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Steve69 wrote:
I have a main form which contains all the functions/methods for my application.
 Well, overlooking that design flaw....
Steve69 wrote:
I keep getting a "Reference to a non shared member requires an object reference" exception when i try and call them even though they are public
It isn't the fact that it is public that is stopping you. It is the fact that the property can return different values for different instances of the form (or any class for that matter). So, it need to know which instance - even if there is only one instance in the application.
If you need a property to get/set the same value regardless of which particular instance of a class you are using then you need to declare it as static (or Shared in VB.NET)
Do you want to know more?
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Does anyone knows how to install visual studio 2002 or 2003 in windows me or 98? 
I want to install it, and i can´t use windows xp on my machine cause it is too advanced for windows xp  , so I have to use windoes me but since microsoft removed the windows me support I am lost right now,
Thank you for your time.
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Unfortunately, VS.NET 2002[^] and VS.NET 2003[^] both require Windows 2000 or later. The resulting executables can be run on Windows 98 and ME, however.
Charlie
if(!curlies){ return; }
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Hello.
I want to use the ColourButton for the .net compact framework from Jon Nethercott
(http://www.codeproject.com/cs/miscctrl/PocketPCColourBtn.asp). The button itself works fine, but how can I add it to the toolbox? I click with the right mouse button on the toolbox, then “add element”. The Element “Colour Button” is added, but it’s disabled. What can I do?
Thanks very much
Stefan
(Austria)
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I created a setup project for my comapny using .NET Setup and Deployment project. I want to change the registry enviroment variables for the current user, which I easily add in their registry editor. When I install the setup in fresh computer, its instals ok and shows the updated environment variables (Right click on my computer -> properties -> Advanced -> Environment variables) but they did not work. If i open the dos window (cmd.exe), and run "set", its did not display the updated environment. Even reboot didn't fix it. I have to manully edit those value in order to take effect, which is not acceptable at user point.
It seems like very basic feature to me, when you deploy the application, you want to change the environemnt variables. Is this a knows bug or I am missing something.
Please help me..
Shail Srivastav
shailsrivastav@hotmail.com
blog
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Given a required width is there any way to find the ideal height of a label? (IE so all the text is displayed)
MOO!!
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Label in .net are auto resizable by default . It will sized automaticlly according to string whiech you are going to assign it .
You don't care about it
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Thanks for your reply satya. If tried setting autosize to true for a label but it just autosizes the width, leaving the height at one character. I wanted to autosize the height. Ie fix the width and make the height adjust for multiple lines with the words wrapping.
I did find a way of doing it eventually I'll post it when I've had a look at my development PC.
Unless I'm missing something and you can use autosize while fixing the width.....
MOO!!
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If you want to use multilpe lines , You can use Height property of label but when you write text in that it will again show one line . Now if you want to show the text in whole label . First go into font properites of label and set size according to your choice .
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In MFC there are PropertySheets e.g. to display possible app options. In C# and .NET are there good examples for it ?
Thanx - Ralf
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Try: Google "PropertyGrid"
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I have two assemblies, X and Y.
Y defines a class X.Foo
X references Y.
In X I have the following:
System.Type t = System.Type.GetType("Y.Foo");
This fails.
If instead I write:
System.Type t = System.Type.GetType("Y.Foo,Y");
it works.
I was expecting that the explicit assembly specifier should not be required given that I am referencing the assembly allready.
Can somebody explain the subtleties of GetType in this situation?
cheers,
-=jarl=-
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In a DataGrid with a data source of DataTable,
What's the difference between a column_changed event and a column_changing?
When editing the data table during runtime, it first enters the column_changing method, then the column_changed one.
I want to invalidate the user's editing in a column according to a certain criterion.
Thanks!~
Here is Rebecca.
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Rebecca Gao wrote:
What's the difference between a column_changed event and a column_changing?
changed is in the past tense
changing is in the present continuous tense
Therefore:
* The ..._changing event fires as the change is taking place, giving you a chance to cancel the change or other action you need to complete before the change is completed.
* The ..._changed event fires after the chance has been made, giving you a chance to perform actions that rely on the change having successfully completed.
Do you want to know more?
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Hi,
Do any one know how to call a windows service in the web service. A line of code will be great.
Thanks in advance,
Sreepathi.
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I am looking for a combined tree and grid control.
It should display nodes in a hierarchy (showPlusMinus and showRootLines) like a tree view. Mostly, it should look like a treeview.
It should also display columns with column headers, though, like a grid. The master/child datagrid doesn't really do a good job for this.
I've tried starting with grid, and adding my own PlusMinux boxes and RootLines, and I've tried starting with a treeview, and breaking up each line into columns with column headers. Either way, it's going to be a ton of work so that the custom control has good support for both grid stuff and tree stuff.
I realize that I can purchase for $$$ money several different grids that do trees very well, but I'm cheap. I'm surprised that no-one has published source code to a free version that I can use.
Does anyone have something like this they'd like to share?
Thanks,
Norman R.
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Hi,
I've been working on an async download class. It's basiclly complete but I need to raise some events from a thread started with BeginInvoke. When I raise the event it works fine but if I want to modify the user interface I understand that it needs to be running on the UI thread (I checked the InvokeRequired property and it is true). What I'm trying to work out is how I can automatically run the events on the thread the class was created in. Any help would be appreciated!
On a side-note I looked at the .net 2.0 implementation of an async download (in the WebClient class) but it uses alot of new classes (like AsyncOperation) which I cant use in 1.1.
Dan
EDIT: Oh and heres the class incase anyone wants to take a look at it. 
http://homepages.paradise.net.nz/dannyres/FileDownload.cs[^]
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You need to Invoke again on the thread the gui runs from.
when the event fires and you receive it on your form instead of updating your control directly you would need to do it through another delegate.
public delegate void UpdateControlHandler(string text);
private void UpdateControl(string text)
{
this.mycontrol.Text = text;
}
private void GotMyEvent(object sender,MyEventArgs e)
{
if(this.InvokeRequired)
{
object [] args = new object[1];
args[0] = e.text;
this.Invoke(new UpdateControlHandler(this.UpdateControl),args);
}
else
{
this.UpdateControl(e.text);
}
}
hope this helps
it works for me
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Although this does work its not really what I would like.. I'm wondering if theres a way todo this so its automatically on the UI thread and whoever is using the class doesnt have to use Invoke..? Is this even possible? :P
Dan
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Hi
can any one tell me
1) how can i reach to Yahoo messenger from my vb.net
program and identify add and remove ID and ... and how can i send & recieve
message from my program to/from other yahoo messenger id?
(Port number that yahoo used and ...)
2) how can i make my id that used in my program always on?
i hope you understand what i mean !!!! 
Best Regards
M.Khayatan
MkhProgrammer
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I have a nested loop in which I am looking at username and password if they click more than 3x's I lock them out... However, my loop won't work... Here is the code
While DR.Read()
'If i <= 3 0 Then
If User = DR("DTLoginID").ToString() And Pwd = DR("DTPassword").ToString() Then
Response.Redirect("Broadcast.aspx")
ElseIf User = DR("DTLoginID").ToString() And Pwd <> DR("DTPassword").ToString() Then
MsgBox.alert("The Username and/or Password does not exist; Please Try Again")
Me.txtUser.Enabled = True
' i = i + 1
ElseIf User <> DR("DTLoginID").ToString() And Pwd <> DR("DTPassword").ToString() Then
MsgBox.alert("The Username and/or Password does not exist; Please Try Again")
Me.txtUser.Enabled = True
' i = i + 1
End If
'ElseIf i > 3 Then
'MsgBox.alert("No User Exist")
'Response.Redirect("Broadcast.aspx")
' End If
End While
It will go straight to the (marked out items) elseif i > 3 and do the redirect.... any suggestions..
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You might want to try an Exit Sub after each of the if traps. You might be getting stuck in your while loop after one of your conditions has been met.
While DR.Read()
'If i <= 3 0 Then
If User = DR("DTLoginID").ToString() And Pwd = DR("DTPassword").ToString() Then
Response.Redirect("Broadcast.aspx")
Exit Sub ''''<addded code="">>>>
ElseIf User = DR("DTLoginID").ToString() And Pwd <> DR("DTPassword").ToString() Then
MsgBox.alert("The Username and/or Password does not exist; Please Try Again")
Me.txtUser.Enabled = True
' i = i + 1
Exit Sub ''''<addded code="">>>>
ElseIf User <> DR("DTLoginID").ToString() And Pwd <> DR("DTPassword").ToString() Then
MsgBox.alert("The Username and/or Password does not exist; Please Try Again")
Me.txtUser.Enabled = True
' i = i + 1
Exit Sub ''''<addded code="">>>>
End If
'ElseIf i > 3 Then
'MsgBox.alert("No User Exist")
'Response.Redirect("Broadcast.aspx")
Exit Sub ''''<addded code="">>>>
' End If
End While
Best of luck
Forever Developing
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While DR.Read()
If i <= 3Then
If User = DR("DTLoginID").ToString() And Pwd = DR("DTPassword").ToString() Then
Response.Redirect("Broadcast.aspx")
ElseIf User = DR("DTLoginID").ToString() And Pwd <> DR("DTPassword").ToString() Then
MsgBox.alert("The Username and/or Password does not exist; Please Try Again")
Me.txtUser.Enabled = True
' i = i + 1
ElseIf User <> DR("DTLoginID").ToString() Then
MsgBox.alert("The Username and/or Password does not exist; Please Try Again")
Me.txtUser.Enabled = True
' i = i + 1
End If
'ElseIf i > 3 Then
'MsgBox.alert("No User Exist")
'Get to the screen where you want user to know that user is been locked
exit while
' End If
End While
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I am interested in dividing my components into run-time and design-time components. I want to do this so that code I only need for design time is not included in the run-time component, which is shipped to an end-user. The design time component would only be needed by the programmer when making use of the design-time capabilities of my component, such as using it in the Windows form designer.
It does not appear this is possible in .NET. I can still certainly divide my component into two different assemblies, one for run-time code and one for design-time code. But it seems there are two reasons that I can not make the sort of clean division in which both assemblies need to be available at design time while the run-time assembly only needs to be available at run-time.
The first reason is that the classes I use for my design time code, derived from System.ComponentModel, do not necessarily only pertain to design time functionality. According to the documentation on type converters, as an example, they might apply both to design time and run-time. There seems no way to specify that a type converter, which I would put in my design-time assembly should only pertain to design-time code.
Secondly to use the classes in my design time assembly at design time, I must provide attributes for the types and properties to which the design-time classes pertain in my run-time assembly and, since the attributes refer to classes in another assembly, the run-time assembly must reference that other design-time assembly. This effectively ties my run-time assembly to these classes which I only want to use at design time.
Has this issue been addressed or discussed anywhere ? It does seem to me wasteful that .NET classes which I create only for design-time functionality needs to be distributed to the end-user by a programmer who uses my component, even though the end-user will never need the functionality. Furthermore I see no way to tell .NET that the casses which I create for design-time functionality should only be used at design time and not run-time.
Because of these issues, I have a feeling that there must be a way to create a design time assembly for my component which does not have to be unnecessarily shipped to end-users as part of run-time execution. Does anybody know how to do this ?
Edward Diener
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