VS 2008 - Data Context Is Not Defined?
Oct 8, 2010Error3Type 'LinqChatDataContext' is not defined.
i have above error whne woring with linq
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ADO.NET :: The Query Contains References To Items Defined On A Different Data Context
Feb 21, 2011how to solve the problem? the error is on the return line and my code is
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VS 2008 - Using Profiles To Store A List Of User Defined Clicks?
Oct 3, 2010I have been using profiles to store a list of user defined clicks. A user clicks on items and it adds it to my Shopping Cart.
I have managed to enter all the info I need and see that It is there with a count but I can't pull the information back once I have entered it.
First thing I did was add code to my Web.config under System.web
[code]....
Then I created a Class called ShoppingCart.vb
[Code]...
Okay here is my VB code where I need to be able to pull the information back again.
[Code]...
So I may need to give you more information but the basics are:
I can add items to my list with btnAddS and it will update my label with the correct amount of rows (items)
Under my btnView I can iterate through the rows (items) but I can't pull back the information stored within.
VS 2008 - Context.User.Identity.Name Is Empty
Oct 17, 2010After setting the auth cookie using
FormsAuthentication.SetAuthCookie("myusername", False)
server.transfer("somepage.aspx") to open a web page.
Context.User.Identity.Name is found to be empty
But if I use
Response.Redirect("somepage.aspx")
Context.User.Identity.Name provides correct result.
I am aware of the differences between Response.Redirect and server.transfer. But exactly what is the reason behind this particular behaviour ?
HttpHandlers / Modules :: Context.Response.Output Vs Context.Response.Write()?
Jan 24, 2010I have written simple HttpModule. context.Response.Output.Write is working fine. but not context.Response.Write().
View 2 RepliesData Controls :: Display Data From User Defined Table In Crystal Reports
Apr 8, 2014I want to show the user defined Data table created at runtime in code behind C# and i want the load the datatable values in the crystal report ....
View 1 RepliesADO.NET :: Best Practices Of Using Data Context?
Feb 7, 2011Here is the code of my Repository class:You see, I use singleton here. Also you see, there is a data context as class variable of Repository class.The main reason to use singleton here is a wish to avoid using 'using(NorthwindEntities context = new NorthwindEntities())' in every function.
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This Repository is used in ASP.NET application. So only instance of NorthwindEntities (context) is used everywhere and that's why I never dispose it.So my question is: Won't this code cause connections to the DB that are not closed?
Forms Data Controls :: Find Value Between Two Defined Values?
Dec 15, 2010I have a database that tells me what contract is in effect on specific streets but between mile marker values.
For example, Main Street is 10 miles long. Contract ABC123 applies to miles 0 - 4.9, and contract 999555 applies to miles 5-10.
My user will enter the street name and mile value into textboxes, and the results will be displayed in a gridview.
Getting the Street name portion of the query is working fine, it is this mile value that is confusing me.
In my table I have StreetName for the name of the street, and for the mile range of the street the table has BegMile (beginning value) and EndMile (ending value).
How do I get the correct answer back when my user is entering a value between BegMile and EndMile?
Dispose Data Context After Usage?
May 20, 2010I have a member class that returned IQueryable from a data context
public static IQueryable<TB_Country> GetCountriesQ()
{
IQueryable<TB_Country> country;
Bn_Master_DataDataContext db = new Bn_Master_DataDataContext();
country = db.TB_Countries
.OrderBy(o => o.CountryName);
return country;
}
As you can see I don't delete the data context after usage. Because if I delete it, the code that call this method cannot use the IQueryable (perhaps because of deferred execution?). How to force immediate execution to this method? So I can dispose the data context..
C# - Hierarchal Data Context And Abstraction?
Mar 31, 2011I am creating a core library for one of our internal project. This core library supposed to contain some abstract classes and generic classes which will then be extended by specialized projects. For example, There is an AbstractPerson class with standard properties and methods for a Person class while another project will implement a Person class which will inherit from the AbstractPerson class to add project specific functionality.
Now we need to impelment DAL for this common and specialized projects.As most of operations are generic so i want to include them into core library as Repository classes. However, Repository classes need to access LINQ dataContext. Which is generated from the specialized databases. Hence there is no dataContext available in Core library to work. So how could i can create a common repository classes for generic methods which can reside in the common library.
How To Bind User Defined Data Type Object To DetailsView
Dec 13, 2010am having a class which contains user defined data type property. I have created an instance of that class. When I bind that object of that class to DetailsView it is showing all properties except user defined data type property. Here is the sample code.
public class Customer
public string CustomerName { get; set; }
public int Age { get; set; }
public Address CustomerAddress { get; set; }
}
Address class looks like
public class Address
{
[code]...
Forms Data Controls :: Both DataSource And DataSourceID Are Defined On 'DataList1'?
Nov 9, 2010I receive the error (Both DataSource and DataSourceID are defined on 'DataList1'. Remove one definition) in the following code. Could anyone help me sort this out. I do not have anything named DatasourceID that I can find.
[code]...
Forms Data Controls :: Data Context And Repeater?
Nov 5, 2010I set the Databinding of a repeater to a list of classes i.e. List<Message>, I have used the ItemCommand event before to pull out individual ID's etc based on the CommandArgument, however is it possible to make the class itself the CommandArgument instead of one of its properties, this way I have them all at my disposal.For example say I have a list of messages and within the repeater I have this:
[Code]....
However I want to pass the Message class as the argument instead, can this be done?
Data Controls :: Persisting Data Using Spring Context C#
Dec 17, 2012How To presist data using spring cotext in C# asp.net enviorn ment.
I have a class with username and user id properties.
at the time of loging i am creating class object and assinging values to properties.
Now i want to presist this object in Spring context. is it possible if Yes How?
C# - LINQ Data Context Not Showing Methods?
May 11, 2010For some reason my DataContext is not showing all the normal methods like SubmitChanges() etc in the intellisense.It also won't compile if I type in db.SubmitChanges();Any idea what I'm doing wrong? Normally I don't have this issue, I have several other projects that work fine...
View 1 RepliesDataSource Controls :: Type 'System.Data.OleDb.OleDbCommand' Is Not Defined?
May 7, 2010i am trying to export a table from access database to excel sheet but i am facing error saying Type 'System.Data.OleDb.OleDbCommand' is not defined.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim AccessConn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:Documents and SettingsUSERDesktopD0605data.accdb")
AccessConn.Open()
'New sheet in Workbook
Dim AccessCommand As New System.Data.OleDb.OleDbCommand("SELECT * INTO [Excel 8.0;DATABASE=C:Documents and SettingsUSERDesktopD0605data1.xlsx;HDR=NO;].[Sheet1] from [Table1]", AccessConn)
AccessCommand.ExecuteNonQuery()
AccessConn.Close()
End Sub
End Class
The Type 'System.Data.Linq.EntitySet`1' Is Defined In An Assembly That Is Not Referenced?
May 26, 2010I created DBML file inside DLL. compiled it and added a reference to it into a website project.When try from webproject to use the DLL I get error.
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Data Controls :: Both DataSource And DataSourceID Are Defined On GridView1 - Remove One Definition
May 7, 2015When i click for bug an aplication.
it's always show this a notification
{"Both DataSource and DataSourceID are defined on 'GridView1'. Remove one definition."}
view on browser application
Line 33: Line 34: GridView1.DataSource = dtLine 35: GridView1.DataBind()Line 36: End SubLine 37:
This is an my vb code
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Me.IsPostBack Then
Me.BindGrid()
End If
End Sub
Private Sub BindGrid()
[Code] .....
Forms Data Controls :: The Name X Does Not Exist In The Current Context?
Jun 16, 2010I have a dropdownlist as defined on a page in the following way:
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False"
C# - Server Control Within A Template Be Sensitive To The Data Context?
Jan 25, 2010Let's say a control X has a template called RowTemplate.
So X's markup would be like:
<foo:X>
<RowTemplate>
<foo:Y>...</foo:Y>
</RowTemplate>
</foo:X>
My question is: How can the Y control be sensitive to the data context? I know I can use template inline tags to get access to the data context: <%# Eval("Id") %>, but I cannot pass this information to Y because template inline tags are not allowed in server controls.
So I don't know how I could use the Object's Id (Eval("Id")) in Y.
Entity Framework - .NET EntityFramework 4 Data Context / What Is The Best Practice
Oct 2, 2010I'm working on a project which is using EntityFramework 4 and I am using the entity objects as my business objects. I ran into an issue recently where I had a context declared in a using statement in a user control. The method the statement was in returned an entity object which got used in another control. So I had to detach the entity then attach it to the new context in the other control. I would like to avoid this if possible. What I'm thinking is I would like to declare a context in the master page and then pass that to any page/usercontrol that needs it so they are all using the same context and I don't have to write all these using statements.
My questions are these:
1) is it a bad practice to declare a context on Pre_Init/Page_Load and then dispose of it on Page_Unload?
2) if it is what is the best practice for handling them?
3) if I do go the route of declaring the context in the master page what is the best way to pass that to the pages/usercontrols?
Data Controls :: Add Context Menu For GridView Cell
May 7, 2015How to use context menu for each cell and calendar in grid view?
View 1 RepliesEntity Framework 4 - Extending Context Of One Edmx File To A Context Of Another Edmx File?
Oct 14, 2010My Question is can we extend one context to another in Entity Framework 4. Following is the problem background.
I am using EF4 for developing a Web-Application. My Web Application has 3 projects.
One project is for storing candidate CV information.
Another project is for storing customer information.
Final project is called CORE. this CORE contains a edmx file that should be extended by CV and CRM.
As an example email address table can be shared by both customer (CRM) and CV. To share one table with another, we should be able to extend one context (CV context) with other context (customer context). Could some one having experience using Entity Framework share your experience with me to find whether this is possible.
We have 3 edmx files in three class libraries:
Person class library(Core) with core.edmx-Basic details related to a person(name, email) CV Class library with CV.edmx wich have CV related data(Experiance,skills) Customer Relationship management system(CRM) which have customer data(sales data...)
Then we want to use core class library edmx file(Core.edmx) with cv.edmx (basically cv tables should be able to use tables from core tables) . Same way we want to use the core.edmx with CRM.edmx for the 3 rd project
Forms Data Controls :: Operator '=' Is Not Defined For Type 'DBNull' And String Rejected
Oct 8, 2010I know that the problem is my field having NULL values. However, I don't know how to have it process the code even if the field have nullshere's my code:
[Code]....
Forms Data Controls :: No Parameterless Constructor Defined For Object When Using LinQDataSource And A GridView?
Jan 5, 2010I'm using a GridView and a LinQDataSource (Northwind database) and this error appears when website runs.
Here is my codes on aspx file and no codes in cs file.
[Code]....