I need to construct an XML transaction of the following format[code]...
I was thinking of creating a "GetXml" function on my object that returns the XML representation of the values in the object instance.I could do all the string concatenation myself, but surely there is a cleaner way.
Is it possible to construct the name of an object (in this case, a Panel control) at runtime?
What I want to do is change the Backcolor of one Panel that is a member of about fifty panels. I can get the string of the name from the Sender in a RadioButton CheckedChanged event. So what I want to do is something like:
PanelName = sender.parent.name & ".BackColor"
PanelName = Color.Red
(I realize that the syntax above is invalid. I'm just using it to try to get the idea across.)
I can do what I need with big, fifty-element Select Case blocks, but the code is so repetitive that I was hoping there was a more elegant way.
I have a stack of 2D dicom images and want to convert to a 3D object using VB.NET. I suppose I can solve it using openGL but any clue would help a lot. Do you know a free (or at least cheap) pack to do it?
View 1 RepliesI have created a custom user control (JCUserControl), and I am using it in the Main Window. And my Main Window has no codebehind. I have this in the JCUserControl codebehind:
Private Sub ImmediateRadioButton_Checked(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles ImmediateRadioButton.Checked
SomeTextBox.IsEnabled = False
End Sub
When I run it, it fails with the NullReferenceException. If I comment out the SomeTextBox.IsEnabled = false, it runs without any problems.
Edit: Found out that I could just check if the radio buttons are loaded before doing whatever I want to do.
Private Sub ImmediateRadioButton_Checked(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles ImmediateRadioButton.Checked
If ImmediateRadioButton.IsLoaded Then
SomeTextBox.IsEnabled = False
End If
End Sub
We have a huge windows application with poor exception handling. The application throw object reference error from lot of places and the system error message is showing to users as it is using message boxes.
I am looking for a simple solution which can be used to replace this message to something user friendly for the entire application
I have a JSON object that looks like this.
{
"Errors":{
"err1":[
//* Array of err1 objects
[code]....
PD: I'm currently using Newtonsoft's JSON.Net library.
Public Sub New(ByVal jsonText As String)
Dim jObject As JObject = jObject.Parse(jsonText )
Dim jErrors As JToken = jObject("Errors")
Dim jS = New JsonSerializer()
[code]....
I want to extend the VB.NET dictionary object to not bitch about an item being already in the associative array.This is what i want to do:
[Code]...
My problem now is:How can I replace the (of object, object)line to let the dictionary be of generic/customizable type?
I add a object from a custom structure to the listbox. The only thing is, I don't know how to change the name that is displayed in the listbox? Heres my object
[code]...
So when I add it to the Listbox, it displays the "Name" variable.. My question is how to update it in the listbox? I can change the name of the object, but the name in the listbox doesnt change
I created a simple (for now) custom object:
VB
Public Class Form1
Dim AllPartFiles As List(Of Part)
[code]....
As I search a folder for files, it returns FilePath as a string for each file in the folder, then assigns a new Part.FullFilePath to the current returned FilePath, then add the Part to AllPartFiles list. So I can retrieve each Part from AllPartFiles later. But everything I try doesnt work.I know below is wrong, but might show what Im trying to do:
VB
Dim Files() As String
Files = System.IO.Directory.GetFiles(RootFolder, "*.ipt")
Dim k As String
[code]....
Create a New Part, change its values, and then add it to AllPartFiles list for later, then repeat?
I need to construct a data array and I am not sure if I can do what I need to do given the data. I probably should opt to store in a new class but that's too advanced for now
the data describes a series of points. each point has its index in a list a boolean, binary value and a list of integers of its neighbour points. so i thought it would be three columns and the third column would store a list. can you do this?
I presume i could get rid of the column dedicated to storing the integers..
I have an application in VB.Net and now I find out an API is not compatible and requires VB6. I am trying to convert it back to VB6 and have an issue in a Class Module. In VB.Net, I have:
[Code]...
If I have the following ASP.NET code (it's not complete - obviously there's a lot missing, but none of it matters):
<asp:GridView>
<Columns>
<asp:TemplateField>
<ItemTemplate>
[code]....
How can I bind the GridView so that one row is equivalent to one item in my MyListOfObjects list, and so that the data will populate and persist across page loads or postbacks? I've never done custom databinding like this before, so a full explanation would be very helpful. All the tutorials I've come across so far only talk about using GridViews directly with Database query results, and that's not what I need.
I am at a new company and I am building a wizard for a web app, (.Net/4.0). The user goes to a few separate screens during the wizard process and must return to the original screen before completion of the wizard. This is different from how they normally do this. But this is how it is TO BE DONE.
One option is to store the result of each panel in the main screen in the DB. So then, when the user leaves & redirects back. I could check for a querystring then call a datareader and populate original values appropriately.
[Code]...
I want to create some custom shapes for MS Office which we can use in house.
For example I want to create a shape named "carton box" which have three - four default places where user can add some text. It is same as other shapes or I would say just like shapes (line, flowchart, arrow etc) in MS office 2007.
Is there any way to create and reuse such a new objects, also if user don't have these shape in their toolbox and get a document which includes these shapes; he should be able to see it (defiantly in read only).
Background - I am a .NET developer and also having small knowedge of MS office development in .NET.
Looking to have a list(Of object) where i can make my own Add method, so i can do some stuff to an item when added
Is that possible at all, been looking at the net and haven't found anything.
Im having some trouble to construct a Master-Details form. When I navigate through each record on the master nothing happens on the details. This is so even if there exit a relation between the two tables in the database and in the dataset between the data table. Can anyone provide me with some samples or examples of coding how to proceed?
Furthermore I have tried to programmatically create the relation but the following error occurs: child list for field cannot be created etc
This is probably a dumb question but I have to call one of 30 or so global variables by constructing the variable name to be called from another information. However when i do that it treats it as a string. Any ideas on how to make this work?eg something like this:
Public gsNewYork As String
public sub Getinfo
dim lslocation as string
[code].....
I am going to construct a VB program that will calculate dog and cat ages, i plan to have a user interface to ask the user if they have a cat or a dog, then id like another window appear to ask how many human years of age is your dog/cat, up to the age of 20 (in human years) with that input the calculator will give you the age equivilent in dog/cat years.
View 1 RepliesI am looking for a way to read an XML file at run time and construct an Enumerator from it. I got the reading and writing all working, it's just getting all the strings to create an enumerator that's the tricky part. I could get them into a collection of strings or maybe a dictionary, but not sure how to go about converting from these into an enumerator. The goal of this is to allow users to add and delete items from the underlying enumerators and eliminate writing hard coded enumerators. My idea is to allow users to extend the program without coding. This is a Winform vb app thats not using any database but just XML files to store and retrieve things.
View 7 RepliesI have a spreadsheet with Proj Numbers: "049410-001" in column B6:B60. I have the URL to the Database: I want the links to show up in the A column with the Tag being the Proj Number "049410-001".
Also, if I could clear the A column and use it "A column" to enter the Proj Numbers and then run the Macro to enable the Hyperlinks I could eleminate the Proj number taking up 2 columns. I have 80 rows set aside for projects so it needs to go through and enable the links that have text in them.
i used =HYPERLINK(E24,B105) (E24 was another wasted cell that combined the static first part of the link, and the proj) as the formula way to do it, but I'm trying to make a Macro that does it behind the scene. but I am just getting into VBA, and I have no idea what i'm looking at when I look at a code.
I have a CheckedListBox populated with specific records from an Sql table . I want to update each record in the table, only if the checkbox checkedState = True, so far I can update all or none. This unworkable code will hopefully give an idea of what I need to do.
[Code]....
OK - for starters - I'm not even sure that the title of this thread accurately describes what I want to do - but I had trouble verbalizing it. So I will give this a try: In my application, I have a custom object, call it myObject. In addition, I have another custom object called myObjectList which is basically a List(Of myObject).
Up until this point, all of the functions that I have been working with in my BLL and DAL have been shared - I haven't needed a specific instance of my object thus far. I currently need to write a function that finds a particular myObject within myObjectList and returns to me myObject. I know that the List(Of T) has a find method, but from what I have read so far - I don't think it is what I want (doesn't it return true or false? -and also, do I need an existing object to pass to it to see if it is in the list?)
[Code]...
I am having issues adding a custom object to an arraylist at runtime.
Details of what Im trying to achieve.
My object is Fixture which represents a light. My light has the following properties:
Name, isMover, HighlightValue, UserNumber, Channels.
Channels is a dynamic arraylist which lists all the different channels of the fixture. A channel could be the lights colour or its intensity. A channel has the following properties:
Type, FeatureGroup, Value, Universe, Address, Slots and Offset.
Slots is the same again, breaking down to another ArrayList with more details.
Code:
Private Sub Patchingtest()
Dim TestFixture As New Fixture_Structure
Dim Intensity As New Channel
[Code].....
Is there any sense to set custom object to null(Nothing in VB.NET) in the Dispose() method?Could this prevent memory leaks or it's useless?!Let's consider two examples:
public class Foo : IDisposable
{
private Bar bar; // standard custom .NET object
public Foo(Bar bar) {
[code]....
I have reached a situation where it probably makes more sense to pass custom Update and Insert commands to a CommandBuilder. I see that this can be done, but I have not found an example of how. The problem that I run into is this: The CommandBuilder iterates through the rows calling the Update or Insert command as needed. Writing the SQL for those would require accessing the items in the row. How does the CommandBuilder insert the row fields into the SQL? If I were doing it myself, I would be doing something like:
For Each DR as Datarow in Datatable
which would allow me to access the items through the DR object. What does the CommandBuilder expose for custom SQL to access the items in the row?
How would I create my custom Role class based on that autogenerated class? I have read a few articles on the net but I am still lost. Can someone please show me how to do this, and what I must import(using visual basic). I want to add some validation to the string property where Role1 cannot be more than 50 characters.
Autogenerated class
[Code]...
My question is on how custom controls should be updated.
I downloaded this owner drawn custom control, which I built, then copied the DLL to the Debug folder of the project and loaded it into the toolbox from there.
I decided to use this button on another project. I was mildly surprised to see the control was still in the toolbox but it seemed to work just fine. I decided to change this custom button's behavior. The button in the toolbox referenced the old version number. So I deleted it and loaded the newly rebuilt DLL.
Now come the problems. The first application--the one where the DLL was added to the toolbox from--still runs okay, but the second application is throwing errors, saying, Type 'CButtonLib.CButton' is not defined. When I add the button to a form, it appears okay. I can change its properties and it shows up in the code windows and in the object browser. But as soon as I try to run it and it throws the errors, it no longer appears in the object browser. References in the code window lose their intellisense.
Things I've tried include:
Copying the DLL to the project's debug and release folders and loading them into the toolbox from there. Removing it from the toolbox altogether and just adding a reference then copying and pasting a button directly from the first project. Copying in a form with a CButton on it from the first project. Scouring the internet for answers Swearing at the computer.
http://127.0.0.1:47873/help/1-6644/ms.help?method=page&id=C318B79A-FA4D-4DE3-B62D-C1162BEB267E&product=VS&productVersion=100&topicVersion=100&locale=EN-US&topicLocale=EN-US
and i get the following error
[code].....
I have the following powershell script which loads a custom .NET DLL this contains the ScriptResult class, it is intern executed from a VB.NET app.
Add-Type -Path $myLibPath
$result = New-Object TheLibrary.ScriptResult
[code].....
I'm using a PropertyGrid to display properties of my custom object, but whenever I run the form and input stuff into the collection, it doesn't save... If I open up the CollectionEditor again, its blank.. heres my code
<Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", GetType(System.Drawing.Design.UITypeEditor)), MergableProperty(True),
[Code]....