Has anyone used a control that would allow them to select and bind to another data control with a foreign key? I have a grid that I can filter with a datalist and listview, but, I have a many to many relationship in the table I want to use in a control to further filter the grid that only has a foreign key to the table data in the filtered grid.
View 4 RepliesHow to get the id of the row in gridview, DataKeyField="OrderID"
Protected Sub dgdOrders_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles dgdOrders.RowUpdating
end sub
I have a datalist where each item consists of a textbox and a dropdownlist. I want to get the datakey value when a selected dropdownlist item changes. I can get the selected value of the dropdownlist, but I can't figure out how to get the key field value of the datalist row item that the dropdown resides in.
[Code]....
[Code]....
I have two tables
Employee Table : ( EmployeeID,EmployeeName,... Etc )
Bonus Table : ( BonusID,EmployeeID,BonusDate,Bonus Reason,... Etc )
I wanted to list the bonuses in a gridview, so i made a query to return list of bonus records and my data access object returns the result set as Bonus business object ( generic collections of bonus BO ). i have bind my gridview with the bonus collection.
now my problem is that collection has the property "EmployeeID" and it will be displayed but instead of showing EmployeeID, i wanted to show Employee Name in that grid. I have a gridview where i want to list the bonus records ( bonus ID, bonus date, bonus description, employee ID) ,
I'm using objectDataSource and Formview. Currently I'm using a Text-Box to put the CategoryID.
I want to display the Category-Name instead of Category ID in Drop Down list.
i want to display name of related table in my gridView insetad of it's id. one solution is using sqlDataSource or objectDataSource, but i don't want using this appproach. i want to do this without setting any dataSourceID or join tables, in other word, i want to do this like windows form datagridViewComboBoxColumn.
View 3 RepliesI have dropdownlist that maps from a SQL foreign key, which can be NULL.
Currently, I've added a "Please select..." to the top of my dropdown list and assigned it a value of 0.
I know how to map from the drop down list to SQL using a CASE statement in my UpdateCommand.
But how to I map from the SELECT statement to my dropdownlist? If this foreign key contains null I get "Item not in Dropdown list". I'd like to show "Please Select..." as the dropdownlist item if the SQL item contains NULL. I saw something online that says to use the value '''' for 'Please select...', but I don't think it's right, plus it doesn't work.
Do I have to do something in my SELECT statement or do I have to do something on DDL.Databind?
I have a search button ..The result will be displayed in grid view if the button is pressed .. i am able to do it
But now i want to do like this ..that is my grid view is only displaying the ResultId .. I want to display the ResultName rather than resultID in the table
This must be a common problem but I haven't been able to find an answer.I have dropdownlist that maps from a SQL foreign key, which can be NULL. Currently, I've added a "Please select..." to the top of my dropdown list and assigned it a value of 0.I know how to map from the drop down list to SQL using a CASE statement in my UpdateCommand.But how to I map from the SELECT statement to my dropdownlist? If this foreign key contains null I get "Item not in Dropdown list". I'd like to show "Please Select..." as the dropdownlist item if the SQL item contains NULL. I saw something online that says to use the value '''' for 'Please select...', but I don't think it's right, plus it doesn't work.Do I have to do something in my SELECT statement or do I have to do something on DDL.Databind?
View 2 RepliesFor my Dynamic Data site I have a table that has a join to a number of other tables. If I use the standard page for this table I get all of my columns from the primary table and related tables (which is good) and the appropriate literal values from the related table (which is great). The bad part is the order of the columns.
To address the order of the columns I created Custom Folder/Page for the table. I also have a partial class that controls date formatting. This takes care of the ordering of columns fine (which is a step forwared), but now I'm seeing the foreign key IDs instead of the literal values from related tables (which is a step backward).
All I did was copy the standard page to the Custom folder for the table, turn off AutoGenerateColumns, and specify the column order and display name. Why would the foreign key change occur? As a side note, if addressing column order in the partial class is the preferred method I could go that route, but I haven't been able to understand how to do that in VB (I've seen many examples in C#, but that's not my strong point).
I have a strange problem. I suddenly noticed that the gridviews on my list.aspx page are now displaying the numeric foreign key value rather than the display column value. For example, instead of displaying:
[Code].....
I have a database with a 1 to many relationship in SQL Server 2008. I have created a formview in VS2008 to insert records into the child table. However I can't set the foreign key to automatically insert this value. If I manually type in a value the insert works but I need it to pick up the fk ID automatically from the master table. How can I do this?
The master table: tblTopic has ID int auto increment primary key and the child table has ID int auto increment primary key and TopicID int allow duplicates no nulls, foreign key. I have set updates to cascade in the relationship.
My insert statement is INSERT INTO tblTopic (TopicID, Comment, SubmittedBy) VALUES (@TopicID, @Comment,@SubmittedBy). The TopicID keeps throwing the error, this is the foreign key.
This is the first time I have tried to do this, so apologies if it's really obvious but I'm on a bit of learning curve.
I'm not sure if you would consider it a foreign key field or not, but I have an agency table with an association to my Project table. It exists primarily to limit the input values of agency in the Project table to those listed in the Agency table. Anyway, everything works fine, except that when you insert/add a project, the Agency field is moved to the end of the list. I'd like to move it back where it belongs (further up the list).
View 3 RepliesI have a gridview displaying "registrationtype id" (FK) from the registration table. I want it to display the related name instead of the id from the registartiontype table.
View 1 Replies1 - Is it necessary to have foreign key to obtain a Relation in Entity Framework between each entity.?
2 - I have a Language Table and many many table with a foreign key related to the language table. Is it right to add this foreign key or I should do something else ?
Ex:
Language
LangID
LangName
TableTextA
TblAID
TextInfo
LangID
TableTextB
TblBID
TextInfo
LangID
TableTextC
TblCID
TextInfo
LangID
etc ...
I have two tables - Advert and Student
adID is the primary key (Advert) and acts as the foreign key for Student
I have two pages, both of which each have a detailsview in insert mode
what I want to achieve is to create a new record in advert.aspx (e.g. adID = 4), then when item is inserted, redirect to page student.aspx (which a student record is created) where the foreign key is the ID from the advert just created (e.g. student.aspx?adID=4).
I cannot get the value from the drop down list and I not sure what's wrong with the declaration and the code.
Dim selectedIntake As String = intakeDropDownList.SelectedItem.Text()
Dim selectedSupervisor As String = supervisorDropDownList.SelectedItem.Text()
.supervisor_ID = selectedSupervisor(0), _
.semester_No = selectedIntake(0) _
[Code]....
This is the error message I get :
The INSERT statement conflicted with the FOREIGN KEY constraint "FK_student_Details_lecturer_Details". The conflict occurred in database "SKTM-AAS", table "dbo.lecturer_Details", column 'supervisor_ID'. The statement has been terminated.
I'm trying to insert a new EF object containing a reference to a related table via foreign key, and cannot get the reference stored in the new object. I have two tables in a SQL Server 2008 Database:
Component Templates
PartGroups
with a Foreign Key linking them thus: ComponentTemplates:ID [0..1<->*] PartGroups:ComponentTemplateID
I have imported these tables into a .NET web application project .edmx file (using a new ADO.NET Entity Data Model), and then created a Data Service which I then reference in a Silverlight 3.0 project. The objects are available as expected in the data context called by my Silverlight app and load correctly. Now, when I try to save a reference of ComponentTemplate into a newly created PartGroup, the PartGroup object is created in the database, but the value of ComponentTemplateID in the newly created table record is NULL.
[Code]....
(Note that _ctCtrl.ComponentTemplate is a confirmed non-NULL object reference to the parent object on which PartGroup is a child)
for foreign key which data type is covinent ?
example:- a fruits shop application.
i have 4 text boxes in that can enter 1.mango,2.apple,3.banan,4.pineapple.
i want to buy and sale, inventry based on date save in database and retrive.
I've two table
a). Country
1.CountryId -PK
2. Country Name
b)City
1.CityId---PK
2.CityName
3.CountryId --FK to Country table
and my code is FWUDataContextDataContext CityContext = new FWUDataContextDataContext();
I have a app that records some jobs and those jobs can have notes attached therefore i connected the table with a foreign key, my notes to a Job.
in the details view of the job i allow the user to view the jobs by sending the id and fulling all the notes that match the id in the index view for the notes table. in the list of notes i have a action link to create a new note, here i sent also the id of the job to the create action of the control and try to insert that intot he note JobId to make the reference. I get this error and the note is not created. the note creats from code but not via the note controller creat action.
i get this - An error occurred while updating the entries. See the inner exception for details. below is the create action in the note controller
public ActionResult Create(int id)
{
// var newnote = db.Jobs.Include("StatusNotes").Single(j => j.JobId == id);[code]...
How can I give set foreign key value field in Entity Framework. I have Kartlar entity (related from kartlar table). I need simple save method this field but, RehberID, KAmpanyaId,BirimID is foregin Key....
public static class SatisServicesUpdateTables
{
public static void SaveKartlar(int RehberID, int KampanyaID, int BrimID)
{
using (GenSatisModuleEntities genSatisKampanyaCtx = new GenSatisModuleEntities())
{
Kartlar kartlar = new Kartlar();
kartlar.RehberReference.EntityKey = new System.Data.EntityKey("genSatisKampanyaCtx.Rehber", "ID", RehberID);
kartlar.KampanyaReference.EntityKey = new System.Data.EntityKey("genSatisKampanyaCtx.Kampanya", "ID", KampanyaID);
kartlar.BirimReference.EntityKey = new System.Data.EntityKey("genSatisKampanyaCtx.Birim", "ID", BrimID);
kartlar.Notlar = "hfhfhfhfhfhfghfghfgfghk";
genSatisKampanyaCtx.AddToKartlar(kartlar);
genSatisKampanyaCtx.SaveChanges();
}
}
}
But it throws to me : ArgumentException was unhandled by user code link text
i am using sql server 2005 as backend for developing webforms with asp.net using C#.i have two tables table1 and table2.
table1 has user_id(primary key,not null),user_name. and table2 has dept_id(primary key,not null),user_id(foreign key,not null),dept_location.
Firstly i created table1 and insert data in it.. later i created table2 with foreign key relationship with table1..In the add form design of table2 for entering data and insert into table2,i placed a dropdownlist which is binded with user_id from table1...dropdownlist's.datatextfield is equal to "user_name" and datavaluefield is equal to "user_id"..i have to select user_name from dropdownlist.... what i have to do is to insert data into table2... i used the simple sql insert statement as follows..
insert into table2 values(......); but it shows error :insert statement conflicted with the foreign key.
I have these two tables in my diagram:
the 1st:
PAR_TipiDocumento with
idTipoDocumento PK
idClasseDocumento
[...]
the 2nd:
PAR_ClassiDocumento with
idClasseDocumento PK
[...]
and a foreing key FK_PAR_TipiDocumento_PAR_ClassiDocumento from PAR_TipiDocumento.idClasseDocumentoto PAR_ClassiDocumento.idClasseDocumento.
This is my .cs code for the metadata:
[MetadataType(typeof(PAR_TipiDocumento_Metadata))]
[DisplayName("Tipi Documento")]
public partial class PAR_TipiDocumento[code]....
The problem is that in the Dynamic Data generated pages I correctly see all the display names "Tipi Documento" except for the header row of the PAR_ClassiDocumento table where I have "PAR_TipiDocumentos" (the plural generated by LINQ to SQL). The values under this column are correctly rendered as links to the PAR_TipiDocumento table with the right display name ("View Tipi Documento").
How can I change the Display Name of that "PAR_TipiDocumentos"?
I am having trouble with foreign keys Dynamic Data and entity framework 4.0. It feels like there is a problem with the entity association but I am not sure. I have multiple fields representing the foreign key on the insert page.
When I try and insert data I get an error A dependent property in a ReferentialConstraint is mapped to a store-generated column.
Column: 'CommentId'
My data is a very basic one to many relationship, the foreign key in question is BookId in the Comment Table.
[code]...
When I let the scaffolding do its thing, I get multiple fields representing the foreign key.