WPF Discussion Boards

Problem with silverlight data grid

29-Oct-09 6:52

Deabdy21 wrote:
How can I call this propery in the code behind page of ASP.net(c#)

You can't, since the asp.net code behind runs on the server and the
Silverlight app runs on the client.

You can use javascript to communicate with the Silverlight plugin
from HTML...

HTML Bridge: Interaction Between HTML and Managed Code[^]

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

ravi.vellanky28-Oct-09 23:40

ravi.vellanky

28-Oct-09 23:40

I'm using a silverlight2 datagrid in my applcation. While loading it shows very well and after the selection of one row in the grid to change the values and then click on the update button it it works very well and showing the grid very well.

But after the updation while showing the grid if we move the scroll bar up and down i'm missing the row. It shows an empty row there.

Need help to show the row while scrolling grid view scroll bar.

-ravi

Re: Problem with silverlight data grid

Mark Salsbery29-Oct-09 6:55

29-Oct-09 6:55

Can you post a small example that demonstrates the problem?

I don't know about anyone else, but I have no idea what your
"updation" code is doing...

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

New To silver light

kKamel28-Oct-09 20:41

kKamel

28-Oct-09 20:41

First of all just to give you a little background i am a web developer with one year exp. I have went to the Microsoft site and got everything concerning Silver light but i think there is a gap i still do not know how to work with it, I was not able to continue the tutorial i got from MS.

Could any one tell me what should i know as a prerequisite.
Should i know WPF becuase i really do not know a thing about it.
Is silver light has alot of post backs on server, which leads to performance issues?Is it heavy or light?
Is there any certification on silverlight?

Thanks

Re: New To silver light

Mark Salsbery29-Oct-09 7:03

I am fresher in silver light, from where should i start ?

29-Oct-09 7:03

khalil.kamel wrote:
what should i know as a prerequisite

Get Started Building Silverlight 3 Applications[^]

And the documentation: Silverlight[^]

khalil.kamel wrote:
Should i know WPF

Knowing WPF makes the programming part of Silverlight much easier
but it is not required. If you learn to write Silverlight apps,
learning to write WPF apps will be simpler.

khalil.kamel wrote:
Is silver light has alot of post backs on server, which leads to performance issues?

Only if you write code that does postbacks. Silverlight apps run on
the client - Silverlight is NOT ASP.NET.

khalil.kamel wrote:
Is it heavy or light?

Huh?

khalil.kamel wrote:
Is there any certification on silverlight?

Currently, no, as far as I know. If you go through the
"Read Tim Heuer’s 8-part blog series on getting started"
section at the "Get Started Building Silverlight 3 Applications"
link I posted above, you'll be well on your way.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

koolprasad200328-Oct-09 20:09

koolprasad2003

28-Oct-09 20:09

hi all

i am fresher in silverlight from where should i start to learn Silverlight
which version should i use ?

i have VS 2008 , will it support silverlight programming ???

help really appreciated

thanks in advnace
koolprasad2003 Smile | :)

Rating alway..... WELCOME

Be a good listener...Because Opprtunity knoughts softly...N-Joy

Re: I am fresher in silver light, from where should i start ?

Mark Salsbery29-Oct-09 7:09

Re: I am fresher in silver light, from where should i start ?

29-Oct-09 7:09

koolprasad2003 wrote:
where should i start to learn Silverlight

On the "Get Started" page, of course: Get Started Building Silverlight 3 Applications[^]

The documentation: Silverlight[^]

koolprasad2003 wrote:
which version should i use ?

For new development, there's no reason to use anything but the
latest version - Silverlight 3.

koolprasad2003 wrote:
i have VS 2008 , will it support silverlight programming ???

Yes. Install all the items on the "Get Started" page I linked to above,
in order, and your development system will be all set for Silverlight
development.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

koolprasad200329-Oct-09 23:43

koolprasad2003

29-Oct-09 23:43

cheerssss...thankx Rose | [Rose]

Rating alway..... WELCOME

Be a good listener...Because Opprtunity knoughts softly...N-Joy

Re: I am fresher in silver light, from where should i start ?

eslsys3-Nov-09 4:01

eslsys

3-Nov-09 4:01

Some beginner resources:

http://www.dotnetspider.com/resources/29798-SilverLight-for-Beginners.aspx[^]

and Tim Heuer's excellent series:

http://timheuer.com/blog/articles/getting-started-with-silverlight-development.aspx[^]

Parsing binary TCP messages

earlgraham28-Oct-09 12:08

28-Oct-09 12:08

I'm new to silverlight. My web application "Might" attach to a TCP port that outputs a binary compressed TCP message for my web data. I'm trying to decide if I should
1)parse it in silverlight
or
2)write a middle-ware application that unpacks it and then sends it to my silverlight App.

Thanks for any recommendations.

Programmer
Glenn Earl Graham
Austin, TX

Mark Salsbery29-Oct-09 7:14

29-Oct-09 7:14

earlgraham wrote:
My web application "Might" attach to a TCP port

What kind of "web application"?

For example, ASP.NET: Silverlight apps run on the client, ASP.NET code runs on
the server, so how you implement this depends at least in part on where
the code will be running.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

earlgraham29-Oct-09 10:32

29-Oct-09 10:32

Code is running on a client webpage. It streams data to a web user for live updates.

Programmer
Glenn Earl Graham
Austin, TX

Mark Salsbery29-Oct-09 12:10

29-Oct-09 12:10

earlgraham wrote:
Code is running on a client webpage. It streams data to a web user

So this code is in the Silverlight application then?
In that case, doing everything in Silverlight seems
the most logical.

I'm curious how you are able to provide a listener socket
in an application running in a browser...

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

earlgraham30-Oct-09 5:43

30-Oct-09 5:43

There is much I don't know about silverlight but there seem to be support for TCP connectivity in silverlight. Here is a good post on it.

http://weblogs.asp.net/mschwarz/archive/2008/03/07/silverlight-2-and-sockets.aspx[^]

My only concern is working through a binary message byte by byte to convert it into my managed code. I know there are several libraries that are not supported by Silverlight, and I hope that I don't get stuck.

Programmer
Glenn Earl Graham
Austin, TX

Mark Salsbery30-Oct-09 6:50

30-Oct-09 6:50

earlgraham wrote:
there seem to be support for TCP connectivity in silverlight

Connecting, yes, but listening for connections?

earlgraham wrote:
working through a binary message byte by byte to convert it into my managed code

The BitConverter class is handy for that. For strings,
the Encoding class can help.

Of course, if you're unable to parse and/or decompress the data
from Silverlight code with its limited .NET framework, then you
will probably want to consider serializing the data in a format more
Silverlight-friendly.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

earlgraham30-Oct-09 9:33

30-Oct-09 9:33

It will not be listening. Only requesting data from a server that hosts the data. Sorry I miss understood.

Yeah its a tough decision, there are several options for me.
1) I can edit the data server, but its an established C++(unmanaged) application. I will have several of the senior programmers grilling me on whether I screwed up anything.
2) I could write an app that uses a different port. Then all my silverlight traffic goes to that port. I convert the data and forward. (this is my preferred approach)
3) OR Convert in the silverlight app.

What fun!!!

Programmer
Glenn Earl Graham
Austin, TX

Mark Salsbery30-Oct-09 9:54

how to export wpf datagrid to excel?

30-Oct-09 9:54

I suppose option 2 is the most flexible, since you can
re-shape the data and use any transfer/serialization mechanism
available to Silverlight apps.

Have fun! Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Viji Raj28-Oct-09 11:44

Viji Raj

28-Oct-09 11:44

Can any one give a sample code of how to export datagrid to excel?

Re: how to export wpf datagrid to excel?

Christian Graus28-Oct-09 13:33

Christian Graus

28-Oct-09 13:33

And the journey is complete. This is a clueless post. You can't export a datagrid to Excel. You would export the DATA to Excel, and you'd do that the same way if you were using WPF or not. Ergo, this is not a WPF question and it's one easily answered with a google search.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

ListView Column formatting

hb5213421428-Oct-09 9:07

hb52134214

28-Oct-09 9:07

Is there a way to change alignment of a column within a WPF ListView. I've got a Cell template like the following:

<DataTemplate>
   <TextBlock Text="{Binding Path=C1}" HorizontalAlignment="Right">
<DataTemplate>

This doesn't work though because I've got to change the cell container's Horizontal alignment.

Also, when using a ListView.ItemContainerStyle, is it possible to trigger off the column by a name or index? As an example, how would one make the background of a column red from the ItemContainerStyle?

Thanks in advance!

Death8U29-Oct-09 4:34

Death8U

29-Oct-09 4:34

Are you talking about the content alignment of column cells or the column alignment within the listview?

For content:

I think you may want to use HorizontalContentAlignment="Right".

hb5213421429-Oct-09 6:34

hb52134214

29-Oct-09 6:34

On which object do I set HorizontalContentAlignment? The TextBlock doesn't have it. I'm sure the container that the text box is in has it, but how do I reference that object to set the value?

Death8U29-Oct-09 7:20

Death8U

29-Oct-09 7:20

My mistake, I was thinking TextBox, not TextBlock.

For TextBlock Use: TextAlignment="Right"

hb5213421429-Oct-09 8:47

hb52134214

29-Oct-09 8:47

Although, this works if the TextBlock's width is specified, I really want to right align to the ListView's grid column and allow the TextBlock's width to expand or contract with the column.

By specfiying a width to the TextBlock, when the column is expanded beyond the width of the TextBlock, the text though aligned to the right of the TextBlock is not aligned to the right of the column.

I believe that one needs to modify the parent's panel's content alignment; though, how do I manipulate that style. Can I use a trigger within a Control template for the ListBoxItem? If so, how do I switch on the column number so that only specified columns are right aligned?