the information to display in a View using the code I followed in Nerd Dinner but I have added a stored procedure to the dbml and it's result set is of IQueryable, not IQueryable. I need to convert IQueryable to IQueryable so I can display it in the same View. The reason for the sproc is so I can pass a search string tothe sproc and return the same information as a full list but filtered on the search. I know I can use Linq to filter the whole list but I don't want the whole list so I am using the sproc.
Here is the code in my ClientRepository with a comment where I need to convert. What code goes in the commented spot.
public IQueryable<Client> SelectClientsBySearch(String search)
{
IQueryable<SelectClientsBySearchResult> spClientList = (from p in db.SelectClientsBySearch(search) select p).AsQueryable();
//what is the code to convert IQueryable<SelectClientsBySearchResult> to IQueryable<Client>
return clientList;
}
[code]....
this code give that solution.but if any one of the field have null(example:r.urrQuickLinkRights contain the NULL) then only it will throw error like Object reference not set to an instance of an object.
I'm trying to use below simple code for ajax postback. With file upload, neither javascript the "function startRequest" ever triggers, the file control shows null value somemore.Earlier I had Update progress which didn't work with file upload ever so I removed it. Now I just want to disable the button as the file is uploaded and its inputs are processed in the background. Once the response comes back, the "submit" button is re-enabled.But the file-upload with Updatepanel doesn't work at all. What am I doing wrong,
[Code]....
[Code]....
I am declaring a list in my class, populating the list in page load and using the list in various methods in this class. But, I get this error at every instance where I use this list in the methods. Error: System.NullReferenceException: Object reference not set to an instance of an object.
public partial class ViewBG1 : HealthServicePage
I have a table of users called Users
And a view called UsersActive that filters out deactivated users.
When I create my DBML, I drag the Users table in, then I change the property on the table to point to UsersActive.
This works well, until the DBML gets re-created.
Does anyone know how to fix this?
I've tried overriding the
[Table(Name="dbo.Users")]
attribute in a partial class but get the error:
Duplicate 'Table' attribute
vs asp2008 instance cant recognize the sqlExpress 2008 instance on my machine
I have wonder if you could try to help me with the fallowing issue:When trying to add a new sql server connection (local or remount) from VS(visual studio) 2008 express - on the add connection dialog
box: server name: are Empty!!
The vs couldn't point to any database, like dont recognize the sqlExpress 2008 instance i got on my machine.
1. Have tried to "play" with sa property's(from sqlS: Databases: security: login tree folder) and with the sql
s windows service: stop and restart
2. And so with the target db.
3.
On the services.msc
The sql server express the status is started.
The sql server agent status is disabled and don't have the option to start.
The sql server explorer status is disabled and don't have the option to start.
4. And so reinstalled the asp.
I have developed a web service using ADO.Net entity framework3.5 and LINQTOSQL3.5.
Now i want to increase the connection timeout? How should i ?
Is there a quick and easy way to update my LINQ dbml files?Right now, if I update a Stored Procedure, I need to open the dbml designer file, delete the old SP, save, drag and drop the new SP, and save again. Dont' get me wrong, this isn't "hard"... just with all the fancy new technology out there, it would be nice to be able to just right-click and hit "update".
View 2 RepliesI have MyDB.dbml in my Models folder that was created by dragging tables from Server Explorer. I'd like to make some changes to the design of those tables. Before I do that, how do I get the dbml to refresh itself?
I do expect to have to fix code where field definitions change & that's okay. I just don't want to have to start over from scratch.
i'm worried about doing this since my changes will be overwritten when the dbml file is auto generated again (as they often are).
i'm thinking of doing a partial class and writing out the same properties to annotate them, but worried that it will complain about duplicates, and the reason i can't even experiment brings me to the second part of my questions...
... that, the expandable arrow on my dbml file listing is missing, right clicking and selecting "View Code" just displays an empty partial class as below...
Partial Class FPDataContext
End Class
I'm using VS2010 RC and am just developing an MVC 2.0 app where i want to be able to use the UI Annotations such as [UIHint("RelativeDateTime")]
edit:
here is my VB version edit as an example...
Imports System.ComponentModel.DataAnnotations
<MetadataType(GetType(CommentMetaData))> _
Partial Public Class Comment
End Class
Public Class CommentMetaData
<UIHint("PostedSince")> _
Public Property DateAdded() As DateTime
End Class
I have two connection strings (both in Web.Config: CS_Local and CS_Production) for my DBML (Linq to SQL). In my Global.Asax/Application_Start I run some production preparation methods if the request is non-local (!HttpContext.Current.Request.IsLocal). Within that part, I'd also like to change the current connection string used by my DBML from the standard CS_Local to CS_Production.
View 1 Repliesi have some confusion using compund from in linq.I know the concept of compound from but in database table how can we use.can anyone give me example of it.
View 3 RepliesI have a DBML file in C#. And I have drag and drop some Stored Procedurs in it . Now I have changed some SPs. Now I want to refresh the dbml file without drap and drop the SPs. How can I do it in C#. Is there any way that the changes Made in SPs will come with out drag ang drop the SPs.
View 3 RepliesI used SQLMetal to generate a DBML file, which worked fine. The problem is that since this DBML file is so big (185,000 lines at 840Kb) it takes literally hours to load in VS2008. What is the recommended way to resolve this? I tried using a third party tool call SqlMetalInclude to break the DBML up into multiple data contexts, but that tool generates only designer.cs files, not dbml files.
View 2 RepliesWhen setting up my database, I forgot to set the delete rule to cascade on foreign keys. Now, I can't delete a user from the ASP.net control panel due to the FK constraints. So, I need to go through all my tables and allow cascade delete on all keys.Once I do this, will I need to redo my Linq .dbml? (ie: delete each table on it and drag it back on) or does it not matter?
View 5 RepliesHow do add read-only computed column in LinqToSql designer (dbml)? My existing table structure:
Name: ID, Type: int, AutoGenerate: true, AutoSync: OnInsert, PrimaryKey:
true, ServerDataType: int not null identity, Source: IDName: Name, Type: string, ServerDataType: nvarchar(100) not null, Source:
NameName: Value, Type: byte[], ServerDataType: VarBinary(max), Source:
Value, UpdateCheck: Never
I want add the 4th colum name: Name: HasValue, Type: bool --> [Value] != null