I am using GridView & EntityDataSource w/ eSQL SelectCommand. Assume i am using AdventureWorks Data model, how can i select more than one table? For example (eSQL),
[Code]....
But above code will make error , right now, i only can replace cat.*,sub.* to VALUE ROW(cat.CategoryID...[All Cat column] , sub.SubCategoryID.....[All SubCategory Column]) Which is very long command text.
I have three table like above, table C is mapping table which has foreign key of Table A and B.How can i select and insert data in Table C using Entity Frame Work?
View 2 Repliesgetting data from multiple Entities models into an MVC controller. Most of the examples I have seen for using EF in an MVC2 app only use a single entitiy.
I have just started using MVC2 in C# using the Entity Framework models (CIOps.model) created from an SQL database. I can create the controller and views using single tables of the model in MVC2, but I just cannot get my head around how to get data from multiple entity tables into the controller (similar to joins in T-SQL). I have included an example below of the controller code that works with a single entity table, tbl_tours (tbl_tour in DB).
Could someone please illustrate how this code would be changed to include additional columns from FK tables in addition to tbl_tours columns. E.g. the clients name from the tbl_clients, the coordinators name from the tbl_employees, and costs from tbl_costs entities? Is it possible to do this directly using the EF model entities/classes that are already created and not use LINQ, POCO, Repositories, etc.? The FK relationships are already in the EF models. I have included the whole controller code, but I just need a few examples of how to join the multiple entities, not rewrite every CRUD function function in the controller. I think this will get me over the hump in using EF in an MVC2 App. Also ignore the fact I am using the home controller, this will change in the application.
[Code]....
[Code]....
When I want to get the output values its okay but I also want returning a table as a result data.But Datareader has no rows.is it possible if I want a returning query result and multiple output values togather ?I wrote a test above.I can get output values as sqlparameters. But Datareader attached to a Gridview is empty.can you detect whats wrong here and it doesnt return a query result.So stored procedure is not standart or ı am doing something wrong.this doesnt raise any exception.but not returning any data.
[code]....
The gist of the problem is that we have an alumni table (one record per person) and also a couple of other tables (one to many) that have degree info and interest info. In a search screen in our app you can search for criteria that spans all three tables (there are actually more fields and tables than shown in the example below but I am trying to keep it simple).
The code below works (properly returns people without degrees for example) but still feels a little clunky or over-engineered to me. Are there easier ways to do this? NOTE: I have been through quite a few iterations/approaches to making the correct data be returned.
[code]....
i have 2 table missions and missiondays with a relationship 1..n
I want select all missions that has all missiondays with an attribute called "visible" = true
I've tried with:
db.TDP_Missioni.Include("TDP_MissioniDestinazioni").where(p => p.TDP_MissioniDestinazioni.visible == true)
But there is an error. Indeed from p.TDP_MissioniDestinazioni i don't see the table's attributes. I think it's because the relationship is 1..n.
I'm pulling all the objects from an entity in my database
Dim dbConfig as New housingEntities
Dim update_query = (From p in dbConfig.Configs _
Select p)
Then, I want to individually access the rows and perform updates to them...For example, if I just needed the first row I could go like this:
update_query.First.timeValue = txtFRRSD.Text
dbConfig.SubmitChanges()
Now, I don't know how to code this, but here is pseudo what I'd like to do:
update_query.Item("FRRSD").timeValue = txtFRRSD.Text
update_query.Item("FRRCD").timeValue = txtFRRCD.Text
update_query.Item("SORSD").timeValue = txtSORSD.Text
update_query.Item("SORCD").timeValue = txtSORCD.Text
dbConfig.SubmitChanges()
Does anyone know a way to do this or something like this?
I have an inventory page with a gridview that shows 1 item per record, each item starts with a checkbox in the gridview. Currently users can select multiple records and hit the order button and everything has worked well. Now I have multiple pages in my gridview, and if a user selects a few records from the first page, and then goes to the second page, all the records (checked checkboxes) disappear from the first page.
[Code]....
how can i select a record from A table and insert into B table using linq?
View 2 RepliesI have one table named 'dbo.ac_Products' Within this table there is a column named 'ProductId' There is also another table named 'dbo.ac_CatalogNodes' Within this table there is a column named 'CatalogNodeId' and a column named 'CatalogNodeType'
I need to delete all the rows from 'dbo.ac_Products' and 'dbo.ac_CatalogNodes' where 'ProductId' = 'CatalogNodeId' and 'CatalogNodeType' = 1
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 a stored procedure that receives 2 parameters and returns 3 columns.
Here is how I added the SP:
1. Added SP to entity model (.edmx) via update model from DB.
2. Did a Function Import -- selected my SP, clicked "Get Column Information" and then created a new complex type (myStoredProcedureName_Result) which I assigned.
3. My LINQ is the following:
[Code]....
I have 3 tables (ShoppingCart, Data, Temporary) in database (Entities) I have no problems in getting data into ShoppingCart. I also know how to transfer data from columns in table ShoppingCart into columns of table Temporary (like EngName, CartID, Date, Quantity etc. - see code below) But I do not know how to multiply Quantity in table ShoppingCart by Price stored in table Data and save it into table Temporary. I think the problem is that I do not know, how to select coressponding row in table Data (see "var myCart2" in my code below) which holds the Price value for EngName previously selected by ("var myCart" also visible in the code). protected void Submit(object sender, EventArgse)
{
using (Entities
db = new Entities())
{
try
{
String
cartId = GetShoppingCartId();
var myCart = (from
cc in db.ShoppingCart
where cc.CartID ==
cartId select
cc);
foreach (ShoppingCart
item in
myCart)
{
int
i = 0;
if
(i < 1)
{
string
engname = item.EngName;
var myCart2 = (from
c in db.Data
where c.EngName ==
engname select
c);
Temporary ta =
new
Temporary();
Data d =
new
Data();
i want to know how to call stored procedure in entity framework. how to do code with controller class and with model.
i mean if i want to call insert,update,select,delete stored procedure for entity framework then what are stps i have to follow.
I am selecting some products from database and would like to show them in client's grid using WCF. Problem is I don't know how to pass selected collection to the client since my method can't return that data type.
My method:
public class Service1 : IService1
{
public ProductData GetData(int value)
{
using( NorthwindEntities NWEntities = new NorthwindEntities()){
[Code]....
I always get this error when the table is existing in the database:
[Code]....
The inner exception of the error is this:
[Code]....
I checked the following for possible errors.
webconfig (both the values of the SQL connection string and the NHibernate connection string are the same)checked the existence of the tables.
Imagine that there are 4 records to be updated/inserted. The first 3 are successful. However, when the last record is to be inserted/updated, the error is thrown.
when i create ado.net entity data model and I add two tables only one is added to entity data model
none of the tables have any kind of relationship are simple tables.
I am working through the MVC Music Store example that is listed on this site. I am also trying to create my own MVC application in which I have several tables defined in a very similar way to the music store.
When I am defining my Models and running the application I am getting an error indicating that there is no key for a table that I know has a key. For example
Table1
int Id
string fld1
int Table2_id
Table2
int Id
string fldxyz
Code:
public class Table1
{
public int Id;
public string fld1;
public int Table2_id;
public Table2 table2;
}
public class Table2
{
public int Id;
public string Fldxyz
}
of course the Id fields on the database are setup as being the key fields and are unique. When I run the application I am getting an error indicating the Table2 doesn't have a key and that it needs to be defined.
I am busy developing an application using EF4 and MVC2. My development database has a few extra fields that is not in my production database. I have removed the fields from the Model, and published my application to my web server. But now I am getting errors that says I have some invalid column names, but I have removed it from my model. If I go to my Mapping Details, I see the fields removed from the Model are still there, but not mapped to anything.
View 2 Repliesi have multiple tables .
I have created one stored procedure where I am selecting the table values.
like
[code]....
I am using LINQ to retrieve the Data. So Using Linq I am calling the stored procedure.
So I ll get the table values in the C# Code the table values.
so in my UI i have 4 gridviews.
I want split the output values into four source and bind it to the grid.
We have an IVR product that reads a configuration database for callflow information. I am writing a tool for our implementation team that will allow them to add/delete/update the data in the configuration database. Once the tool is in production, the implementer will use only the production release of the tool to modify the configuration database in all four of the IVR regions (Dev, QA, Cert, and Prod). Each region has its own database with identical schemas. The tool has 'tabs' across the top for each region. If a user is currently working in the Dev region and clicks the QA tab, how do I switch my connection from the Dev db server to the QA db server?
View 3 RepliesI've scenerio where i've two dropdownlist box (one dependent on other, displays handset brand name and on selection displays the respective model name), two combolistbox which is bounded to their respective datasource(Displays the fault and accessories).
Now i've to update the three tables booking(Handsetid, Brand,model), accessories(handsetId,AcesoriesID) and fault(handsetID,faultID). Ive to update multiple rows in Accessories and fault.
These controls are present in datagridview EditTemplate
I ahve two tables each with a primary key. There is a lookup table in between the two tables with relationships. Below is a simplified look at the table structure
Table 'Product'
Column ProductPK int (Primary Key)
Table 'County'
Column CountyID int (primary key)
Table Product_County_Lookup
Column ProductPK int (Joint Primary Key)
Column CountyID int (joint primary key)
I already have the ProductPK and CountyID. What is the correct LINQ statement to insert into Product_County_Lookup table ONLY?
when i delete Table (Entity Set) from edmx file ... it deleted from design but when i'm trying to add that table again to edmx file it doesn't appear in added table and when i open edmx file by xml i found table and its relation still in edmx xml so how can i delete entity set (table) completely from db note : i don't want that solution ...i want another easy solution [URL]
View 2 RepliesI have two tables in a database and I want to select one value from one of that table. For that I want to pass one value and if that value stored in the table I want pick the id representing the value in the next table.
That means the operation is that first I select a row of data from first table by using a user control in that row there is a value (example "apple") and I want pass that value("apple") to the second table. In the second table the value ("apple") having a id (example "australian") and I want that the query search for that id ("australian") and show that in the text box.
[code]....
Imagine that this is the two tables using a usercontrol I select first a row from first table and I want to pass that value "apple" to second table and find out the id of "australian" (that is equivalent id for apple in the second tabl ) from the second table and show that in a text box.