Connect Table Like America And Child Table Like State?
May 3, 2010how to connect my table like america and child table like State i want to add sub node or childto th tree view?
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Filter Parent / Child Table In Linq Query Based On Entities In Child Table?
Jul 9, 2010I have a table (Projects) which is linked to projectVersions on projectID..projectVersions contains several columns on which I'd like to filter a returned project (and associated projectVersions) list. For example there is a "capacity" column and a "country" column. I am doing a filtered list of projects on one page and I'd like to include all projects where any one of the associated projectVersions has a capacity of 750ml and a country of "France" for example.It may be that a particular parameter is not set and so I pass a zero to indicate not to filter on that.I guess this needs some kind of subquery as when I try and do something like this: [code] it doesn't work as the "xxx" bit, being one-to-many, expects me to specify an item to get at the entities within and yet I want to query where ANY of the associated versions match one of the criteria.
View 1 RepliesRefresh Table Adapter When I Have A Child Table Attached With Parent Table?
Dec 21, 2011I have a data table whose one column is related to a column of another table. I have a listbox in a form which shows a column (which is sorted by another column value by ORDER clause) of the parent table and other columns are in textboxes. The child table is represented by a datagrid. When I add a new item in parent table and click save, the newly created item is listed at the bottom of the listbox violating my ORDER clause. When I wrote some codes to fill data again after updating, it shows an error message[code]...
View 3 RepliesC# - LINQ To SQL Join Two Tables To Select Parent Table Twice Based On Two Different Columns From Child Table?
Aug 23, 2010I have two tables Employees and CafeLogs. Some employees can be cashiers and also customers at the Cafe shop.
Table structures:
Employees: EmployeeId(PK) , FirstName, LastName
CafeLogs: LogId (PK), CashierId, EmployeeId, Value, => CashierId and EmployeeId are the data from column EmployeeId of Empoyee table
Table relationship:
Employees 1:N CafeLogs (CashierId (FK))
[code]....
Right now I know how to select only LogId, Employee's name, and , Value, not with Cashier name yet.
Dim query = From log In db.CafeLogs _
Join emp In db.Employees On emp.EmployeeId Equals log.EmployeeId _
Select log.LogId, emp.FirsName, emp.LastName, log.Value
Show Parent Table And Child Table In Datagridview?
Jun 18, 2009in DataSet ds I have "tbl1" as parent table and "tbl2" as childtablehow to show both table in datagridview if column id in "tbl1" related to column headerId in "tbl2" ?
View 1 RepliesViewing Child Table With Parent Table In Datagrid?
Jun 17, 2009I have a SQL Data Base. I have created a relation between these tables. Problem is when i drag and drop it on Data grid i get only Parent table columns but i want to sea them both like this.
- Parent Table Row
- Child Row 1
- Child Row 2
[code].....
Connect To An Access Table That Has Spaces In Table Name (VB 2008)?
Feb 27, 2009I'm trying to connect to an Access table who's name includes spaces ('look Material Type').How do I identify this table in an OleDB string
View 2 RepliesCreating DataRelation With Parent And Child Tables And Generating Xml With Subnodes For Child Table?
May 21, 2012Dim obj_DataTable As New System.Data.DataTable("Category")
Dim obj_DataSet As New DataSet()
'Declaring the array of DataColum to hold the Primary Key Columns
[code].....
ASP Table Doesnt Save State?
Jan 30, 2012I created an ASP Table Control and added a row to it programatically. I then repeated the process to add another row. The first row that I added disappeared and only the newest row is being displayed. Is there a property that needs to be set to allow the state of the table to be saved?EDIT:All I do is click a button on the page and it adds a row to the table. Repeated clicks of the button only add one from to the table., here is the function that adds the rows.
Protected Sub addItemButton(sender As Object, e As EventArgs)
'get the id of the item they selected
Dim id As String = CType(sender, Button).Text
[code]....
Use In The Table To Load An Intermediate Check State?
Jul 31, 2009I have a DataGridView that has columns with a value type of boolean.To load the DataGridView, I load values into a DataTable then set theDataGridView.DataSource = theTable What value can I use in the table to load an intermediate check state?
Would it be better to use a check box control with a value than to use a column set to the boolean data type?
The check box is for display only, and will not need to be changed.
Add New Table In An Access Database And Copy All Content From An Existing Table To New Table
Aug 30, 2009I want to add a new table in my accdb and copy the content tfrom an existing table into the new one.
Is there an easy way to do this?
.net - Delete Row From Related Child Table?
Feb 5, 2011I've created a combobox for navigating orders in a grid view.
[Code]...
Can't Update Child Table In Program
Jun 6, 2012I have master/detail tables like Requistion and RequisitionDetail. when I use update command object in order to update both master/detail tables, the master table will be updated but the data in the detail table still remain unchanged. [code]...
View 3 RepliesGet Selected Record From Child Table?
Sep 3, 2009DataRelation is used to create parent child relation ship between ParentTable and ChildTable Its working fine. ChildTable is displayed in a datagridview. But now how to get selected record from child table?
View 14 RepliesHow To Delete Row From Related Child Table
Aug 27, 2010Is there a way to clear all the textbox and combobox in a form without looping through panels and tabpages, because those textboxes and comboboxes were place in a tabpages and panels.
View 7 RepliesPrimary Key Not Populating In Child Table?
Jun 10, 2011I'm having some problems trying to input records into a relational database. The design is really simple but I'm running into a wall when it comes to having the foreign key from my child table autopopulate the primary key from the parent table. I've made the connections in Access and from what I understood, so long as I committed a transaction, the child table would populate the primary key from the parent table. This is not happening.
my question is: is there a method that would do what I'm looking for? or am I cornered into using @@IDENTITY and manually inserting the primary key into the child table?
I've tried using datasets and data adapters and created a datarelation within the dataset, but it is still not doing what I need. everything I've tried thus far has allowed me to insert records into multiple tables, but won't relate them because of the missing primary key in the child table.
Stop Datamember Being A Child Of A Table?
Jul 3, 2011I have made a program that opens,views ,edits and saves to a xml
But I have a problem
I notice that I have some fields in my XML document that have child nodes as the same Parent nodes.
Heres a sample of what Iam talking about [code]...
Connect Foxpro Table (dbf) To .NET?
Jun 12, 2012I'm trying to connect foxpro table (dbf) to VB.NET. I'm trying to display the records of that table to listview in VB.NET. Here is my code:I got an error message here, the error says "cannot open the file"
Imports System.Data.SqlClient
Imports System.Data.OleDb
Public Class Form3
[code]....
Connect Text Box With Table?
Feb 22, 2010i m using vb.net n sql2005 how can i connect text box with table
View 1 RepliesConnect To A Table To Get The Next Unique Id?
Jun 6, 2012In my app, I connect to a table to get the next unique id (t_IDs). The code basicly looks up a specific table name and returns the next value. This is fine in testing, but the application is going to be used between multipul sites. I can see an issue where this may cause the app to slow down while it waits the next id before saving all the data to another table.
My question is, Is there away to set a SQL trigger to go and get the next id value and update the record when a new record is created? BTW - I did look at the uniqueidentifier option (NewId()) but the Id is too long. I need 1,2,3,4 etc.
Copy A Table To Another Table Without Overwriting The Contents Of The Second Table?
Feb 23, 2010How do I copy a table to another table without overwriting the contents of the second table?
View 2 RepliesAsp.net - Update A Child Table In Entity Framework
Mar 7, 2012I have 2 tables in my DB: "Competitions" and "CompetitionAnswers". Each competition will always have 3 answers. I want to be able to edit the Competition and CompetitionAnswers for the same view. I have managed to get the view to work by using editor templates So this is my editor template:
[Code]...
Get Datagrid To Display Data From A Child Table?
May 3, 2009I have a dataset that is being generated from an XML file.
This dataset has two tables (User and UserSecurity) - that is related because they both have the same primary key. [i know, the tables should probably be combined, but this is the data that I have to work with][code]...
Updating A Child Table Using Access Tables?
Mar 13, 2009I am getting a System.Data.InvalidConstraintException" ForeignKeyConstraint CompanyPasswords requires the child key values(-1) to exist in the parent Table. When saving updates to the parent and child tables.My parent table consists of 3 columnsCompanyID (auto increment, pk)Company NameURLMy Child table consists of 4 columns PasswordID (auto increment, pk)CompanyID (fk)User NamePasswordHere is all the code on the form
[Code].....
VS 2008 Updating Child Table Before Parent?
Jan 11, 2011I have a situation where a database table is updated with records inside a loop. Every record in this table has a parent child relationship with another table. This child table is also updated subsequently inside the same loop.I am creating the datatable for Parent table and adding records inside the loop, but committing the records in the database (using SqlCommandBuilder) outside the loop only once.
Inside the loop I am also calling the function for updating records in the child table. Because the adaptor and datable objects are created inside the child table function, I need to commit records in child table inside the function only. So this happens before commit of parent table. Because there is a PK-FK constraint in the database, an error is generated.
Simplest solution would be to bring all code inside one function. But I don't want to do that. Besides this parent child relations can go upto any levels.
[Code]...
How To Connect Form To Access DB Table
Feb 26, 2010I need to connect data entries in VB Form to Access database table?
View 2 RepliesHow To Connect Form1 With Mysql Table
Oct 15, 2011i have installed oracle 9i on my system and i dont knw how to connect even a simple form to my sql table in which i have two fields named first_name and last_name, the name of the table in sql is user.can some1 please tell me how to connect my form1 with the my sql table so that when i type the names in two text boxes the data is stored in the database.
View 5 RepliesSet Data Gridview To Connect To A Table
Jan 20, 2009Well the problem is probably me not doing something right but we will se.I have a form w/ just a datagridview on it. I have set the data gridview to connect to a table. I adjust the querry to only return 1 row.So it looks like select * from table where ident=@realident..so the problem is i want to use a variable from the form to be the @realident and i want it to auto load when the form loads not have to type it into the tool bar like you have to do by default.Also once the data is returned I would like to be able to edit a field or two in that data and have it save back to the db.
View 3 RepliesSql Server - SQLException Foreign Key Error Getting Child Table
Jun 14, 2012I'm currently trying to create a function to parse error messages to make them more helpful for the end user. Currently I'm working with SQLServer and VB.NET.
Right now I'm raising error 547 which looks like this:
DELETE statement conflicted with COLUMN REFERENCE
constraint Constraint Name. The conflict occurred
in database 'Database Name', table 'Table Name',
[Code].....
I'm able to pull every piece of information I need from the error message except the name of the parentTable. I've already determined that the SqlException doesn't store the statement that caused the exception, and as far as I can tell it doesn't store information about the name of the parent table, only the table that is trying to reference it.
Is there an easy way to get the name of the parentTable?
VS 2008 Referencing Child Table Column In DataGridView?
Dec 28, 2010I cant grasp it right now, lol. So here's what Im trying to do: I have two tables, a main table, and an employee table, with a foreign key in the main table pointing to the employee number in the employee table. Im trying to use a databound datagrid to show everything from the main table, and the corresponding name of the employee number referenced in the main table. Is there a way I can do that using DataSet.Table.Column.Expression, or what would be a simple way of doing this? I cant use TableAdapter b/c sometimes the database is offline, so preferably with datasets.
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