Update silverlight xap file - WPF Discussion Boards

CBenac1-Sep-09 12:19

1-Sep-09 12:19

Correcting the subject: The e.Result is a List collection and not a TList object as mentioned before.
I need to know how to copy it to another List collection.
I've attempted in a variety of ways but always endup with a compiler error that doesn't accept the e.Result as a valid List

modified on Tuesday, September 1, 2009 6:59 PM

Re: How to copy a TList?

Pete O'Hanlon1-Sep-09 22:02

Pete O'Hanlon

1-Sep-09 22:02

Have you tried the following?

TList list = new TList();
list.AddRange(e.Result);

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Re: How to copy a TList?

Edbert P1-Sep-09 16:46

Edbert P

1-Sep-09 16:46

Your e.Result will most likely be a collection object that inherits from ICollection.
From the threads it looks like it is a List<customer>. If it is then you can simply use

List<Customer> myObjectName = (List<Customer>)e.Result;

Otherwise if you really want to make a copy of the list use LINQ[^]

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Edbert
Sydney, Australia

Re: How to copy a TList?

CBenac2-Sep-09 3:04

CBenac

2-Sep-09 3:04

"Your e.Result will most likely be a collection object that inherits from ICollection."

You are right and by watching the compiler error I can see it is from "System.Collections.Generic.IEnumerable" and the List is from "System.Collections.Generic.List" thus the problem.

I've changed the Service Configuration to return a List instead of a collection but it didn't help. The only way to create a local copy of the list returned by the web server was doing the folllowing:

for (int i = 0; i < e.Result.Count; i++)
{
myClass.Add(new myClass()
{
AcctNo = e.Result[ i ].AcctNo,
Name = e.Result[ i ].Name,
Address = e.Result[ i ].Address,
Phone = e.Result[ i ].Phone,
EMail = e.Result[ i ].EMail
});

}

Re: How to copy a TList?

Edbert P3-Sep-09 16:20

Edbert P

3-Sep-09 16:20

Since this is Silverlight, when you generate the WCF service reference you can actually select whether you want the web service to use existing class structure in its service definition instead of System.Collections.Generic.List.

To do this right-click on your service reference in the Silverlight project, choose "Configure Service Reference" and on the panel tick on "Reuse types in all referenced assemblies", or if you have a specific assembly pick the specific assembly containing the class definition.
If you do the above the e.Result should be of type ObservableCollection<customer> instead of a generic list.

Hope that helps.

Edbert
Sydney, Australia

How to capture Child Name and the Parent Name in a tree view in WPF + MVP

Krishna Aditya1-Sep-09 2:09

Krishna Aditya

1-Sep-09 2:09

Hello All,

I am working on WPF application with MVP architecture. My question is :

how to get the name of the selected node in a tree? Also, i need to get the name of the parent node that the selected node belongs to.

Node1

A1
A2
A3
A4
Node2

A1
A2
A5
A8
Node3

A1
A2
A9
Asin the treeview, it has 3 nodes and each node having children. If I select the Child A2, from Node3, how can this be stored in a string? and also I should get the parent of this A2(which is Node3).

So, on selection of A2 in Node3, I should have the names of A2 and its parent node.

I am doing it in C#.

Please help me.

Thank You,
Ramm

Re: How to capture Child Name and the Parent Name in a tree view in WPF + MVP

Richard MacCutchan1-Sep-09 12:15

Richard MacCutchan

1-Sep-09 12:15

You probably need to check the events raised by TreeView. I would expect that a click or select event of some form is raised when the user clicks a node, and the code behind should be able to capture that event, which will likely have a reference to the selected node. Each node in the tree has a parent property that can be used to traverse the tree to its main root. Try a search for TreeView in MSDN and look at the Properties and Events.

Update silverlight xap file

Nekkantidivya31-Aug-09 19:18

Nekkantidivya

31-Aug-09 19:18

Hi,

I am working on a silverlight project. In this when I try to publish my code It failed and it didn't gave me any error. So I took the old application for which publish is successfull and modified it with the changes in the code. Now the .xap file is now updating my chages and it is displaying the old functionality.

If anyone have any idea to make the publish successfull or update the .xap file , please reply me.

Thanks in advance.

Re: Update silverlight xap file

zlezj1-Sep-09 0:49

zlezj

1-Sep-09 0:49

The old XAP file probably lingers on somewhere in a cache. You could try to rename the XAP file, or add a random number in the source parameter of the object tag like

<param name="source" value="XapFile.xap?12345"/><br />

Re: Update silverlight xap file - Sample code

zlezj1-Sep-09 2:23

zlezj

1-Sep-09 2:23

OK, here's an extended version. This code appends the file date/time to the XAP file name. This way you'll keep the caching of already loaded XAP files and you don't have to remember to change the number...

<%@ Page Language="C#" AutoEventWireup="true" %>
<script runat="server">
    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

        const string XAP = "ClientBin/XapFile.xap";
        System.IO.FileInfo fi = new System.IO.FileInfo(Request.MapPath("./" + XAP));
        string timeStampXAP = fi.LastWriteTime.ToString("yyyyMMdd_HHmmss");
        source.Text = String.Format("<param name=\"source\" value=\"{0}?{1}\" />", XAP, timeStampXAP);
    }

</script>
<%@ OutputCache Duration="1" VaryByParam="None" Location="None" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Test</title>
    <style type="text/css">
    html, body {
	    height: 100%;
	    overflow: auto;
    }
    body {
	    padding: 0;
	    margin: 0;
    }
    form {
    	height: 100%;
    }
    #host {
	    height: 100%;
	    text-align:center;
    }
    </style>
    <script type="text/javascript" src="Silverlight.js"></script>
    <script type="text/javascript">
        window.onload = function()
        {
            document.getElementById('host').focus();
        }

        function onSilverlightError(sender, args) {
            var appSource = "";
            if (sender != null && sender != 0) {
                appSource = sender.getHost().Source;
            }

            var errorType = args.ErrorType;
            var iErrorCode = args.ErrorCode;

            if (errorType == "ImageError" || errorType == "MediaError") {
                return;
            }

            var errMsg = "Unhandled Error in Silverlight Application " + appSource + "\n";

            errMsg += "Code: " + iErrorCode + "    \n";
            errMsg += "Category: " + errorType + "       \n";
            errMsg += "Message: " + args.ErrorMessage + "     \n";

            if (errorType == "ParserError") {
                errMsg += "File: " + args.xamlFile + "     \n";
                errMsg += "Line: " + args.lineNumber + "     \n";
                errMsg += "Position: " + args.charPosition + "     \n";
            }
            else if (errorType == "RuntimeError") {
                if (args.lineNumber != 0) {
                    errMsg += "Line: " + args.lineNumber + "     \n";
                    errMsg += "Position: " + args.charPosition + "     \n";
                }
                errMsg += "MethodName: " + args.methodName + "     \n";
            }

            throw new Error(errMsg);
        }
    </script>
</head>
<body>
    <form id="form1" runat="server" enableviewstate="false">
    <div id="host">
        <object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">
		<asp:Literal ID="source" runat="server" />
		<param name="onError" value="onSilverlightError" />
		<param name="background" value="white" />
		<param name="minRuntimeVersion" value="3.0.40624.0" />
		<param name="autoUpgrade" value="true" />
		  <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40624.0" style="text-decoration:none">
 			  <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="Get Microsoft Silverlight" style="border-style:none"/>
		  </a>
	    </object><iframe id="_sl_historyFrame" style="visibility:hidden;height:0px;width:0px;border:0px"></iframe></div>
    </form>    
</body>
</html>

Re: Update silverlight xap file - Sample code

Nasenbaaer2-Jun-10 5:06

Nasenbaaer

2-Jun-10 5:06

Hi.

A nice idea. But it did not work for me. I use the divelement tools where I can display HTML content. And the content of this divelement controls stopps working by using your methode and does a refresh of the whole page.

Re: Update silverlight xap file

Mark Salsbery1-Sep-09 5:28

Mark Salsbery

1-Sep-09 5:28

I don't know if zlezj's solution is necessary, but...

During development I've noticed sometimes the browser will use a cached xap
instead of my freshly changed xap, so I just got in the habit of clearing the browser
cache every time I test.

Also make sure your newer xap files are actually overwriting old ones when you
publish.

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

WPF CheckBox state

Gary Wheeler31-Aug-09 9:47

Gary Wheeler

31-Aug-09 9:47

Is there a simple way to set the IsChecked state of a CheckBox without invoking any Checked event handlers? I want to set the initial state of a checkbox without invoking the Checked handler unnecessarily.

I know it's as simple as having a flag that the event handler looks at, or unhooking the event handler while I'm initializing the check box state, but that just seems clumsy.

Software Zen: delete this;

Re: WPF CheckBox state [modified]

Super Lloyd31-Aug-09 14:43

Super Lloyd

31-Aug-09 14:43

How about:
<CheckBox Content="I'm Checked!" IsChecked="True"/>

or, in code:
theCheckbox.IsChecked = true;

Now, I'm a bit puzzle by what you mean "in the event handler"
You don't set it in the event handler (that would be pointless and against the normal behavior of a checkbox), you get the new value!

A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
_________________________________________________________
My programs never have bugs, they just develop random features.

modified on Monday, August 31, 2009 9:00 PM

Re: WPF CheckBox state

Gary Wheeler1-Sep-09 0:55

Gary Wheeler

1-Sep-09 0:55

Super Lloyd wrote:
<CheckBox Content="I'm Checked!" IsChecked="True"/>

I can't set the initial state of the checkbox in the XAML, since the initial state is determined programmatically during the Loaded() event handler for the dialog.

Super Lloyd wrote:
Now, I'm a bit puzzle by what you mean "in the event handler"

I'm referring to something like this, where a flag tells the CheckBox Checked() handler whether or not to do its thing:

bool _SettingInitialState = true;
//...
_SettingInitialState = true;
_Checkbox.IsChecked = initial_state;
_SettingInitialState = false;
//...
private void _CheckedHandler(...)
{
  if (!_SettingInitialState)
  {
     // normal Checked() handling
  }
}

Software Zen: delete this;

Re: WPF CheckBox state

Super Lloyd1-Sep-09 0:58

Super Lloyd

1-Sep-09 0:58

why don't you set it in the Loaded event handler then, if it's when it is decided?

Re: WPF CheckBox state

Gary Wheeler1-Sep-09 1:11

Gary Wheeler

1-Sep-09 1:11

That's where I want to set it. I'd just like the act of setting the initial state to not trigger the Checked handler when I do so.

Software Zen: delete this;

Re: WPF CheckBox state

Super Lloyd1-Sep-09 1:27

Super Lloyd

1-Sep-09 1:27

Mmm, strange, why is it you can't decide of the checked state before, maybe you are not doing something the elegant way perhaps?

Anyway, to suggest an other unelegant workaround, why don't you register the event handler by code in the Loaded event handler (after setting the value), instead of registering it in XAML?

Re: WPF CheckBox state

Gary Wheeler1-Sep-09 1:35

Gary Wheeler

1-Sep-09 1:35

Super Lloyd wrote:
Mmm, strange, why is it you can't decide of the checked state before, maybe you are not doing something the elegant way perhaps?

Setting the state depends upon communications with an external process, which may take a significant amount of time. Until that communication completes, I don't know the state.

I may simply connect the event handler when the communication completes, instead of in the Loaded() handler.

Thanks for the suggestions Rose | [Rose]

Software Zen: delete this;

Dynamic enumlist

ProgrammerWPF31-Aug-09 8:43

ProgrammerWPF

31-Aug-09 8:43

Hi I have an enum set say tiger=0,
lion=1,
deer=2,
snake=4
These enums are to be displayed in a list box which is dependent on a combo box. The combo box will have values like carnivores,herbivores,repltiles.
So when I change my selectedindex the value in the list box(ie the animal names) should also change. So if I have carnivores, I get lion and tiger. If i have reptiles , I have snake.
Please suggest the respective xaml and the necessary code required. Its very urgent.
Thanks

Re: Dynamic enumlist

Not Active31-Aug-09 9:54

Not Active

31-Aug-09 9:54

So how do you tell from the enum whether the animal is a carnivore? You can't, so you have to..."Its very urgent.". Of course it's urgent to you, but not to everyone else here who volunteer their time. Don't be rude.

only two letters away from being an asset

Re: Dynamic enumlist

ProgrammerWPF31-Aug-09 9:57

ProgrammerWPF

31-Aug-09 9:57

Am not being rude... Smile | :)

neways.. lion = animal.carnivore
snake = animal.reptile
and so on..
hope this helps... Smile | :)

Re: Dynamic enumlist

Not Active31-Aug-09 10:10

Not Active

31-Aug-09 10:10

To be clear, when you ask for an urgent response here you are being rude. Everyone here volunteers their time and to ask for an urgent response you are failing to recognize this, and thus being rude and inconsiderate. We don't have to answer your question immediately, or at all, do demand it.

You have your answer already if you think about it. Based on the selection from one dropdown you need to populate a second. How would you do this? How do you populate the first dropdown?

only two letters away from being an asset

Re: Dynamic enumlist

ProgrammerWPF31-Aug-09 10:19

ProgrammerWPF

31-Aug-09 10:19

Ok ok... am sorrry... not familiar with the "Posting" standards.

I got ur point, but the problem is with the enums.... if it was a normal list, it was simple... but the enums are creating a problem..
Please do help

Re: Dynamic enumlist

Not Active31-Aug-09 10:44

Not Active

31-Aug-09 10:44

ProgrammerWPF wrote:
if it was a normal list, it was simple

An enum can be treated like a "normal" list, Enum.GetNames[^] returns an array of the enum names. Enum.GetValues[^] returns an array values. You can either use one of these methods or create a collection that combines them into name/value pairs and bind your dropdown to it.

only two letters away from being an asset

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