i have problem white Object datasource. i have a multi-tier Application that include common layer ,DAL Layer,business logic and persantation layerwhen i add a object datasource to my page, it bring me only common layer classes . but i want use bisuiness layer classes what do i do ?
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(ie.)C-Chennai
B-Bombay
-Hydrabad
A-Andhra
K-Karnataka
It may comes any order but (cbhak) is constant. i need to bring this in query, i dont want to use any funtionHow can i acheive this result
Tag TableName FieldNameabc wc s_namelbl wc s_deslb2 wc s_prodin above fieldname(s_name,s_des,s_prod) column represent field in wc table.How can i bring this result. is this possible without using cursor. i was struggling past two days. i cant able to bring result for above.
View 17 Repliesi have 5 methods in classA. each and every methods i have open the sqlconnection and close it, instead of that is there anyway to create a sqlconnection at one time if its opened then no need to create a new connection, if its closed then we have to connect.
View 5 RepliesI am storing a custom "Organisation" object as a session variable. One of the properties of the Organisation object is "OrganisationID" (integer). I have a DataSource that requires a parameter value to run, and I want to use a SessionParameter to populate this. In a previous version, I stored the OrganisationID directly as a session variable. In that case, I could easily access it like this:
[Code]....
However, how do I now access the OrganisationID property of an "Organisation" type session variable (called "Organisation")? I have tried this, which does not seem to work: <asp:SessionParameter Name="OrganisationID" SessionField="Organisation.OrganisationID" Type="Int32" />
In my ASP.NET application I am using a lot of ObjectDataSource controls. I want to set the following three properties globally for all ObjectDataSource controls:
EnableCaching="true"
I get the above error using this code. What am I missing?
[Code]....
I have been using LINQ to SQL for quite a while (about two years). Every thing was fine until now. As usual, I created LINQ to SQL classes and built the project, then created an aspx page. However, I cannot see the DataClassesDataContext in the code behind file. It is not listed in the intellisense list.
View 5 RepliesI am using LINQ to SQL files in my class libray since every LINQ to SQL sources file is a seprate file and i have to set database connection string in each class library. Now, i have total 7 class libraires in my project how connection string be passed from web.onfg to LINQ file, so that i don't need to manually change the connection string. lke we did in asp.net 2.0 using connection string property in class file library.
How could we pass the same in LINQ's designer file.
This is the first time I have been working on databases and I am trying to insert data using an object datasource but no data is being inserted and no exception is thrown. I'm not sure where I am going to wrong. I am putting user data into session variables and inserting the session variables into the dataacess class layer and have a try and exception but nothing being thrown. Any help would be really appreciated because I don't know even where to start looking with this or how I can get the error to be thrown. Please see some of my code below to give an idea of what I am doing
Object Access Class
public void InsertCarPolicyHolder(PolicyHolderClass ph, CarInsuranceOptions options)
{
[code]...
I have a Public Sub listed in a class file that I am using to store Select, Update,etc...methods for an Object Datasource. When I attempt to configure the datasource, the Class appears as a business object, but the sub within the class is not available for method selection. (It does not appear in drop down list in wizard.)
The sub exists, so where is a good place for me to start looking for a fix? I have part of the class file listed below:
[Code]....
I'm now reading this article:[URL]But I don't understnad why this is better than just writing code, methods that connects to DB and get from stored procedore what I need.
Why is it better to use so much DataSets for all the tables and more.
How can I get common columns from two intersecting datatable inside dataset?
View 2 RepliesI can use similar code below to select a row in my database when I enter a value (username) in text box and it successfully retrieves.however, I'd also like to delete row from database based on the username i enter in text box. My code runs but no row is deleted...my code is:
SQL:
private AdminTableAdapter adminGetUsers;
I keep all of my code in codeLib.cs and use it on various ASP.NET pages. However, I still have to do the databind(); in the code behind page for each aspx file. How can I eliminate all code in the aspx file so I just have the UI in the aspxand the code and databind(); in codeLib.cs.
View 4 Replies have an object datasource that calls a web method to retrieve a set of data. That web service resides on another remote server with Windows Authentication enforced. How do I pass in the credentials required for the authentication from my web application? My code is as follows:
[Code]....
Is there anyway I can extend LINQ classes through different namespaces?Typically in my class libraries I have a namespace for each class object and their associated DAO and service classes in a folder of my project, therefore on the front-end I can only use the namespaces associated with the given page and not clutter my intellisense or load in a bunch of excess stuff.
However, I have found that upon adding my .dbml LINQtoSQL file, whatever namespace that is in, whether it's the project root namespace or a custom one, is the only namespace I can use partial class extension in.I have tried even creating a custom workspace (placing the .dbml file in a folder) and then including a using statement to that namespace and I still cannot extend the partial classes.Is there anyway I can do this? Or to have the .dbml file count as being in every namespace? I don't want to remove all namespaces but the root one either.such when I try doing the partial class from a different namespace I get the following error:
Error 1
'Id' is not a member of 'LCFVB.EntityNS.Entity'.
C:Usersshol726.UILAWDocumentsVisual Studio 2008ProjectsLCFVBEntityNSEntity.vb
10 7
LCFVB
I came across the article few days ago where somebody said that it's possible to automatically break down ClassName.Designer.CS into multiple classes.
So instead of having Customer and Order class definitions in one .CS file I'm going to have 2 .CS files: Customer.Designer.CS and Order.Designer.CS
I've been attempting to walk through the "Creating a Data Access Layer" tutorial found [URL] I create the DB connection, create the typed dataset and table adapter, specify the sql, etc. When I add the code to the presentation layer (in this case a page called AllProducts.aspx) I am unable to find the NorthwindTableAdapters.ProductsTableAdapter class. I tried to import the NorthwindTableAdapters namespace, but it is not showing up. Looking in the solution explorer Class View confirms that there is a Northwind class, but not the namespace I'm l ooking for. I've tried several online tutorials that all have essentially the same steps, and I'm getting the same results.
View 1 Repliesim tryin to create a login form.
and am receiving the following error:
Object reference not set to an instance of an object
[Code]....
and heres my aspx page:
[Code]....
Stored procedure:
[Code]....
On DBML I have two entities as Parent, Child. I am trying to assign Child class properites in a Parent.
[code]....
I am getting the following Error:
Cannot access a disposed object.
Object name: 'DataContext accessed after Dispose.'.
[code]....
i'm having trouble because when it has no return value i get the error
Object reference not set to an instance of an object.
im using a sqldatasource and i want it to query a table chosen from a dropdownlist, so i wrote the following in the .cs file
[Code]....
im recieving this error msg: Object reference not set to an instance of an object (pointing to the line containing the select command)
i don't know what's the problem, i tired a hard-coded statement and it worked fine!
I have following two classes:
public class A : System.Web.UI.WebControls.Button
{
public virtual string X[code]....
As you must be seeing the class A and B have exactly the same code , my question is how can I make a common class for it and use these two classes.
My pages work with a SqlDataSource and an Access Database but returns an error when I'm using a SQL Server database.
ERROR [42S22] [Microsoft][ODBC SQL Server Driver][SQL Server]Invalid column name 'sid'
[Code]....
