perviously i use ms access (.accdb) as my database, my sql connection is Dim connstr As String = "Provider=Microsoft.ACE.OLEDB.12.0;" & "Data Source = LibraryDatabase.accdb" now i have add a new customer.mdf with tables in my project, but what is the script for sql connection for (.mdf)?
View 1 RepliesI have the following problem: I select a customer from a dropdownlist and then the gridview should load all items of all orders of that customer. I have the following query:
Dim allorders = From ord In db.Orders
Where ord.CustomerID = Convert.ToInt32(CustomerDropDownList.SelectedValue)
[CODE]..............
I also tried to modify the query as follows:
Dim orderitems = From oi In db.OrderItems
Where oi.OrderNumber = (From From ord In db.Orders
[CODE]...........
But this does not work. I just started using LINQ.
A registeration sys using a Microsoft acres database I have a table named customer info to store customer details when registering and I need coding that will add the following to my table customer I'd , firstname, lastname , phonenumber and user also has to make selection between radio buttons male or female.
View 2 RepliesI am trying to autocomplete customer surnames direct from the Customer Datatable, using the code below which I got from another thread, but nothing is happening.
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I have a table called PARTS and table called PARTEXT.
PART has:
PartID
PartDescription
PartCostPrice
PartSalePrice
PARTEXT has:PartID
PartImagePath
For some reason (please don't ask me why) the designer of the database splitted the tables.I need a sql command to "combine" between the two tables by making new View, so it will show the content of the PART table and in each row it will get the PartImagePath of the same PartID that both tables have.
Is there a way that I can vew the tables once I have connected to an open connection?[code]...
View 2 RepliesMy project is a standalone application with lots data retrieval and sometimes data update.No SQL server or connection provided)Here is sample code
Dim objDS As New DataSet("Quesetion")
Dim dtBook As DataTable = objDS.Tables.Add("Book")
Dim dtChapter As DataTable = objDS.Tables.Add("Chpater")
[code].....
I have a program that connects to an ODBC tables (3 of them) and I use select .... Left join etc Where ... etc. The issue I have is the connection takes about 20 to 25 seconds to complete. I'd like to create some status message so the user knows the system is not actually hung. Using Visual Studio 2010 Ultimate, VB.NET, ADO 2.7.
View 1 RepliesThe program is currently trying to pull information from three different database tables and compiling the information onto one screen, to do this i am using three different connections and a function to handle the data at each stage. The issue is as my code hits PageLoadStage of "2" and runs the QueryDatabase() Function i am encountering an error of: "OleDB exception unhandled: No value given for one or more of the required parameters." This occurs on line 15 of the first code snippet. Can anyone explain this and/or identify any code issues if that is the cause.
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I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:
da.FillSchema(dt, SchemaType.Mapped)
da.Update(dt) << This line
'da = dataadapter
[code].....
In my datagridview I was fill in using join tables (table1 = pr_employees, table2 = pr_employee_deduction). My problem now is during save button I want to update records from table2 only.[code]
View 3 RepliesWe are presently developing an application, let's call it APP1, which uses a SQL Database which have about 800 stored procedures, 600 tables, etc. APP1 was originally created in order to replace another application, APP0, from which we do not have source code but only SQL tables, Stored Procedures, views, etc. Previous programers of APP1 used some DB objects from this same database and added some other objects specific to APP1 because it becomes bigger than APP0. And we do not need APP0 anymore as APP1 does all what we want, and more.
So, now, we are thinking about a way to find out which objects are used by APP1 in order to remove objects which are ONLY used by APP0.What is the best approach to discover all objects used by APP1 without having to open every single class and form?
Once we will have a complete list of these objects, it will be easy to use a program we bought which detects all dependencies for all SQL Objects specified directly from SQL and remove objects which do not return from any dependencies. Any ideas of how I could get this list without having to go through all our program that have many, many, many classes and forms?
Note : I know, in a perfect world, all calls to PSs and tables should be in a DAL but in the case of the application we're presently working on ... this is not our case! Yippy! (sarcastic yippy) ;)
Note 2 : This application is not using any ORM. So all queries are directly using SqlCommand. So any call to any DB objects are in string format.
I have a 5 tables in my database and i want to access all my tables togather at a time.e.g.I have a code for one table i.e. rs.Open "select * from Group_info", con, adOpenDynamic, adLockBatchOptimistic. instead of Group_info table i want to access 5 tables also as Login_table,User_info table,group_name table etc. How i do that
View 11 Replies[code]A customer can not exceed a debt load of 36% of their gross monthly income including house rent or a mortgage.[code]I basically know how to code this. I get the information from the user (income, rent, and other monthly payments) and then ask if they have good, ok, or bad credit (this will be the percentage part) and I know mostly what to do, but the hardest part is the actuall coding part, basically the calculations part, im always confused on what to do, my example shows basically what to do and I know how to get the users info, but how to program the calculations, is where im also stuck at My example is (the money for the income, rent, and other monthly payments the user entered already)
1. If there monthly Income is:$2,000.00
2. Monthly Home Rent/Mortgage:$500.00
3. Other Monthly Payments (alimony, child support, student loans):$100.00
4. Then there allowable Monthly Car Payment:( 36% of 2,000 (income) = 720)( now I subtract debts 720 - 500 (rent) - 100 (other) = 120) :$120.00
5. Display Maximum Car Value (interest rate based on credit):Present Value Function (16% per year (this is where I check one of the boxes for the credit, which in this case its an ok credit), 6 years (I have to keep it at 6 years), 120 (this is the allowable monthly car payment) per month)So basically PV((0.16 / 12), (6 * 12), 120) : $5532.03.
im using a datagridview, and it is connected to ms access. every time i have an input same in the column where primary key is I already got an error. can you guys how to show a messagebox if the Customer Contact number is already in use? here is my code.
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It's a basic Access database driven e-commerce site. I have a home page, a products page, an orders page, an order confirm page, a shopping cart page and a view current orders page. The site uses an Access database with three tables. A Customer table, with all of the customer details, (FirstName, LastName, EmailAdd, CardNo, CardEx, SortCode, DeliveryAdd, Postcode)A Products table, with all the product information, (ProductID, ProductName, Price, ProductType, Images, ProductDescription). And an Orders table which contains CustomerID and ProductID.I've managed to get the orders page to work, this leads to the order confirmation page which displays the details the customer just placed.Here is what I have in the order confirmation page load event so far. Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
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This returns this error "Syntax error in FROM clause." I'm guessing my SQL code is wrong. I noticed when I placed the order in the order page it added an entry in the Access database where the generated CustomerID was 12 on the customers table and 4 in the orders table. Shouldn't these numbers be the same when they are generated?
So, I want to implement my own binary serialization. I'm looking for some examples to head me in the right direction.
View 2 RepliesI have a home page, a products page, an orders page, an order confirm page, a shopping cart page and a view current orders page. The site uses an Access database with three tables. A Customer table, with all of the customer details, (FirstName, LastName, EmailAdd, CardNo, CardEx, SortCode, DeliveryAdd, Postcode)A Products table, with all the product information, (ProductID, ProductName, Price, ProductType, Images, ProductDescription).And an Orders table which contains CustomerID and ProductID.I've managed to get the orders page to work, this leads to the order confirmation page which displays the details the customer just placed.[code]This returns this error "Syntax error in FROM clause." I'm guessing my SQL code is wrong.I noticed when I placed the order in the order page it added an entry in the Access database where the generated CustomerID was 12 on the customers table and 4 in the orders table.
View 2 Repliesi created a sales form and it is using currency also the project is working greatthe thing is when the form loads everything works great shows the decimal and dollar sign's for the first customer but when i click on the navigator for the next customer there is no decimal and dollar sign's how can i inherit the same controls to the next customer.
View 9 RepliesI'm currently in the middle of attempting to create a query that will be used so that the application user will be able to search the a customers id number. I'm completely new to adding queries using the query builder so I've become slightly stuck on trying to get this to work corrently.
I have a database which is set up and in this case the table is called 'cid' which defines the customers id column in the database, this is a primary key and the column has a data type 'AutoNumber'. I've become stuck as I'm not sure what I would have to put into the filter to make this query work.
how to view report particular Customer Name. in this code when i m type from date or To date report is showing all customer information but i need single customer info with name or Date this is my code.
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[code]... i want to add CUSTOMER NAME in this code how to view each customer datewise
View 2 RepliesI'm trying to add 3 customers to an array that I can then display in 4 seperate text boxes on my form. First Name, Last Name, Account Number and Balance.
Public Class Customer
Private firstName As String
Private lastName As String
Private accountNo As Integer
[code]....
Error 2 Argument not specified for parameter 'account' of 'Public Sub New(first As String, last As String, account As Integer, balance As Decimal)'.
I have to calculate the maximum mortgage possible for a customer. If it is a single application, the customer can borrow up to three times their salary plus any savings and investments they may have.
If it is a joint application, the customer can borrow 3 times larger salary and 2 times the smallest, also borrowing against any savings and investments. In either case, the applicant is not allowed to borrow in excess of 90% of the purchase value of the property (including stamp duty and legal fees).
I have declared everything and done out the code, yet every time I calculate the max amount they can borrow, it comes up as 0. My code is below if anyone can spot problems.Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
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I working on a program that I am trying to create a customer data form.Along with the form I have their vehicles related to that record.Now I have setup a dataset in the form.I am pulling data from the database, however when I enter a new record on the customer part the customerID is in the running order, everything seems to be working on in this table.But when I create a vehicle for this customer I have a running vehicle id.Example: I have in the database 4 customers.IDs 1,2,3,4 customer 1 has vehicle ID1,2.customer 5 has a car there 1st car but the database gives is a ID of 3.I want this customer to ID 1 for car one.My problem might be because it was set in the database as Unique Identifier.Maybe I should make the license plate the unique identifier.
View 4 RepliesI am sure some of you have seen this project before. I need to create an application that queries customer name (first and last) and there addresses. I need more than that but once I figure what i am doing wrong with that, I should be able to figure out the rest on my own. I am using VS 2010. I can not figure out the proper syntax for String.Format. I can only get it to display the first and last names of the customers.This is the code I have so far:Public Class Form1
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I have an application that uses resource files (.resx) to switch the application between languages.These resource files are compiled at development time to create the dll'sHowever, there are many times when an application gets deployed onsite, and there are spelling mistakes, or general mistakes in the translated text.
View 1 RepliesIn my sales order i use one combo that is CUSTOMER, actually it display all the data of CUSTOMER database.
at run time in SALES ORDER i saw that the CUSTOMERis not available in that combo then i want to add new customer there which save in my CUSTOMER data base WITH OUT LOSSING WHT EVER I INSERT IN SALES ORDER.
I am able to loop through all the customers in db but unable to fetch the address of customer to disply to the using using vb .net?
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