I want to delete the items in db using linq to sql below is my code
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here i am very much confused about this var delt= from x what is x here? and dc2.emps.deleteonsubmit (here what is emps?)i am getting errors like emp id doesnt exist in the current context.
I have a question about linq delete.
I have 2 table in database and they are joined.
First Table: UserID, UserName, UserSurname, UserPhone, CompanyId
Second Table: CompanyId, CompanyName
First Table I have many recods with related second table.
I want to delete one company in second record, But firtly I have to delete users (more than 1)
How can I delete it with using linq?
I have a few tables, Listings, ListingImages and a few others related to Listings. ListingImages is related to Listings so that you can have many ListingImages per Listing.
When I query this table I do;
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Now this is fine. However, I now want to sort the ListingImages independently within each Listing (by an ImageOrder column I have in that table).
How can I do this and pass all my Includes(...). Would it be bad form to sort the ListingImages within the View as this solution seems to work?
a DropDownList bound to a table
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when I delete all records from the table it display this error messageon the line ddlIdOCRQ.DataBind()"Argument Out Range Exception was unhandled by user code""'ddlIdOCRQ' has a SelectedIndex which is invalid because it does not exist in the list of items.
im doing an album page just like facebook album
Now im trying to allow deleting album function in which, when i click a button or linkbutton,
the entire album will be deleted including all the photos within that particular album
Album and photo is in two different table in my sql
im using the sqldatasource to set the delete parameter
DeleteCommand="DELETE FROM [Album] WHERE [AlbumID] = @AlbumID"
is there any way i can insert another delete command in the same sqldatasource or other way to do it?
i duno how to do with store procedure.
how to Delete with linq to sql using mvc 3.0? how to delete in mvc 3.0
View 6 Repliesi'm using Datalist for to display images from database. I made by this tutorial [URL]. How to delete selected image from sql server?
View 6 RepliesI am building a web site, it's used to manage the data in SQL server so the another web site(connect to the same SQL database) can receive the new infoSo far I've build 2 parts, one manages the news system, the another manages the album system, news manage system work perfect, when I update, add or delete news form the web site (using sqldatasource, INSERT, DELETE and UPDATE command), the data inside SQL changes as well.
View 2 RepliesI have json file Users.json and I want read json object from file and store in to database one by one. how to delete json object when it stored in database. when object not save in database then it not delete from file. Need to know about delete json object.
using (FileStream fs = new FileStream("user.json", FileMode.Open, FileAccess.Read))
using (StreamReader sr = new StreamReader(fs))
using (JsonTextReader reader = new JsonTextReader(sr))
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I am working on delete confirmation box in asp.net mvc using linq to sql. I want a delete confirmation box if i want to delete record corresponding to a particular id.If i click ok, it has to map to Delete controller and if i click cancel ,it has to be retained in the same page.
View 3 RepliesI use Linq to Entities and want to update and delete data. I know the ID of the object / record.
How can update and delete without first selecting the complete object (asuming that this is better for performance)?
How to insert,update,delete and search facilities provides the asp:dropdownList.
View 1 RepliesI have a datatable in which some of the rows contain a column with duplicate values. I need to be able to delete the duplicate rows and leave only one, doesn't matter which one.
The rows might look like this:
A, B, C, D
E, F, G, D
H, I, J, D
I need to delete two rows and be left with only one.
how can i delete a row in datatable using linq to dataset?
I have a dataset in my project, need to delete some rows filtered by ID
how can i do?
how to delete all the products from table against a category id using linq.
View 2 Replieshope to delete all records in DBPrograms, is the following code correct?
DBContext db = DBContext(PublicDBPar.ConnectionString);
db.DBPrograms.DeleteAllOnSubmit(db.DBPrograms);
db.SubmitChanges();
Here i want Do project with Angular js..
View 1 RepliesHow to delete the row if checkbox is checked using listview of asp.net with c# ....
View 1 RepliesWith linq to entities, how can I delete and update data inside a database without first selecting the complete entity at first?
View 4 RepliesI have the following one-to-many relation between two objects.
Parent
--> IList<Child>
Now, I have a List of Parent objects and I want the First Child of each parent in the list.
What is the best way to do this using Linq?
i am new to this linq concept,
i have used the following code to delete multiple records in my table,
but when i hit the button insteading deleting multiple records only one record is getting deleted
below is the code
protected void Button1_Click(object sender, EventArgs e)
I have a GridView and on a row being deleted I trigger the GridView1_RowDeleting sub, but I receive an error "LINQ to Entities does not recognize the method 'System.Web.UI.WebControls.TableCell get_Item(Int32)' method, and this method cannot be translated into a store expression." Code is:
Private Sub GridView1_RowDeleting(sender As Object, e As System.Web.UI.WebControls.GridViewDeleteEventArgs) Handles GridView1.RowDeleting
' The deletion of the individual row is automatically handled by the GridView.
Dim dbDelete As New pbu_housingEntities
' Remove individual from the bed.
Dim remove_bed = From p In dbDelete.Beds _
Where p.occupant = GridView1.Rows(e.RowIndex).Cells(3).Text _
Where p.room = GridView1.Rows(e.RowIndex).Cells(6).Text _
Where p.building = GridView1.Rows(e.RowIndex).Cells(5).Text _
Order By p.id Descending _
Select p
remove_bed.First.occupant = ""
dbDelete.SaveChanges()
' Increase number of open spaces in room.
Dim update_occupancy = From p In dbDelete.Rooms _
Where p.room1 = GridView1.Rows(e.RowIndex).Cells(6).Text
Where p.building = GridView1.Rows(e.RowIndex).Cells(5).Text _
Select p
update_occupancy.First.current_occupancy = update_occupancy.First.current_occupancy - 1
dbDelete.SaveChanges()
End Sub
The specific line erroring out is: remove_bed.First.occupant = ""
I am trying to delete record from table with proper mapping from linq to sql.There is an error stating that Rmove method not found and are u missing an assembly reference.
AdventureWorks db = new AdventureWorks("Integrated Security=sspi");
var query = from con in db.Contact
where con.LastName == "Klein"
select con;
foreach (Contact del in query)
{
db.Contact.Remove(del);//???Remove not working
}
db.SubmitChanges();
textBox1.Text = "Contact deleted.";
I want to delete entity from linq class this entity has one to many relationshipe with another table so I want to delete all entities related to this one for example I want to delete classroom so i should delete all student is this classroom fisrt i don't how to delete all these student in one time
View 1 RepliesI want delete, edit, select items is in grid view i have to do in c# code it will reflect to database also
View 3 Replies