Insert the Partial Class to Be Correct?
Apr 21, 2010How do I insert the partial class to be correct?
Imports System.Data
Imports System.Data.SqlClient
Partial Class
[code]....
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Partial Entity Class With Shared Extension Not Associated With 'other' Partial Class In Client Using RIA Services?
Apr 21, 2011I have extended an Entity Framework 4 entity class with a calculated property in a partial class. This member is not available on the client to which the entities are exposed via WCF RIA Services.when using C# appears to be changing the extension of the partial class file from .cs to .shared.cs. I tried this with my VB.Net solution (.vb to .shared.vb) and got a long list of errors. I believe what happened is that the partial class lost its association with the entity on the client - it inherited from object rather than EntityObject.
My best guess is that this is related to the way that VB.Net handles namespaces.Each project has a 'Root Namespace' which is prepended to anything that is defined within a code file. C# has a 'Default Namespace'which is the namespace into which new types are placed by default - via a namespace statement within the file.The partial class is probably having the client namespace prepended to it which puts it into a different namespace than the entity with which it is associated on the server.Is there any means of extending an entity in such a way that those extensions are available on the client via WCF RIA Services and VB.Net?
C# - ASP.NET Partial Page Class Names?
Mar 29, 2009When you create a new asp.net page in VS 2008 and choose code behind, it also creates the typical aspx.vb or aspx.cs file to go along with it.
At the top of those files, VS names the 'Partial Class' name the file structure and/or name of the aspx file.
The question: Is there a best practice for this? Can I just use a single class name for all the pages in my application or perhaps a single directory instead of having to give each one a unique name?
Creating A Partial Class For A Form?
Nov 30, 2010I would like to create a partial class for my form. I have a lot of events, and it gets messy, so I would like to break up sections into their own files. The problem: When I create a partial class of my form, say:
Partial Public Class Form1
End Class
Visual Studio decides I need another form for this partial class.
1. How do I create a partial class for a form?
2. If I cant do that, how can I break up all the events in my form into different files?
Interface Implementation In Partial Class?
Jul 16, 2009I am reading a book (ASP.NET 3.5 Enterprise Application Development with Visual Studio 2008: Problem Design Solution, WROX)The source code is written in C#, but I am a VB guy, so I am giving it a try. Somewhere in the 2nd chapter, there is a Linq to Sql file used that is generated by drag&dropping the DB tables from the Database Explorer. Because some tables have the same type of fields, there is an interface generated called IENTBaseEntity. The writer says its a good practice to implement this interface in another partial class (not the designer.vb file!). The reason for this is that when the LinqToSql file is modified (and regenerated) the changes wont be lost.
In C# this solution is easy to do (i think), but in VB.Net I get an error, because the concerning properties in the LinqToSql file do not append the 'Implement IENTBaseEntity.Property' line. When I press [Enter] after the interface implementation line, VS generates other properties like this
Partial Public Class ENTUserAccount
Implements IENTBaseEntity '--->This line results in the error
' This is not the way it should be
Public Property InsertDate1() As Date Implements IENTBaseEntity.InsertDate
Get
End Get
[code]....
Accessing Variables In Partial Public Class?
Apr 10, 2009I am currently working on a project of "interpreting" C# into VB. The project involves adding images to a database, retrieving images from the database and presenting them in thumbnails. Right now I have the following Public Class with the Variable that needs to be assigned:
VB:
Imports System.Data
Imports System.Drawing
Imports System.IO
[code]....
Allow Only Numeric Values In Dataset Partial Class?
Aug 5, 2009I have a textbox which is bounded to the typed dataset. If the user in the textbox &hit keydown, it should allow only numeric values with 2 decimal points and also it should not allow more than one "."(dot). I found many but all thats are using textbox event
View 2 RepliesPartial Class Custom Data Validation
Sep 29, 2011I am testing custom data validation with partial classes. It is a Windows Form Entity Framework application .In the partial class file (time.vb) the code is:[code]What is wrong with my code? How can I handle the exception message in the main form (thrwon by the OnDataFundChanging event)?
View 3 RepliesPartial Mock Of A Class With Private Constructor
Sep 9, 2011I am trying to write some unit tests on a class that looks like this, using Moq [code] the parameterized constructor is private or internal one of the two methods relies on the result of the other.I want to check that when GetThisOrThat is called with a value, it actually calls GetThis. But I also want to mock GetThis so that it returns a specific well-known value.To me this is an example of Partial Mocking, where we create a Mock based on a class, passing the parameters for the constructor. The problem here is that there is no public constructor, and therefore, Moq can not call it..I tried using the Accessors generated by Visual Studio for MSTest, and use those accessors for the mocking, and this is what I came up with [code]
View 1 RepliesTransactions - Expose Private Fields Using A Partial Class?
Nov 12, 2010I am trying to implement transactions across multiple TableAdapters in VB.NET (using Visual Studio 2010) by extending the partial class as described in the following examples:
http://blah.winsmarts.com/2006/06/18/the-definitive-tableadapters--transactions-blog-post.aspx
madprops.org/blog/typed-datasets-and-sqltransaction/
stackoverflow.com/questions/2342289/net-tableadapter-to-dataadapter
However, when I attempt to expose any of the private fields created by the designer they are underlined in the editor with the following error:
'_adapter' is not declared. It may be inaccessible due to its protection
level.
Searching this site as well as google has not revealed anything useful, but perhpas I'm searching the wrong keywords.
Here is the code in MyDataset.vb
Partial Public Class MyTableAdapter
Public Property MyTransaction() As SqlTransaction
Get
[code]....
Possible To Override An Autogenerated Property In Designer File Using A Partial Class?
May 31, 2012I am using Linq to Sql that generated a data contract for a table. I have a date field in that table which is a non-nullable field. I need to override the auto generated property of the date field to return a specific value, something like [code]Is it possible to override an autogenerated property in the designer.vb file using a partial class? I dont want to create a new property as it is currently being accessed in n number of places and I dont want to change it in every place.
View 1 RepliesIDE :: Partial Class Code Behind A Dataset Object / Is It Running In A Separate Thread
Jan 27, 2010I am instantiating a form object in my code behind the dataset just to access some form level variables and to occasionally set a label in the navigator bar. Recently in the b2 Team version of VS2010 there are some strange errors thrown in the immediate window and then I'm tossed out of debug mode and back into the IDE. This code has been operating for some time in this project without this behavior. A team member has just reproduced the behavior in his development machine also.The error that starts the shutdown of the debug instance is this: Control accessed from a thread other than the thread it was created on.
View 4 RepliesVB - Create The Simplest Partial Class In Order To Access A Table Property
Nov 23, 2010I'm stuck when trying to create the simplest partial class in order to access a table property. I have a LINQ auto generated DataContext with:
[Code]...
.net - Write A .NETCF Partial Class To Extend System.Windows.Forms.UserControl?
May 28, 2010I'm writing a .NET CF (VBNET 2008 3.5 SP1) application, which has one master form, and it dynamically loads specific UserControls based on menu click, in a sort of framework idea. There are certain methods and properties these controls all need to work within the app. Right now I am doing this as an Interface, but this is aggravating as all get up, because some of the methods are optional, and yet I MUST implement them by the nature of interfaces.
[Code]...
Loop Inside Every Tables/columns In A Dbml File To Create New Partial Class?
Aug 6, 2009I have a class that add extra information about a column for linq2sql (see code below) right now, I have to explicitly tell what column I want that info on, how would you put that code with a loop on every column in every table from a dbml file? I was doing my test on a very very small DB, now I have to implement it on a much more bigger database and I really don't want to do it manually for every tables/columns it will take hours.
how it's being used:
Partial Class Contact ''contact is a table inside a dbml file.
Private _ContactIDColumn As ExtraColumnInfo
Private _ContactNameColumn As ExtraColumnInfo
Private _ContactEmailColumn As ExtraColumnInfo
[Code]....
VS 2008 Partial Class Files For Windows Forms Or Any Other Designer-generated Control?
Sep 24, 2009I have cooked up my first iteration of a code generator which creates the basic Entity models from a SQL Database Schema. Currently, It will scan a SQL Db Schema, and create .vb code files complete with private members and Public property declarations for every User table in the Database. My next step is having it add the basic CRUD procedures as well. Are we mere mortals able to access whatever technology allows the Partial class files created by vs to be hidden/Linked to their "parent" files, such as the Partial Class files for Windows forms or any other designer-generated control? My thinking is that it would be handy to be able to re-generate code files from the database if necessary to reflect changes in the schema, without overwriting any other properties or methods added to a class in addition to those derived from the database. SO I am hoing I can have the Auto-generated output go to a Partial Class file, and then use a regular class file of the same name for the rest of the code. My Concern is the multiplicity of files that might result, so I was hoping it is possible to "tuck them in" to the parent code file in the Class View.
View 7 RepliesConnect To Db And Insert A Record To Bank And It Works Correct?
Jan 14, 2012u have a problem with a auto number of access field,Description : in my bank(access) i have 4 field , one of them is my primary key(id) and it is AutoNumber,in my app i connect to my db and i insert a record to my bank and it works correct,but when i delete a record which id is 1 , no one of my new record has id 1 , and it is a problem in future because i should have a 40000 record and i may delete a lot of them ,
View 1 RepliesUnable To Insert A Number In To A List Box In The Correct Order?
Jul 8, 2009Ok here goes my stab in the dark again: I would like to be able to insert a number in to a list box in the correct order, at the moment the number gets put at the end, but the list box starts negative and then gets larger and the values that will be added are within the range already there, My guess would be some sort of sort function?
listbox1.items.add"inorder"(textbox1.text)orlistbox1.items.sort.add(textbox1.text)
i have seen addrange as a function. can you also tell me if i am starting to think like a VB ((novice) programmer?
Asp.net - Correct Syntax For VB Web Service Code Sql Insert FOR XML AUTO, ELEMENTS?
Nov 30, 2011I am having some trouble getting the correct syntax for a bit if code. I am using vb to insert data into a db and outputting the data as XML, here is the code
<WebMethod()> _
Public Function addTrack(ByVal tTitle As String, ByVal tAlbum As String, ByVal tGenre As String) As String
Dim conn As New SqlConnection("Data Source=MARTIN-LAPTOPSQLEXPRESS;Initial Catalog=mp3_playlists;Integrated Security=True")
Dim sql As String = "INSERT INTO Tracks (trackTitle, trackAlbum, trackGenre) VALUES ('" & tTitle & "', '" & tAlbum & "', '" & tGenre & "') FOR XML AUTO, ELEMENTS"
[code]....
The code is for a ASP.NET web service, when I click invoke on the website i get the error Incorrect syntax near the keyword 'FOR'. If I remove FOR XML AUTO, ELEMENTS everything works find, db updates but I dont get the data to output as XML. I think the issue is with the brackets required for the insert values because this issue does not occur if the SQL statement is a SELECT statement which has no brackets but i just cant figure out the correct syntax?
Ide - Ctrl-Break Suspends Code On "Partial Class FrmMain"?
Feb 1, 2012This is an IDE question for VB Express 2008. It might be a bug in the IDE, or maybe it's my fault somehow?
My main form is named FrmMain and in my application's properties I have set frmMain as my startup object. All of that seems like what a lot of coders do.
But while debugging I hit Ctrl-Break, as I have done for years, and I get an behavior in the IDE that I wasn't expecting. Upon doing so, I get the green background text and the green arrow indicating in a tooltip: "This is the next statement to execute when this thread returns from the current function." Even if I didn't have the designer document open, it automatically opens frmMain.Designer.vb in the editor and hihglights line in green. The line is of course: Partial Class frmMain which is line 2 of the file. (Yes, it's highlighting the second line of the designer-generated code.)
The thing is, frmMain seems to have fully loaded and it's my startup object. As far as I know there shouldn't be a "next statement to execute" at all because code should be idle. I don't want to see the Designer.vb document... I want to edit my own code. Even though my form is behaving just fine, could there somehow be an unfinished aspect of loading the form such that it is "not returning" from a function?
Edit: In response to a couple comments, I'm adding three screen shots:
C# - Find And Insert Into List Class Collection?
Mar 10, 2011I have class called GroupSelect and made a collection List(Of GroupSelect)().[code]...
View 1 RepliesInsert Data Into An Array Of A Class In VB 2008
May 3, 2009I declared made an array of my class like this
Dim
myClass(3) As Class1
Now when I try to enter data like this:
myClass(0).s = ("Test")
I get an error "Object reference not set to an instance of an object."
Use SQLClient Class Along With CommandText To Send SQL INSERT?
Feb 9, 2012My general method up until now is I use SQLClient class along with CommandText to send SQL INSERT, UPDATE, DELETE statements dorectly to the SQL Server from the VB app. I have a function I use that will escape any special characters within any string variables. I put a lot of vb database functions in a module that all of my forms can use. When I need to pass data around I send/add arguments to functions using regular variables, etc... I log all of my SQL queries sent to the server to a log file for troubleshooting.So far this has worked well. I know there are better ways to do this, Stored Procedures for example. But I just have not made that leap yet. I'm about to consider turning my world upside down!
I'm MOSTLY interested in creating custom Classes that represent the various objects in my database (Customers, Projects, Invoices, etc...). Then defining all of the properties each of these classes should have: Customer.ID, Customer.Name, Customer.Status, etc... and would like to "map" that Customer object to the database I'm interfacing with. I figure I can wrap all of the SQL commands into methods within each class, i.e.: myCustomer.Name = "Joe Smith"
Is It Correct To Correct Properties Values On The Fly
May 15, 2010Is it correct to correct properties values on the fly? for example: (note the .ToLower)
Public Property X() As String
Get
Return _x.ToLower
End Get
[code]....
Connect To SQL DB Receive The Code And Then Check If That Code Is Correct And If Its Correct Download Silence The Pro File?
Jun 8, 2010i'm working on a system that upgrades a basic version to a proversion but i have a payment gateway . it generates a code in an SQL DB.now i have a form in VB that has a textbox and a button how can i let VB connect to my SQL DB receive the code and then check if that code is correct and if its correct download silence the pro file. from an url.
View 7 RepliesLINQ To SQL Generic Class For Insert And Delete Operation?
Nov 27, 2009I have been writing same code for insert, update, delete with LINQ over and over again. I want to have some sort of generic function for Insert, Update, Delete operation. I read a post here like the following :
public static void Insert<T>(T entity) where T : class
{
using (OrcasDB database = new OrcasDB())
[code].....
Using IsolatedStorageFile Class To Insert/append/read Log File?
Aug 20, 2010What code would I use to accommodate isolated storage mechanisms on a Windows XP machine to place log files? I can't find my previous code but I believe the IsolatedStorageFile class wanted to place the file in C:Documents and SettingsAll UsersApplication DataLogFileNameToWriteToIsolatedStorage.txt'The problem is that on two XP machines where this has been employed, the ApplicationData folder does not exist.Was I maybe using System.IO.Path.GetTempPath();
View 1 RepliesVS 2005 Getting The Correct Number Of Attributes To Match The Correct Number Of Text Boxes?
Apr 18, 2009I have created a basic query generator which allows a user to select the Select, WHERE and criteria attributes using a number of checkboxes.However i have got stuck. In the results form i have the following code
Private Sub DisplayRecord()
RichTextBox1.Text = ds.Tables("newResults").Rows(intCurrentRecord).Item(0)
RichTextBox2.Text = ds.Tables("newResults").Rows(intCurrentRecord).Item(1)
RichTextBox3.Text = ds.Tables("newResults").Rows(intCurrentRecord).Item(2)
[code]....
The program keeps on crashing if the user does not select the corresponding amount of display records from above for the amount of attributes they want for the SELECT part of the query in the intreface in form 1.
How would i go about making something where the number of SELECT attributes selected which are listed in a string create the correct number of textbox fields in the results form (form2)
Create Insert,update,delete Query By Using Class File And Store Procedure?
Jun 5, 2011My question is How can i create insert,update,delete query by using class file and store procedure. This query is use for 3 tier.
View 2 RepliesVS 2008 Dynamic Array - Create A Public Class For Insert And Delete Data To Database
Feb 3, 2010I am new in this forum, also new in VB.Net I need to create a public class for insert and delete data to database Public Class My_DBFunctions
[Code]...