Can I Create an enum on Runtime, or change Enum values or member Names ?

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  - 1
    - Need Help with a System.Windows.Forms.BindingNavigator Hey, You can not convert a textboxcontrol to a label or other way arround. If you try to do such a conversion, you will have an error in design time already. "InvalidCastException " You can convert any control to Object Type or the other way arround. an examle Private Sub Button1_Click( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ' this is a buttons click event, and we know the sender is a button. ' If we directly type "Sender." , the intellicence will provide aus a very limited list like: Sender.Equals, Sender.getType, sender.ToString, because senders type is Object ' To get all the properies of the sender, we need to convert it. Just like: CType (sender, Button).FlatStyle = FlatStyle.Flat 'We could also conver it to a textbox, and we would not have any error displayed in desing time CType (sender, TextBox).UseSystemPasswordChar = True 'But in Run time, we would have the error, because the compiler can not convert a button to a TextBox End Sub Invalid cast exception : http://msdn2.microsoft.com/en-us/library/system.invalidcastexception.aspx By the way, it is a very big pleasure if I can help. TR ->Turkey (from) NL ->Netherlands (live in) Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 2
    - Polymorphism? How can you avoid "switch" statements? Hi ALL, I tried this>> I've tried the following and it works without an exception thrown. Any ideas why a Timer as Timer1 does not throw an exception Regards, S_DS ____________________________________________ 'Add an imports statement. 'The previous project name becomes the NAMESPACE. 'The CLASS name is after the dot. Imports Star_On_A_Wotsit .Star Public Class Form1 Private Sub PictureBox1_Click( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click Dim myPen As New Pen(Color.Turquoise) 'Draw a star with myPen, pen Width is 10 pixels, ' at 100,100 ' size of 50 pixels with 10 radial arms. newStar(PictureBox1, myPen, 10, 100, 100, 50, 10) End Sub Private Sub Form1_Load( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase .Load Timer1.Interval = 1000 Timer1.Start() End Sub Private Sub Timer1_Tick( ByVal sender As Object , ByVal e As System.EventArgs) Handles Timer1.Tick Me .Text = Now.ToLongDateString & " " & Now.ToLongTimeString End Sub End Class with the TIMER an exception is not thrown, any ideas why In other words try this into the code above instead>> newStar(Timer1, myPen, 10, 100, 100, 50, 10) My DLL project name is called Star_On_A_Wotsit hence the namespace name in the IMPORTS statement above. Here is the STAR CLASS code if you want to play with it >> Public Class Star 'Pass an object such as a PICTUREBOX with a PEN of a WIDTH 'with myX1,myY1 as the star centre and a SIZE in pixels 'with however many radial arms you want as numOfArms. Public Shared Sub newStar _ ( ByVal obj As Object , _ ByVal somePen As Pen, _ ByVal width As Integer , _ ByVal myX1 As Integer , _ ByVal myY1 As Integer , _ ByVal Size As Integer , _ ByVal numOfArms As Integer ) 'Set the Pen width. With somePen .Width = width End With 'X1,Y1 hold the calculated points. Dim x1 As Integer Dim y1 As Integer 'Count is used in a FOR NEXT loop. Dim count As Double 'Create a variable to hold 2 times Pi Dim twoPi As Double = 2 * Math.PI 'Now draw the STAR!! For count = 0 To twoPi Step twoPi / numOfArms x1 = Size * Math.Sin(count) + myX1 y1 = Size * Math.Cos(count) + myY1 obj.CreateGraphics.DrawLine(somePen, x1, y1, myX1, myY1) Next End Sub End Class Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 3
    - Writing a plug-inable application in .net 2 S_A_S wrote: What does "VSTA" exactly mean Visual Studio Tools for Applications. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 4
    - Now() returns value that is not the same in VB.Net as it was in VB6? Wanted to put this out to save someone else from the time I spent figuring this out: This happened in VB.Net under VS2005, using DAO3.6 and Access2003. The upgraded application was originally VB6, DAO3.51 and Access97. In VB6 had a module level var named mLastUpdate As Date. Var was set to "Now" (current system date and time) when Name property was set. Public Property Name() As String Get Name = mName End Get Set(ByVal Value As String) mName = Value mLastUpdate = Now mDirtyData = True End Set End Property Data was saved to a recordset with the name and lastupdate fields set: myRS.Fields("Name").Value = mName myRS.Fields("LastUpdate").Value = mLastUpdate myRS.Update() Then retrieved the row just inserted in order to get the Autogenerated ID number from the database table. myRS = myDB.OpenRecordset("SELECT ID FROM Company WHERE LastUpdate=#" & mLastUpdate & "#;", dao.RecordsetTypeEnum.dbOpenSnapshot) Code worked fine in VB6 - last added/updated row was returned; however, in .Net the row was not returned. When running the SQL inside Access using the date/time from the table it still would not return the row. Tried formatting mLastUpdate as it was being assigned to the recordset value, but still no luck. Within the property SET, I then tried formatting: mLastUpdate = FormatDateTime(Now, vbGeneralDate). Now it works perfectly like it did before. I could have used @@Identity (which also works) but wanted to keep the code as close to the original as possible to avoid introducing more problems. I'm not sure if the change that effects "Now()" is happening under Access or .Net, but wanted to make people aware that it is evidentally out there. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 5
    - Storing values from a file permanently so that the file is not necessary once compiled The 1's and 0's will never change. I am not showing these columns, I will loop through the array and if it is a 1 then specific code will be processed, if it is a 0 then different code will be processed. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 6
    - how to execute form ? Hello i have 5 forms in a project. Each form has seperate program.The problem is every time when i press F5 only form 1 exeucutes. I want to execute (test) each form separatly. What is the procedure Thanks Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 7
    - How do I set delay between code? shizuka.a wrote: ...after some code which interacts with a server, What is the proper code format that I need to add The correct answer to your question is dependent upon how you are interacting with the server (ie what communications protocol are you using)...both tcp/ip and serial communications can be setup with events that respond to data recieved Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 8
    - XP/Vista ADOX References I built a large application on XP and a tiny but needed component uses ADOX for table creation and persistance in an Access database. I couldn't build the project on Vista until I deleted the ADOX reference and replaced it because msadox.dll has moved from Windows/System32 to Program Files\Common Files\System\ado. If I wanted to support a single build on both operating systems am I going to have to resort to late binding That's not an easy dll to late bind to. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 9
    - Unexpected results from PrintDocument1 PrintPage event This is my code; I expect two pages of output, but get only one. 'one button on form, used default names and settings for everything Private Sub Button1_Click( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click PrintDocument1.DefaultPageSettings.Landscape = False 'portrait mode PrintDocument1.Print() 'begin print End Sub Private Sub PrintDocument1_PrintPage( ByVal sender As Object , _ ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage Dim nFont As New System.Drawing.Font( "Arial" , 12, FontStyle.Regular) 'any font will do e.Graphics.DrawString( "Printed on page 1" , nFont, Brushes.Black, 250, 400) e.HasMorePages = True 'go to the next page e.Graphics.DrawString( "Printed on page 2" , nFont, Brushes.Black, 250, 600) 'still printed on page 1! e.HasMorePages = False 'if I omit this, printing continues until I abort it End Sub What am I doing wrong Fred :-(---// Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 10
    - Array Help And if you like ArrayList and you use Visual Studio 2005/.NetFx 2.0, you may also like the generic list: Dim myList As System.Collections.Generic.List(Of Class1) No more cast-from-object-to-the-type-I-added-to-the-list mumbo-jumbo - it is all nice & strongly typed. Best regards, Johan Stenberg Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 11
    - Trapping Mouse Clicks Hi, My application uses an external authentication engine. The user has to enter codes into two text boxes. This method works for all of our other applications. However, my particular application is done on a touch screen (no keyboard). I built an on-screen keyboard that pop-ups when users click (touch) a text box. I would like the same keyboard to pop-up when the user uses the authentication engine. I figured out how to get the authorization window's handle as well as the handles to the two text boxes. In addition, I have figured out how to send text to these text boxes. My question is, how do I trap when a user clicks the text box Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 12
    - Delete row from datagridview view Thanks yowsing. Your 3-events solution solved the problem for me. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 13
    - How to set the WMI Privilege on VB 2005? Once I enable the privilege for WMI on VB 2005. Dim options As ConnectionOptions options = New ConnectionOptions() options.EnablePrivileges = True What CODE AND Where I put the code to specify the privile like SHUTDOWN, REMOTE SHUTDOWN, BACKUP, RESTORE, AUDIT, SECURITY, CREATETOKEN....ETC ....ETC... Guys any help is super appreciated. Thanks, PRJUANL. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 14
    - Run-time error 339: Component 'MSCOMM32.OCX' or one of its dependencies not correctly registerd: a file is missing or invalid. It is also very possible that you are infected by a virus that requires this particular file. Whilst this file is still missing from your system, the virus program is most likely disabled. BEAWARE that fixing this error by getting the file may actually fix the virus (if it is a virus) I'm just speculating, but its good to be aware of such things. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 15
    - Splitting Images I have a Windows VB application that views and copies TIF images, some single pages some multiply pages. What I need to do is to for each page in the tif is to break to image file into separte pages, How can I do that Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 16
    - TXT File to MS Access gr8 work done..this may work for the thread starter... Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
- Next
  - 1
    - Creating a view meter. Hi. I am working at VU meter at the moment and I also have the same problem. That is, grabbing the microphone volume and show it in progress bar. Should I use winmm.dll for it in vb.net I understand that I am able to use this module to get output volume but how I should get input volume If possible, could anyone provide some simple examples on writing this in VB.net Thanks in advance. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 2
    - Where is the Fill() method? Dim cmd As New OleDbCommand( "Insert Into Test " & _ "(Name1,Name2,Name3)Values( , , )" , connection) cmd.ExecuteNonQuery() In your first example it looked like you were trying to insert into the "Customer" table. In this example you appear to be going for the "test" table. Could that be your issue Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 3
    - populating an Access database using visual basic 2005 THANK YOU!!!!!! Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 4
    - Messagebox Results as variables Hello all. I've been working on a project where i need to store the result of a messagebox with Yes/No buttons to a variable for later use. I remember having learned how to do it in class, but that was in November and I have since then forgotten. Can anyone here help Thanks! Kyle Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 5
    - OracleConnection Scope I have a class that creates an oracle connection to a database that is compiled code and works fine. i pass an oracleconnection object back to the calling program and it uses it perfectly, until the code fully runs and it is time fo ruser imput and a form shows. the user does what ever he does then a query is launched that uses the conneciton object again and all of a sudden it is closed. I am not sure i under stand how that happens. when i put a watch on it you can see that the string stays in place until the user clicks on the combobox. right when the program enters the code the connectionstring is gone Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 6
    - Adding data in one column together From your code I take that you are using the DataSet Designer, if this is the case you need to do this: 1) In the DataSet Designer, right-click the AmountsTableTableAdapter and choose Add Query. This will open the TableAdapter Query Configuration Wizard 2) Click Next 3) Choose Select which returns a single value 4) Inside the multiline Textbox type this SELECT sum(winnings) as Total from AmountsTable Click Next 5) Uncheck the Fill a Data Table and Check Return a DataTable Type the Name of the Query e.g. GetWinnings 6) Click Finish Where your red code is type this lbl1.text = AmmountsTableTableAdapter1.GetWinnings() This should do what you want if not it should give you a real good start Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 7
    - Text Alignment Justified Can you give us a more detailed explanation of what you mean by "justified" What outcome are you trying to achive Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 8
    - How to seperate data from the Rightextbox ? Hi Riquel Finally i have to save many thanks for u r coding..... i really appriciate U R valuable code ,,,,,,, many thanks to .MSDN forum.. i could manage to sort out my problem regards suis Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 9
    - Possible to update a VB 2005 control's 'enabled' property via code while in the IDE environment? I have created a class based on the forms.button class. Adding the control to the Toolbox, I can add the control to my forms. The problem is that I have a property called 'Mode' that changes the control's other properties as needed. For example, while in the design window, if I set the Mode property to <something>, I want to automatically set the said control's Enabled property to false. It works because I can run the app and the control is in fact disabled but while in design mode the Enabled property still shows True. I can change just about any other property in the same way and the change is reflected in the control's property window just the Enabled property fails to refresh. I am relatively new to VS 2005 so forgive me if this doesn't make sense but is it me, by design, a bug and if so, any workarounds Thanks, Robert Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 10
    - How to access standard icons How to access standard icons, like the "back", "forward", open and stuff i want to put then in my menus, the save etc can be accessed by inserting standard items but the IE "back" any eternal free sites Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 11
    - Not able to edit DOTNET User control when calling from VB (Unless you you doible click inside the control) Hi, I develeoped a dotnet user control containing picturebox to display TIFF files. The purpose of this control is, want use in VB. I am able to display the image in VB form, but not able to view the control properly in VB, I mean with all features. Eventhough image size is bigger, control not displaying the scroll bars unless I double click inside the control. Control is not getting focuss unless you double click inside the control. But same control working very well when I try to call from windows forms in dotnet. Also would like to know, how to get the properties displayed in VB. Current, the user control display only default properties. If somebody get back on this ASAP, that will be great help since it is bit urgent. Thanks Vasu Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 12
    - Listbox coding help ok so im still somewhat nooby at this but i ran into a problem i have a list box show up after a button is pressed so i wanted to when any option is clicked in the list box to give me a way to know which one it was so i could make other certain things show up accordingly thanx ahead Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 13
    - Hide form thanks for the help . To bad you cant on start up but I guess for security reasons. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 14
    - MySQL I clicked on Data and then Add New Data Source. From there I used the userid and password I had created for the specific database (schemea) I am using. VB does the coding behind the scenes. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 15
    - Limitations of InStr() ? Hey guys. Ok, so to get the big taboo out of the way, this question might or might not be VB6 related. Kind of hard to tell, since I am usually working with C++. I have problems with a Visual Basic MACRO in Excel 2003. (Yet again, this might not be the forum to ask, but Ill give it a shot) This command will for some reason not work. Code Snippet searchPos = InStr(searchPos, WorkLog, searchString, vbTextCompare) I've managed to track it down to the WorkLog which is a String. What are the limitations of contents of the string to be able to compare it with the "searchString" I can not give any examples of the data that is contained in WorkLog since I'm working for the army and the content is Nato Classified. What I can say though is that it contains a lot of text with different kinds of symbols like : ' ! , . $ and so fourth. It is also quite large, but does not surpass the 65k limit of the String. Is there a way to remove these signs, since I really dont need them if that is why it's bugging my script I've tested with the following "dummy" values, but the script still crash at the InStr function without completing the loop it is in. test data: Code Snippet Dim searchPos as Integer searchPos = 0 Dim WorkLog as String WorkLog = "Find Find me: 1245732052094" Dim searchString as String searchString = "Find me" Cheers! Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?
  - 16
    - Need Advice Creating a Generic Class You can test the type of T. But it isn't a good solution. I don't think you should use generics here. Code Snippet Public Class Form1 Sub New () InitializeComponent() Dim s As New Class1( Of String ) Dim i As New Class1( Of Integer ) Dim g As New Class1( Of Guid) Debug.WriteLine(s.EmptyValue.ToString) Debug.WriteLine(i.EmptyValue.ToString) Debug.WriteLine(g.EmptyValue.ToString) End Sub End Class Public Class Class1( Of T) Public Function EmptyValue() As T Dim temp As T If GetType (T).Equals( GetType ( String )) Then Dim o As Object = String .Empty temp = DirectCast (o, T) Else If Not ( GetType (T).Equals( GetType ( Integer )) Or _ GetType (T).Equals( GetType (Guid))) Then temp = Nothing End If End If Return temp End Function End Class If you are testing the Type of T and then branching, and if you are casting to and from object (boxnig/unboxing) then you are losing the benefits of generics and the code looks ugly. In a situation where generics is a good solution, you can work with T directly, there will be no casting to and from object, and no testing for type as you treat them all in the same way. If your class is of T, then T can be anything, so the only methods of T that you get are those that everything has - those of Object. To get more methods you introduce type constraints. If you add a constraint that T must implement IComparable, then you can sort arrays of T. If you add a constraint that T must have a public parameterless constructor, then you can create a New T. etc etc. You want to work with String, Integer and Guid. That's a mix of value and reference types, and they don't share many Interfaces (er... IEquatable(Of T) and IComparable I think). So you can't add many constraints, and don't have much to work with when dealing with objects of type T. Tag: Can I Create an enum on Runtime, or change Enum values or member Names ?

ZadehDyn

I need to fill my enum values from datatable. Is there any way to do it with VB.Net.

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Re: Can I Create an enum on Runtime, or change Enum values or member Names ?

Muhammad Akhtar Shiekh

Hi Dear,

Runtime enum creation is not possible in .NET (According to my little bit knowledge about .NET).......

but this link can help you for alternative ways of dynamically enum genration.

http://www.thescripts.com/forum/thread514597.html

Regards

Muhammad Akhtar Shiekh

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Re: Can I Create an enum on Runtime, or change Enum values or member Names ?

Sanguin Developers

This article might help;

http://msdn.microsoft.com/msdnmag/issues/06/08/CuttingEdge/default.aspx

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Re: Can I Create an enum on Runtime, or change Enum values or member Names ?

cybertaz69

hi Zadeh

Enum are tools for design time to let the programmer have a engilsh word that repersents a value....

At runtime the code doesn't care what the engish word is it just wants the value. So a collection would be a better opption at run time... Collections come in all different types so its easy to find one that fits your dataset....

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