Control Binding of a bool isn't updating - Windows Forms Discussion Boards

C# Windows Form Application with WCF on Windows XP

xavier999914-Jul-10 16:06

14-Jul-10 16:06

Hi guys,

Just a quick question -

I have a Windows Form (C#) with a WCF reference built on VS 2008, Windows 7.
Everything works ok. The form connects to the service, gets the data I need, and outputs it to the form.

Once I deploy/move the application to a Windows XP Pro machine - nothing works!

I have 3.5, 3.0 and 2.0 frameworks installed with all the updates.

Has anyone had a similar issue before? Or knows what could be going wrong? Perhaps I need to release the app with all references inbuilt?

Thanks for your help!

Xav.

Re: C# Windows Form Application with WCF on Windows XP

Eddy Vluggen16-Jul-10 0:36

Eddy Vluggen

16-Jul-10 0:36

xavier9999 wrote:
Once I deploy/move the application to a Windows XP Pro machine - nothing works!

That's way too vague.

Did you get an exception? You're not swallowing those, are you?
Checked the EventLog for details?
Does it 'try' to launch the executable, or does it even refuse to load? (Does the mouse-cursor change?)
You mentioned that three frameworks being present, what framework is the project using?
Verified that DEP is off? Right-click the executable and open the properties, might say something like "blocked".

I are Troll Suspicious | :suss:

Re: C# Windows Form Application with WCF on Windows XP

Abhinav S20-Jul-10 18:33

Abhinav S

20-Jul-10 18:33

xavier9999 wrote:
nothing works!

Do you get some errors?
Specify them here and someone might be able to help you.

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

My latest tip/trick - Silverlight *.XCP files

Re: C# Windows Form Application with WCF on Windows XP

spn21-Jul-10 18:59

spn

21-Jul-10 18:59

Hi,
Try installing "ASimpleProjectSetup"
This utility helps Windows display the apps developed in .NET.
You can download it from Microsoft website.
If case you cannot find any link for this, search for the .NET framework setup and you will see a link for "ASimpleProjectSetup" at the bottom of the page.

Please tell me whether this solution works or not.

Save DataGridView To Database

.NetDeveloper0910-Jul-10 21:31

.NetDeveloper09

10-Jul-10 21:31

How can i save values from datagridview to database

Re: Save DataGridView To Database

TimmL11-Jul-10 8:58

TimmL

11-Jul-10 8:58

here is a good example
http://www.switchonthecode.com/tutorials/csharp-tutorial-binding-a-datagridview-to-a-database[^]

Re: Save DataGridView To Database

Peace ON11-Jul-10 19:53

Peace ON

11-Jul-10 19:53

By little googling[^], see what I found.

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Control Binding of a bool isn't updating

TimmL9-Jul-10 2:56

TimmL

9-Jul-10 2:56

hi,

I want to bind a bool property of my class to the "Enabled" property of a control, but when I change my bool property, the enabled state of my control isn't changing, here an example

<br />
// bool Property<br />
private bool boolValue = false;<br />
public bool BoolValue<br />
{<br />
    get { return boolValue; }<br />
    set { boolValue = value; }<br />
}<br />
<br />
// binding<br />
button1.DataBindings.Add("Enabled", this, "BoolValue", false, DataSourceUpdateMode.OnPropertyChanged);<br />
<br />
// later in code<br />
BoolValue = true;<br />
// enabled state of my control isn't changing<br />

How can I solve this problem?

Regards,
timm

Re: Control Binding of a bool isn't updating

Richard Blythe9-Jul-10 6:00

Richard Blythe

9-Jul-10 6:00

The "DataSourceUpdateMode.OnPropertyChanged" is a flag that sends button1's "Enabled" value to the current record's "BoolValue" field.
It does not tell the datasource to send updates to the control.

What you need to do is force the binding context of the button to update it's index. This will cause: button1 to read the changed value.

The mind is like a parachute. It doesn’t work unless it’s open.

Re: Control Binding of a bool isn't updating

darkelv9-Jul-10 7:43

darkelv

9-Jul-10 7:43

You'll need to implement the OnBoolValueChanged event or OnPropertyChanged after the boolValue = value assignment.

http://krisvandermotten.wordpress.com/2006/10/19/properties-with-property-changed-event/[^]

http://social.msdn.microsoft.com/forums/en-US/csharpgeneral/thread/1e742062-bf41-48cf-bd2f-54bdc9c5b78d[^]

Personally I prefer the OnXXXChanged because I'd rather not write a gigantic switch in the OnPropertyChanged handler.

Dataset and Crystal Reports

.NetDeveloper093-Jul-10 23:05

.NetDeveloper09

3-Jul-10 23:05

Hi
I am using dataset control for crystal reports inside the dataset i type tables and then pass it to thte crystal report.
Using this way i have a feeling that if i have 300 reports the dataset control will definately become heavy and the application will get slow.
My question is:

1) Is there any other way of doing it using untyped data set without using the typed dataset?
2) Is there a way i can use it without a dataset control?

Regards

Re: Dataset and Crystal Reports

darkelv10-Jul-10 18:50

darkelv

10-Jul-10 18:50

You can "pull" data directly from source without using needing to use dataset.

You should only passing the datatables that are needed for each report, so whether 3 or 300 reports it should not matter, unless you are talking about generating 300 reports all at once.

Re: Dataset and Crystal Reports

.NetDeveloper0910-Jul-10 21:27

.NetDeveloper09

10-Jul-10 21:27

you are right but what i want to do here is:

1) Not to use the dataset control in which i create tables for each report.

if i create a datatable it is not accepting to through values in the crystalreport datasource.
However all the columns are the same on both sides.

Re: Legal Billing Software

Eddy Vluggen4-Jul-10 1:45

Eddy Vluggen

4-Jul-10 1:45

You're near bankrupt, aren't you? I can tell by the way that you're trying to save money on advertising Smile | :)

I are Troll Suspicious | :suss:

Re: Legal Billing Software

Peace ON5-Jul-10 19:26

Peace ON

5-Jul-10 19:26

Please read this[^] guideline before you post anything in the thread.

If you want to put any product world wide then post the article in
"Product Showcase" section of code project.

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Re: Legal Billing Software

Abhinav S5-Jul-10 20:32

Abhinav S

5-Jul-10 20:32

You are not even on the right website(forget the forum).

The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.

Hiding a Button in a DataGridView

john_paul30-Jun-10 8:16

john_paul

30-Jun-10 8:16

I have a DataGridView in a windows form that I need to be able to make the datagridviewbutton visible or invisible depending on the value of another column. I can not figure out how to make this happen when I bind the datatable to the datagridview.

Any help would be appreciated.

Thanks

John

Re: Hiding a Button in a DataGridView

Peace ON30-Jun-10 22:19

Peace ON

30-Jun-10 22:19

For that you need to use RowDataBound event. Try following code.

protected void MyDataGrid_RowDataBound(object sender, GridViewRowEventArgs e)  
{  
   if (e.Row.RowType == DataControlRowType.DataRow)  
   {  
      if (condition)  
      {  
          (e.Row.FindControl("buttonid") as Button).Enabled = false;  
      }  
   }  
}

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Re: Hiding a Button in a DataGridView

freakyit30-Jun-10 22:20

freakyit

30-Jun-10 22:20

hi man,

this could be a possible solution but never tested..
In the CellValueChanged event you have to check your specified cell against your condition and than try:

<br />
dataGridView1.Rows[rowIndex].Cells[buttonCell].ReadOnly = true;<br />

<br />
dataGridView1.Rows[rowIndex].Cells[buttonCell].Frozen = true;<br />

hope i could help Smile | :)

T9 predictive text in Windows Forms

G-Tek29-Jun-10 6:24

G-Tek

29-Jun-10 6:24

Hey - we're looking at trying to implement a T9-based predictive text capability (like on your cell phone/PDA) into our Windows forms application (this is running on a standard Windows/embedded environment, NOT on a smart phone). Has anyone seen or worked with anything like this in the past?

Cheers,
Chris

Re: T9 predictive text in Windows Forms

Peace ON29-Jun-10 21:02

Peace ON

29-Jun-10 21:02

For that you need to do following.

1. Maintain one dictionary which will serve as base for auto suggestion.
2. Bind that dictionary with your textbox.
3. Track keypress event of your textbox and suggest world if it is starting
from the character user enters.

That's All.

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Re: T9 predictive text in Windows Forms

G-Tek30-Jun-10 0:57

G-Tek

30-Jun-10 0:57

Thanks for the reply. However, I'm not sure if you're following one of the key points I was trying to accomplish - T9. I'm not working by standard letter entry, but rather by T9 entry (or the newer XT9). In the very least this would involve adding the equivalent T9 values for each word in the dictionary, but it still wouldn't account for word usage/popularity. Obviously there are ways that this can be coded completely from scratch, but I wanted to first see if anyone was doing something similar using an already establish method, API, etc.

Thanks again.

Re: T9 predictive text in Windows Forms

darkelv30-Jun-10 2:30

darkelv

30-Jun-10 2:30

Yes definitely possible, though probably not entirely in .NET, and don't think there are API beside the standard Win32 API, and you got to code most of the libraries.

You'll need a light and efficient database for the dictionary, an algorithm to retrieve the words fast, an algorithm to account for the most recent used words, adding and removing words from the dictionary.

You'll need some way to hook the keypress, and sending the character or control characters (backspace, etc) to the control.

Did a Palm version for a friend's company for the keyboard, they did the windows mobile version using C++. Though without much capital, the product is currently sort of dead. Frown | :(

http://www.osnews.com/story/15389/Review-TenGO-2.0-and-TenGO-Thumb[^]

Re: T9 predictive text in Windows Forms

Eddy Vluggen4-Jul-10 1:44

Eddy Vluggen

4-Jul-10 1:44

G-Tek wrote:
Has anyone seen or worked with anything like this in the past?

Not T9, but been playing with something similar. Kinda started with a Wiktionary-download, gives you a decent dictionary. Once that was in place, started fetching websites to do a statistical analysis.

Read a few sites in a loop (of the correct target-audience) and mark how often a word follows the previous word. Thus resulted in a crash of my machine Smile | :)

Filtered out all noise-words for the analysis, as there's a lot of words that might follow the word "this". The remark on the target-audience would be important because "this" often has a different meaning on the CodeProject-site than in normal conversation.

..and that's when I stopped playing with it, my harddisk isn't that large. You wouldn't need the complete resultset to give decent options as a prediction; only the top 5000 or so. Still, sounds like a lot of work, and the method that I described here is probably one of the less efficient ways to do it.

I are Troll Suspicious | :suss:

Setting the size of the Windows Media Player DRM license window

tjeffries23-Jun-10 16:19

tjeffries

23-Jun-10 16:19

I'm trying to do something that should be simple. We have a DRM encripted WMV file, and we need to control the size of the activation window that comes up while the license is being verified. I've seen files that do this, but we haven't been able to find a way. Apparently this is set by Windows Media Player. How do we tell WMP what size window we want?

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