I'm trying to get a BindingNavigator to add new data and save it to a database. I am using this
vb
Private Sub BindingNavigatorAddNewItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigatorAddNewItem6.Click HistoryBindingSource.AddNew() End Sub Private Sub BindingNavigator9_RefreshItems(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigator9.RefreshItems Me.Validate() Me.HistoryBindingSource.EndEdit() Me.HistoryTableAdapter.UpdateAll(Me.EyeBaseDataSet.History) Me.Close() End Sub
It's telling me UpdateAll isn't a member of the HistoryTableAdapter. What does that mean and how do I fix it? This is an SQL datasource.EDIT: If I change "UpdateAll" to just "Update" that error goes away, but when I try running the program it gives this error which makes zero sense to me.
"An unhandled exception of type 'System.InvalidOperationException' occurred in EyeBasePRO.exe
Additional information: An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object."It shows that in the designer.vb form and highlights the class name.
In the following code i get a warning at line 59:Warning 1: Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated.and.. At line 78 I get this Warning:
Warning 2 Property 'SelectedCustomer' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.
The program compiles and runs well, but i cant' undesrtand the reason for these warnings. Any Idea ?
1: Public Class Form1 2: 3: 'Form level members 4: Private objCustomers As New ArrayList
Cannot appear to be able to get this function to not have the above error.Private Function GetIncidentActions(ByVal FromAgentID As Integer, ByVal ToAgentID As Integer, ByVal incidentAction As Integer, ByVal ActionDate As Date) As String
After making a databinding with an simple acces dbase with 16 rows ,three columns, id, channel id, and device, making a dataset with datagridview, all automatated by visial studio in a vb form . the dbase has a function to store the devicetype to a certain channel in a program to create commands send to the drvices.
When i chance an item of the dataset from a extra combobox item outside the datagridviewwith tostring and want to Me.TableAdapterManager.UpdateAll(Me.deleriusDataSet)
I get the fault
An UPDATE or DELETE query cannot contain a multi-valued field. the update button of the datagrid view gives the same error, and a sql command to update only the changed field also.
I am building VS2008 app using Data Source Wizard. The Data connection is working. The Table Adapters are built. The DataSet is created and I can preview data through it. I used drag/drop from the DataSource/DataSet to put a DataGridView onto a form.I can view the records there. I can delete records there. But when I update or add records from there, all of the data is not getting changed. I am connected to ISeries DB2. If I add a new record the only field that get populated in the database is the key field (the first field in the file). If I update a record in the database, the only field that gets changed is the key field.
I'm developing a tiny program to update a single field in an MSSQL database table as needed.The user enters in an ID number, clicks Find Patient, and the TableAdapter output gets filtered into a DataGridView.Out of the entire table, I'm only displaying 3 columns (two locked for editing), and hiding the key column. When I go through the TableAdapter Configuration Wizard and have it build the Update queries, it complains: "Updating queries cannot be automatically generated because your SELECT query does not include some primary key columns. Do you wish to add primary key columns to your query?"
I'm "cloning" objects in my code. For instance: objClone = objOriginal My question is: Does the assignment operator in VB.NET 1.1 do a member-by-member copy of the objOriginal to objClone or does objClone simply point as a reference to memory referenced by objOriginal?
i changed a class variable to shared so i can access it in all instances of the class, but it caused an error. what is causing this, and how can i fix it?
I have 2 tables Table A & Table B Table A has the table values that I want to be populated in a datagridview control.The challenge is that column 1 in table A contains an ID(foreign key) to a name field that is a located in table B. I need the datagrid to have the first column be a combobox that displays the names(from Table B) that are already in table A via the ID's, but reference the populating values from Table B. So that when you bring down the combobox you would be choosing from Table B data but populating table A with the ID and you would see a name there instead of an ID.[code] How do I populate my DS dataset with Table B? And how can I create a link to these two tables using a bound datagridview control?
I get this error if I follow these steps: Change property Y of an object (an associated entity property) Attempt to submit changes At this point the value of Y and the value of X (the underlying key) are not in agreement -- LINQ to SQL apparently doesn't synchronize these until GetChangeSet is called.An expected error occurs due to some business logic or database level constraint during the update operation.At this point the value of Y is in agreement with X because GetChangeSet was called.Change the value of Y to Nothing (aka null).Call GetChangeSet.
The error occurs on the last step because the value of X and the original value of X (returned by GetOriginalEntityState) are different, and the new value does not agree with Y? Is that why? Is this a bug in LINQ to SQL. Must be because I don't see the same behavior if I change Y to another (non-null) value instead during step 5. What's the right way around this? I can see a few ways:
Discard the DataContext when an error occurs and leave the UI as-is. I don't like this because then optimistic cocurrency change conflicts cannot be detected. The new context doesn't have the original values in it that were populated at the same time the UI was populated, so if the UI has any stale values in it, they will cause data in the database to revert.Refresh the datacontext (OverwriteCurrent) and leave the UI as-is. I don't like this for the same reason as #1.Refresh the datacontext (OverwriteCurrent) and re-populate the UI. I don't like this because then the error message just presented to the user does not show the user the error they made and allow them to correct it. It also discards all the other changes the user may have made.When the error occurs, explicitly retrieve the key for Y that corresponds to the original value of X and reset Y, then call GetChangeSet to re-synchronize X (X is read-only or private so I can't reset it directly). This seems to work, but seems like a hack, and may require lots of code for other similar errors.
I know I have done this before and as I remember it should be really easy. But for some strange reason I can't do it now and I am about to jump off the building.I will make it simple:Two tables, one is just a list of products and their code.The other table: "details" has a field named product. I want to store only the code there.In the second table's entry form, I am putting a combobox. This combo box should display the list of products, their names, but depending on which one is selected, the code is what is passed to the table "details". Currently If I set the display member to product and the value member to code it still pases the product to the binded data source.
I have a database that holds information about a particular job. One of those things is a customerID. CustomerID links to another table containing customer details. I have a combo box attached to a custom object that holds customerID as the valuemember and CustomerName as the displaymember.The JobDetails holds the customerID info. How do I set the default selection in the combobox based on the ValueMember of the combo box?
Sub SomeInterfaceMember() Implements ISomeInterface.SomeInterfaceMember End Sub
while in C# you do it explicitly like this (which can only be called via the interface)...
void ISomeInterface.SomeInterfaceMember(){}
or more simply, implicitly like this...void SomeInterfaceMember(){} // Note the name matches the interface member However, regarding VB, I can also do this...
Sub SomeRandomMemberName() Implements ISomeInterface.SomeInterfaceMember End Sub
In other words, the method that handles the implementation can have a completely different name than the interface's member name.I'm just wondering if there's something similar to this in C#. (Yes, I know I can simply do an explicit interface, then access it via another 'wrapper' member with a different name that simply delegates to it, but in VB.NET?
I'm attempting to use a function which exists in a class (IDautomation.vb) I found online.I use the "Imports" statement at the top of my class/form. When I attempt to call a function from the Imported class I get an intellisense error:
"Reference to a non-shared member requires an object reference" I guess I thought by using the "Imports" statement I could access any of the properties/methos from that class.
I have the 'resources' folder in my project and it contains a text file called dictionary.txt, which i refer to in my code as My.Resources.dictionary.Split(New String() {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries)This works perfectly.
I then added a second text file called definition.txt, but when i refer to My.Resources.definition.Split(New String() {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries)This gives me an error 'Definition is not a a member of 'Resources'
I ran into a strange issue over the weekend while I was working on an asp.net mvc project in vb.net. I created an extension method to convert an integer to the corresponding month it is associated with. I tested the extension method in a console application so I know it is working. In my asp.net mvc project I have a view and want to call the extension method but I get an error that the extension method is not recognized. I imported the namespace it was contained in and still couldn't shake the error. Any idea what's going on? The code is below.
If I declare and instantiate an instance of class B within class A, how do I make instances of class A member objects/variables accessible from class B?
I'm having issues with my scrolling text I looked at some examples and tried following em but now I get error when I try and add this following lines to 1 of my tabs basicly I'm making scrolling credits
I created a new project. I copied files from the original VS 2008 project into the new VS 2010 an used "include" in VS 2010.I get an error saying "Error 108 Maximum number of errors has been exceeded."
It seems that EVERY field in the webformsuser-controlsASCX's has the error message "fieldName' is not a member of".I tried a delete the contents of the ASCX and ASCX.vb for a specific ASCX. Compiled and that page had no errors (although the other pages did). Copied back the contents ASCX and compiled (although the other pages did). That page had no errors. Added back the code-behind in the ASCX.vb and compiled. Same error.'fieldName' is not a member of They fieldName can be anything. Textboxes, hiddens, checkboxes, etc.
what am I doing wrong? I have spent hours on this I am hoping I am just missing something simple.
If I override a member (e.g AutoSize in the Button Class), then the intellisense no longer appears in the editor, forcing me to re-decorate the property. Is there an option somewhere that I need to check? ETA: Here's a code sample:
[Code]...
The intellisense explaining the AutoSize property doesn't appear.
I'm trying to get my program to go to the memberlist.php of a phpBB2 forum and gather all the links to the members websites. Example: [URL] I want the program to go to that website and save all of the websites (the ones that have the "www" image) to a list inside the program. I have no idea how to do this, but that's not all, considering most forums have several pages of members (this one has 32 at the moment) it has to go through all of the pages and gather all the links from every page..
Dim instance As Graphics Dim blackPen As New Pen(Color.Black, 3) Dim point1 As New Point(100, 100) Dim point2 As New Point(500, 100) e.Graphics.DrawLine(blackPen, point1, point2)
Error1'Graphics' is not a member of 'System.EventArgs'.
vb.net Dim stringMessageID3 As New Regex("(?<=<a href=member "" & stringMatches2(i).ToString).*?(?=.htm>)", _
The syntax i have is wrong, i'm trying to append the stringMatches2(i).ToString onto <a href=member i know "&" concatenates but i'm not sure what else i have done wrong.
Warning1property 'Events' shadows an overloadable member declared in the base class 'MarshalByValueComponent'. If you want to overload the base method, this method must be declared 'Overloads'.
