WPF Discussion Boards

Re: Button Bound To Command Won't Disable

Kevin Marois12-Jul-12 6:50

Kevin Marois

12-Jul-12 6:50

Ya, it's still responds to clicks.

If it's not broken, fix it until it is

Re: Button Bound To Command Won't Disable

SledgeHammer0112-Jul-12 7:14

SledgeHammer01

12-Jul-12 7:14

Copy & pasted your code into a test project and it disables just fine. Make sure your DataContext is set properly or it won't know where the command is. I.e. put a break point on your CanExecute handler and make sure its actually getting called.

Re: Button Bound To Command Won't Disable

Kevin Marois12-Jul-12 7:37

Kevin Marois

12-Jul-12 7:37

Ok, I see what's going on. isTesting is somehow reverting to false by the time the CanExecute is called.

Stay tuned.....

If it's not broken, fix it until it is

Re: Button Bound To Command Won't Disable

Mycroft Holmes11-Jul-12 13:19

Mycroft Holmes

11-Jul-12 13:19

Try this, change you button to use a Click="" event instead of a Command.

Never underestimate the power of human stupidity
RAH

Re: Button Bound To Command Won't Disable

RobCroll12-Jul-12 13:21

RobCroll

12-Jul-12 13:21

I haven't got VS at hand at the moment but couldn't you just do something along the lines of:

<Button IsEnabled="{Binding RunTestButtonEnabled} /Button>

Where RunTestButtonEnabled is a property in your ViewModel.

"You get that on the big jobs."

Re: Button Bound To Command Won't Disable

PaulLinton16-Jul-12 20:08

PaulLinton

16-Jul-12 20:08

Whenever you change isTesting you will need to call

RunCommand.OnCanExecuteChanged()

(If it isn't, you might want to make isTesting a property and call OnExecuteChanged from the Setter)

Changing Cell Color dynamically in Datagrid using C#.net

palaniappan v10-Jul-12 21:41

palaniappan v

10-Jul-12 21:41

Hi All,

I am using datagrid in wpf.actually my requirement is used to show different color in particular cell after every two minutes like first two minutes we need to show blue then Red but values in that cell should not get changed.I have shown the color in the cell using datatrigger through Xaml but i need to add that dynamically into the datatemplate and show the cell coloring.so,if any one knows about this please help me out of it.

Thanks in Advance Confused | :confused:

Palaniappan

Re: Changing Cell Color dynamically in Datagrid using C#.net

Pete O'Hanlon10-Jul-12 23:55

Pete O'Hanlon

10-Jul-12 23:55

OK, this is fairly simple to achieve with the use of a Timer, a public property and a value converter. What you need to do is create a property that you will bind to as part of the collection that you are binding your DataGrid against. The timer will be used to change the value of the property.

The value converter simply converts this value into an appropriate colour. Your Background will be bound to the property, and you will use the value converter as your converter.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: Changing Cell Color dynamically in Datagrid using C#.net

Mycroft Holmes11-Jul-12 1:02

Mycroft Holmes

11-Jul-12 1:02

Oh I know start the timers slightly offset on each record. Duck dodge weave rock hide under!

Never underestimate the power of human stupidity
RAH

Re: Changing Cell Color dynamically in Datagrid using C#.net

Pete O'Hanlon11-Jul-12 1:04

Pete O'Hanlon

11-Jul-12 1:04

Mycroft Holmes wrote:
Oh I know start the timers slightly offset on each record. Duck dodge
weave rock hide under

Or just use one timer and update ALL records. I prefer your solution though.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

silverlight databinding

Bhushan futane10-Jul-12 19:04

Bhushan futane

10-Jul-12 19:04

hiii..
can any one tell me how to make batabse connectivty wid controls lik datagrid....

Re: silverlight databinding

Abhinav S10-Jul-12 19:44

Abhinav S

10-Jul-12 19:44

Try http://beyondrelational.com/modules/2/blogs/433/posts/12021/different-ways-to-bind-data-grid-in-silverlight.aspx[^].
You can also always check out the msdn site.

Build your own survey - http://www.factile.net

Make a textbox act like Excell Cell

Vimalsoft(Pty) Ltd9-Jul-12 7:29

Vimalsoft(Pty) Ltd

9-Jul-12 7:29

Hi All

i am converting an Excell spreadsheet into an application. So i am doing automatic calculations like Excell do , for some of the cells(textbox) should allow a user to enter the minus sign "-" , and this automatically minus value entered. So my issue here is if th the users enters that character it breaks my app's calculations. Does anyone have any idea how to bypass this ?

Thanks

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa[at]dotnetfunda.com
http://www.Dotnetfunda.com

Re: Make a textbox act like Excell Cell

Pete O'Hanlon9-Jul-12 7:57

Pete O'Hanlon

9-Jul-12 7:57

Vuyiswa Maseko wrote:
So my issue here is if th the users enters that character it breaks my app's
calculations. Does anyone have any idea how to bypass this ?

Without knowing how your application works, no. I don't know what code you've actually written, so how can I tell you what's wrong with it. I will say one thing though - if you can cope with positive numbers, you should be able to cope with negative ones. After all, taking away is merely adding a negative number.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: Make a textbox act like Excell Cell

Vimalsoft(Pty) Ltd9-Jul-12 8:20

Vimalsoft(Pty) Ltd

9-Jul-12 8:20

hi Pete

Thanks for your reply. i am just looking at ideas without any coding examples. What i need is a logic to bypass this.

lets take a Cell in an Excel spreadsheet,you normally can enter numeric values and by default anything that has no sign "-" is a "+" so now when it comes to negative in Excel it will subtract the value in the cell from somewhere. So in .e.g asp.net or silverlight , if you want to mimic that Excel behavior how can do that , because immediately when that value is entered it changes the data in the textbox not to fall under "int" or "decima" because there is a special character.

You know what ?

i just Figured out.

i will keep the value as is and when it is being calculated against another Field , i will sum what needs to be summed and subtract on any field that has that sign

Sometimes when you explain the problem to someone you might find the solutiion

Thanks

Re: Make a textbox act like Excell Cell

Pete O'Hanlon9-Jul-12 8:44

Pete O'Hanlon

9-Jul-12 8:44

Vuyiswa Maseko wrote:

Sometimes when you explain the problem to someone you might find the
solutiion

Often the way my friend, and a 5 for such enlightenment.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: Make a textbox act like Excell Cell

Vimalsoft(Pty) Ltd9-Jul-12 8:53

Vimalsoft(Pty) Ltd

9-Jul-12 8:53

Re: Make a textbox act like Excell Cell

PaulLinton16-Jul-12 20:11

PaulLinton

16-Jul-12 20:11

Are you aware of this article A Calculation Engine for .NET[^]

Re: Make a textbox act like Excell Cell

Vimalsoft(Pty) Ltd18-Jul-12 22:34

Vimalsoft(Pty) Ltd

18-Jul-12 22:34

Thanks nice

Write Comments on Image

varaprasad20209-Jul-12 3:59

varaprasad2020

9-Jul-12 3:59

How to Comments on image at dynamically write sometext
on image in Silverlight.

Re: Write Comments on Image

Pete O'Hanlon9-Jul-12 4:15

Pete O'Hanlon

9-Jul-12 4:15

If you just want to display dynamic text over the top of an image that is displayed in the UI, you simply need to place a TextBlock on top of the image and set the Text as appropriate.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: Write Comments on Image

vinodkrebc9-Jul-12 8:22

vinodkrebc

9-Jul-12 8:22

<Grid>
<Image source=""/>
<TextBox Text="Enter comments here.." VerticalAlignment="Center"/>
</Grid>

The above code will put a TextBox in the center of the image where you can enter your comments. Further if you want to have an image with commented text that also you can create a dynamic Bitmap image.

Cheers!
Vinod

http://www.exploresilverlight.com
Cheers!
Vinod

Immage Annotation

varaprasad20209-Jul-12 3:57

varaprasad2020

9-Jul-12 3:57

How To create Image Annotation in Silverlight,Please
Help me.

Working with WPF Web browser control

AshishGoyal086-Jul-12 0:46

AshishGoyal08

6-Jul-12 0:46

Can someone atleast help me to find the mouse pointer location over the webbrowser control in WPF.
The only constraint is that you cannot create an event of the webbrowser control.

And just for the records,

Point p = Mouse.GetPosition(webBrowser1);

is not working !

Re: Working with WPF Web browser control

darshan_ur12-Jul-12 2:06

darshan_ur

12-Jul-12 2:06

You can get the Mouse Pointer as bellow:

Point p = this.PointFromScreen(Mouse.GetPosition(this));
txtX.Text = p.X.ToString();
txtY.Text = p.Y.ToString();

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.