Databases :: Delete Record From Table With Proper Mapping From Linq To Sql?

Oct 21, 2010

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
textBox1.Text = "Contact deleted.";

View 1 Replies

Similar Messages:

C# - Linq Joined Table Record Delete - How To Delete With Using Linq

Feb 27, 2011

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?

View 2 Replies

Databases :: Delete Record From Excel Sheet?

Aug 20, 2010

I have write the code for deleting the data in excel sheet. but we have got the error" Deleting data in a linked table is not supported by this ISAM."

below I paste some code snippest.

string strDelete = "Delete from [" + strSheetName + "$]";
cmdExcel.Connection = con;
cmdExcel.CommandType = CommandType.Text;
cmdExcel.CommandText = strDelete;

View 2 Replies

DataSource Controls :: Select A Record From A Table And Insert Into B Table Using Linq?

Jun 29, 2010

how can i select a record from A table and insert into B table using linq?

View 2 Replies

ADO.NET :: How To Delete A Table Record

Aug 3, 2010

Is it possible to use LINQ to delete a row in a table within an SQL database? I am using an ADO connected command statement to delete a row where a string column equals a name. But, I would prefer to use an easier way with LINQ, if possible.

View 3 Replies

Databases :: Delete Duplicate Records From MySQL Table?

Sep 20, 2010

I have Revision column in Quote table with time stamp (MySql table) now i am viewing the entire date and time my end user want to view only Date he doesnot want to see time how can i pull only date.i am displaying revision column in two ways one in grid view and another one in field value

Query in my Grid view

Dim query As String = "SELECT QuoteNumber,Revision,Vendor,PartNumber,status,Customer,Requestor from quotes"

On select check box in grid view, filed values will be loaded with data.

field value

txtRev.Text = dt.Rows(indx)("Revision").ToString()

View 3 Replies

ADO.NET :: Closing Connection To Table After Executing SQL To Delete A Record?

Aug 4, 2010

I have written a routine to delete a record from a table. I want to include a statement to 'close' the connection to the table but I do not know the syntex of the statement that will do this. My code is as follows:


View 2 Replies

SQL Server :: Delete Child Record And Later Delete The Parent Record?

Dec 3, 2010

how to Delete Child Record And Later Delete The Parent Record if it has no child

Trigger might be the answer but i don t know how!

View 1 Replies

Databases :: Causing Oracle Database Table Failing To Save Inserted Record Permanently?

Sep 29, 2010

I have a table in orcale database where I am inserting records. I am able to insert a record in a table but it is not being saved permenantly.When inserting there is no error. what could be causing this?

View 4 Replies

DataSource Controls :: How To Delete Multiple Records In A Table Using Linq

May 14, 2010

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)

View 10 Replies

DataSource Controls :: Insert A Record Error - Can't Perform Create, Update, Or Delete Operations On 'Table?

May 11, 2010

when i want insert a record i see an error like this Can't perform Create, Update, or Delete operations on 'Table(MainMenuLink)' because it has no primary key. with this codes:

MyLinqDataClassesDataContext db = new MyLinqDataClassesDataContext();
MainMenuLink li = new MainMenuLink { Link = "", LinkSubject = "subject" };
db.MainMenuLinks.InsertOnSubmit(li); [code]....

View 2 Replies

Databases :: Choosing A Proper Back End For Web Application?

Jun 4, 2010

I have a client requirement wherein client needs a web Application. My team has decided to build it with ASP.Net Using C# as front end. Now my problem here is, client has back end as MS Access and due which numbers of users that are allowed to connect simultaneously to application is restricted to 15-20 users at the most. But client have big number of users who will accessing the site simultaneously.

View 3 Replies

ASP Join Of Two Databases - Display The Proper Email Address

Sep 22, 2010

I am having an issue with a join statement. The join is based on the customer id in both databases, however, I just happen to have the exact same spelling for the email field which is contained in both the customer database and the office database. How do I display the proper email address. The email I am sending sends to the office email address rather than the customer address.

View 2 Replies

C# - Efficient And Proper Linq Queries From Database

Nov 9, 2010

A sample linq query from MSDN: var expensiveInStockProducts = from p in products where p.UnitsInStock > 0 && p.UnitPrice > 3.00M select p; Does this query select EVERY column from the database table immediately, or does it return some sort of pointer that retieves the actual column data on demand? ie. If there are 50 columns in my table and I only use a single p.UnitsInStock in my actual code, then am I retrieving 50 times more data than I expected?

View 2 Replies

ADO.NET :: Proper Way To Encode HTML For Linq Insert Into DB

Oct 10, 2010

I've installed a Free TextBox editor to allow clients to do a write up about themselves and style it with HTML. Been reading about cross site script attacks (XSS) and want to make sure I'm correctly uploading the data collected with the Server.encode method.

Is this the right way to do it?:


View 2 Replies

Web Forms :: GridView Delete Parameter Doesn't Delete Record

Jan 27, 2011

I have a gridview with edit and delete parameters enabled. When I click on the edit link, I can edit the record successfully. However when I click on the delete link, nothing happens (the record does not get deleted).

View 5 Replies

Forms Data Controls :: Created A ListView And Attempted To Delete A Record Using The Delete Button And Native Procedures?

Sep 14, 2010

I created a ListView and attempted to delete a record using the delete button and native procedures. It failed and threw an error.Pass in a valid dictionary for delete or change your mode to OverwriteChangesIn researching this issue, it appeared there is a problem with the list view when deleteing and
ConflictDetection is set to










View 1 Replies

C# - Cannot Return Proper Model Into View When Doing A Join Linq Query

Mar 18, 2011

I have this code in my controller:

public ActionResult Index()
MembershipUser currentUser = Membership.GetUser();
Guid UserId = (Guid)currentUser.ProviderUserKey;
using (var db = new MatchGamingEntities())
var MyAccount = from m in db.Accounts..........

I want to be able to do a join query between my two tables Accounts and BankTransactions. This is a one to many relationship, there can be multiple BankTransactions per Account. I want to query this and display the account information including all the bank statements that are associated with it. I did a join in order to get it, but I am having trouble handling the model. I keep getting this error:

LINQ to Entities does not recognize the method 'System.Collections.Generic.List1[MatchGaming.Models.BankTransaction] ToList[BankTransaction](System.Collections.Generic.IEnumerable1[MatchGaming.Models.BankTransaction])' method, and this method cannot be translated into a store expression.

View 2 Replies

DataSource Controls :: LINQ Mapping To Complex Business Objects?

Feb 5, 2010

I have two business objects mapped via LINQ to tables. One of the objects contains an instance of the other object and share a key as an identifier.I want to retrieve Class A and within class A all of Class B's values as well. What I am doing is this:



This seems a little clunky, as in slow. Is there a better way to get the Class B (User) information without making a query every time?

View 4 Replies

Fetch Data From Two Table - Proper Results Not Get?

Mar 24, 2010

I want to fetch data from two table buut i m realy confused.

just i want recent two users in my site but problem is there that two users releted information stored in other table .

I also used join query to fetch that data but proper result not get .

View 1 Replies

Active Directory And Sql Table Mapping?

Dec 6, 2010

I have 2 users(for example: user1, user2) in the Active Directory.I have a SQL table called tblRolesforUser".
It has columns like UserId, Role type, Permission type, Project Id.

In the table:

User1 has Role type as Manager and Permission type as Contributor, and ProjectId as P001.
User2 has Role type as Manager and Permission type as Contributor, and ProjectId as P002.

I am creating a aspx page in Visual studio 2010, to add details of projects. User1 should not be adding or viewing information for project id "P002" and should add or view information for P001 only.

View 1 Replies

DataSource Controls :: Row Count Shows 1 Record But There Is No Record In Database Table

Jun 24, 2010

I am counting from a table for that i have written code as below

protected void get_Id_Afterpoint()
int counter = 0;
string strSql = "select count(*) as ID from tblEnergy where ID=?";
OdbcCommand com = new OdbcCommand(strSql, con);
com.Parameters.AddWithValue("ID", DropDownList1.SelectedValue);
OdbcDataAdapter oda = new OdbcDataAdapter(com);
DataTable dt = new DataTable();
if (dt.Rows.Count == 0)
lblID2.Text = "1";
counter = dt.Rows.Count;
counter = counter + 1;
lblID2.Text = Convert.ToString(counter);

there is no record related to DropDownList1.SelectedValue. but as i am counting if(dt.rows.count) and i put break point on the bolded part it shows 1 record. how it can be possible?

View 5 Replies

Fluent NHibernate, Dynamically Change Table Of Mapping?

Feb 18, 2010

with fluent nhibernate, is there a way to dynamically switch the table of a mapping at runtime?

public class XYClassMap : ClassMap<XY>
public XYClassMap( )
Id(d => d.Id).GeneratedBy.Identity();
Map(d => d.Value);

View 2 Replies

SQL Server :: Retrieving Users From Mapping / Pivot Table?

Sep 9, 2010

I have three tables.

UserID (pk)
TeamRecordID (Pk)

I want to assign employees to teams via a gridview control with a templated checkbox.

I have a dropdownlist control to select the TeamID.

I am having problems with the select statement.

The gridview needs to select employees that are not assigned to any teams as well as assigned to other teams. An employee can be assigned to many teams.

What I have been trying is:

cp.UserID, cp.DisplayName, et.TeamIntID, cp.CompanyID

View 32 Replies

DataSource Controls :: Unable To Select And Insert Data In Mapping Table Using Entity Framework

Jan 18, 2010

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 Replies

Copyrights 2005-15, All rights reserved