# Friday, 25 February 2011

Visual Studio 2010 or Visual Web Developer Express 2010 or Visual Phone Developer Express 2010 that matches the language version of Silverlight Tools 4 must be installed before installation of Silverlight Tools can continue.

I was running into the above error when I tried to install Silverlight 4 Tools for Visual Studio 2010 whether I did it from the downloaded install or via the Web Platform Installer.

Downloaded Silverlight4_Tools.exe error message:

image 

WPI:

image

If you open the first log file you will find the error at the bottom:

Installation Blockers:
    1) Visual Studio 2010 or Visual Web Developer Express 2010 or Visual Phone Developer Express 2010 that matches the language version of Silverlight Tools 4 must be installed before installation of Silverlight Tools can continue.  Silverlight Tools is available in other languages at <A HREF="http://go.microsoft.com/fwlink/?LinkId=177432">http://go.microsoft.com/fwlink/?LinkId=177432</A>.

When I looked online for this error I was only seeing references to the Beta and Release Candidates of Visual Studio 2010.

After a little thought, I decided to open up the readme file for the SP1 Beta of Visual Studio 2010 that I installed a while back and there was the answer:

2.1.4. Error when you try to install Silverlight 4 Tools for Visual Studio 2010 on Visual Studio 2010 SP1 Beta

An error message may appear when you try to install Silverlight 4 Tools for Visual Studio 2010 on Visual Studio 2010 SP1 Beta. 

To resolve this issue:

Because Silverlight 4 Tools for Visual Studio 2010 (http://www.microsoft.com/downloads/en/details.aspx?FamilyID=b3deb194-ca86-4fb6-a716-b67c2604a139&displayLang=en) is included in Visual Studio 2010 SP1 Beta, you do not have to install Silverlight 4 tools separately.  Also, you do not have to uninstall Silverlight 4 Tools for Visual Studio 2010 before you install Visual Studio SP1 Beta.

There you have it.  If you installed VS 2010 SP1 Beta then you already have the Silverlight 4 Tools.  How’s that for a descriptive error message. :-)

Happy Coding!

Posted 02.25.2011  #    Comments [6]  | 
# Monday, 17 January 2011

One can never know as much as a team knows. Learning from others is a wonderful team and individual trait.

Background

About a year ago our team was working on an intranet project. As the lead developer and I discussed the features needed, we decided to handle some tasks on the front end with jQuery. Neither one of us had much experience with jQuery and we had a tight deadline to meet. 

The Bad & The Ugly

Since we were really under the gun we split up the work and I tackled the client side jQuery. Warning – Avert eyes now if you wish not to see be subjected to ugly code!

var Editor1 = '#Editor1';
var Editor1CountLimit = 5000
var Editor1InfoArea = '#Info';

var WhyThisStratArea = '#txtVchWhyThisStrategicArea';
var WhyThisStratAreaCountLimit = 500;
var WhyThisStratAreaInfoArea = '#txtVchWhyThisStrategicAreaInfo';

var ProgramDescriptionArea = '#txtVchProgramDescription';
var ProgramDescriptionAreaCountLimit = 1000;
var ProgramDescriptionAreaInfoArea = '#txtVchProgramDescriptionInfo';

var Activity = '#txtVchActivity';
var ActivityCountLimit = 3000;
var ActivityInfoArea = '#txtVchActivityInfo';

var OtherInfo = '#txtVchOtherInfo';
var OtherInfoCountLimit = 1000;
var OtherInfoArea = '#txtVchOtherInfoInfo';

var OutcomeMandated = '#txtvchOutcomeMandated';
var OutcomeMandatedCountLimit = 1000;
var OutcomeMandatedArea = '#txtvchOutcomeMandatedInfo';

var ServiceLevelMandated = '#txtVchServiceLevelMandated';
var ServiceLevelMandatedCountLimit = 1000;
var ServiceLevelMandatedArea = '#txtVchServiceLevelMandatedInfo';

var ChangeInLevelofService = '#txtvchChangeInLevelofService';
var ChangeInLevelofServiceCountLimit = 1000;
var ChangeInLevelofServiceArea = '#txtvchChangeInLevelofServiceInfo';


$(document).ready(function() {

    ChangeTextOnKeyUp(Editor1, Editor1CountLimit, Editor1InfoArea);

    //change the length when typed in.
    TrackKeyStrokesForTextArea(WhyThisStratArea, WhyThisStratAreaCountLimit, WhyThisStratAreaInfoArea);
    TrackKeyStrokesForTextArea(ProgramDescriptionArea, ProgramDescriptionAreaCountLimit, ProgramDescriptionAreaInfoArea);
    TrackKeyStrokesForTextArea(Activity, ActivityCountLimit, ActivityInfoArea);
    TrackKeyStrokesForTextArea(OtherInfo, OtherInfoCountLimit, OtherInfoArea);
    TrackKeyStrokesForTextArea(OutcomeMandated, OutcomeMandatedCountLimit, OutcomeMandatedArea);
    TrackKeyStrokesForTextArea(ServiceLevelMandated, ServiceLevelMandatedCountLimit, ServiceLevelMandatedArea);
    TrackKeyStrokesForTextArea(ChangeInLevelofService, ChangeInLevelofServiceCountLimit, ChangeInLevelofServiceArea);

    //setup the initial value for a text area...
    $(WhyThisStratAreaInfoArea).html($(WhyThisStratArea).val().length + ' Characters Used');
    $(ProgramDescriptionAreaInfoArea).html($(ProgramDescriptionArea).val().length + ' Characters Used');
    $(ActivityInfoArea).html($(Activity).val().length + ' Characters Used');
    $(OtherInfoArea).html($(OtherInfo).val().length + ' Characters Used');
    $(OutcomeMandatedArea).html($(OutcomeMandated).val().length + ' Characters Used');
    $(ServiceLevelMandatedArea).html($(ServiceLevelMandated).val().length + ' Characters Used');
    $(ChangeInLevelofServiceArea).html($(ChangeInLevelofService).val().length + ' Characters Used');
});

function ChangeTextOnKeyUp(ctl, limit, info) {

    var editor = $(ctl).contents().find('iframe').eq(1);

    $(editor).load(function() {

        //initial load, set value....
        var txt = $(this).contents().find('body').text();
        $(info).html(txt.length + ' Characters Used');

        //watch cut and paste
        $(this).contents().find('body').bind('cut paste', function(e) {
            var el = $(this);
            setTimeout(function() {
                //use a delay to wait for the text to update....
                var txt = $(el).text();
                if (txt.length > limit) {
                    $(info).html(txt.length + ' Characters Used').css("color", "red");
                }
                else {
                    $(info).html(txt.length + ' Characters Used').css("color", "");
                }
            }, 150);
        });

        //watch key up
        $(this).contents().keyup(function() {

            var txt = $(this).contents().find('body').text();

            if (txt.length > limit) {
                $(info).html(txt.length + ' Characters Used').css("color", "red");
            }
            else {
                $(info).html(txt.length + ' Characters Used').css("color", "");
            }
        });

    });

}

function TrackKeyStrokesForTextArea(ctl, limit, info) {
    $(ctl).keyup(function() {
        var txt = $(ctl).val();
        if (txt.length > limit)
            $(info).html(txt.length + ' Characters Used').css("color", "red");
        else
            $(info).html(txt.length + ' Characters Used').css("color", "");
    });

    $(ctl).bind('cut paste', function(e) {
        var el = $(this);
        setTimeout(function() {

            var txt = $(el).val();
            if (txt.length > limit) {
                $(info).html(txt.length + ' Characters Used').css("color", "red");
            }
            else {
                $(info).html(txt.length + ' Characters Used').css("color", "");
            }
        }, 150);
    });
}

function ValidateEditor1Length(source, args) {
    var editor = $(Editor1).contents().find('iframe').eq(1);
    var txt = editor.contents().find('body').text();
    var isValid = txt.length > 0 && txt.length <= Editor1CountLimit;
    args.IsValid = isValid;
}

function ValidateWhyThisStratAreaLength(source, args) {
    var txt = $(WhyThisStratArea).val();
    var isValid = txt.length > 0 && txt.length <= WhyThisStratAreaCountLimit;
    args.IsValid = isValid;
    /*if (!isValid)
        Spellcheck();*/
        
}

function ValidateProgramDescriptionLength(source, args) {
    var txt = $(ProgramDescriptionArea).val();
    var isValid = txt.length > 0 && txt.length <= ProgramDescriptionAreaCountLimit;
    args.IsValid = isValid;
}

function ValidateActivityLength(source, args) {
    var txt = $(Activity).val();
    var isValid = txt.length > 0 && txt.length <= ActivityCountLimit;
    args.IsValid = isValid;
}
function ValidateOtherInfoLength(source, args) {
    var txt = $(OtherInfo).val();
    var isValid = txt.length > 0 && txt.length <= OtherInfoCountLimit;
    args.IsValid = isValid;
}
function ValidateOutcomeMandatedLength(source, args) {
    var txt = $(OutcomeMandated).val();
    var isValid = txt.length > 0 && txt.length <= OutcomeMandatedCountLimit;
    args.IsValid = isValid;
}
function ValidateServiceLevelMandatedLength(source, args) {
    var txt = $(ServiceLevelMandated).val();
    var isValid = txt.length > 0 && txt.length <= ServiceLevelMandatedCountLimit;
    args.IsValid = isValid;
}
function ValidateChangeInLevelofServiceLength(source, args) {
    var txt = $(ChangeInLevelofService).val();
    var isValid = txt.length > 0 && txt.length <= ChangeInLevelofServiceCountLimit;
    args.IsValid = isValid;
}

Ugly!  Oh ya, we’ve all seen it and we’ve all most assuredly done it at least once. :-)

TheBadAndUgly

So what is all this code doing? Basically only three things. It’s setting and tracking the max length allowed in a text area, updating the number of characters typed and showing a message/validating when an entry goes over it’s maximum length.

Why do all this when we can do this with validator controls? We wanted the UI to be more responsive and interactive for the users. We wanted the number of characters along with a warning to the user when they go over the limit before they try to save their work.

Now, I could give every excuse for this horrible looking code. We’ve all been here before.  Not enough time to do it right but we have to get it out the door none-the-less.  I knew the code was bad and could be improved upon.  Still, the code is ugly.

The Good

We had a new team member join our team about four months ago and we happened to be working on this project again.  His jQuery skills brought to bear on this project was just what we needed.

To fix MY monstrosity he created hidden fields tied to the text areas and got rid of the setup variables.  It may sound like we’re swapping one mess for another but it helped greatly in reducing the code needed as well as improved the readability and flow.

<asp:TextBox ID="txtWhyThisStrategicArea" cssClass="spellcheck" runat="server" TextMode="MultiLine"></asp:TextBox>
<input runat="server" type="hidden"  id="txtWhyThisStrategicAreaMaxLength" value="500" />
<input runat="server" type="hidden"  id="txtWhyThisStrategicAreaRequired" value="true" />
// Text field character counter
$('#txtProgramName, #txtWhyThisStrategicArea, #txtContactPerson).each(function () {

    var length = $(this).val().length;
    var limit = $('#' + $(this).attr('id') + 'MaxLength').val();
    var maxInfoArea = $('#' + $(this).attr('id') + 'MaxArea');
    var displayText = ' of ' + limit + '  Characters Used.';

    //set up the initial display
    if (length > limit)
        $(maxInfoArea).html(length + displayText).addClass("warning");
    else
        $(maxInfoArea).html(length + displayText).removeClass("warning");

    //hook the keyup
    $(this).keyup(function () {
        var length = $(this).val().length
        if (length > limit)
            $(maxInfoArea).html(length + displayText).addClass("warning");
        else
            $(maxInfoArea).html(length + displayText).removeClass("warning");
    });

});

169 lines of code down to 24.  Deleting code, it’s a beautiful thing!

Knowledge, Learning and Sharing – Our Biggest Asset. 

Knowledge and learning are perhaps our biggest asset but are we open to receiving it and sharing it?

I am convinced our attitude in this arena is a huge factor of our success. We never think it’s a bad thing to go get lessons from someone better than us for other activities like learning an instrument.  Why wouldn’t we think the same way in our profession. Do we believe it will make us look weak or expose us in such a way that would jeopardize our job? It’s more dangerous to think this way than it is to actively engage with those better than ourselves to improve.

Stock Photo

Learning from others should be embraced by all.  When we close off our mind to being teachable we will suffer and so will the team.  Contributions from all team members is valuable.  Everyone from the Janitor to the CEO can provide valuable insight.  The more an individual and team thinks and acts like this the more likely they are to grow stronger mentally, improve their technical and social skills, and ultimately help produce better solutions for everyone. 

Happy Coding!

Posted 01.17.2011  #    Comments [2]  | 
# Thursday, 11 November 2010

This weekend I was trying to install the WebMatrix and it was hanging on the SQL CLR types install.  I’ve had a couple of times now when the Web Platform Installer doesn’t quite work and I don’t get any error.

I tried a couple of things like shutting down SQL Server, restarting WebPI, etc.  I found the easiest way around this is to use WebPI’s installation information window to see what the prerequisites are and run them manually.

WPI3InstallWindow

WebPI downloads the install files to C:\Documents and Settings\[USERNAME]\Local Settings\Application Data\Microsoft\Web Platform Installer\installers.

WebPIInstallFolder

Manually installing the prerequisites worked even though WebPI hung on the SQLCLRTypes install. 

It’s nice to know where WebPI downloads the install files in case you want to backup the files or install on another box without having to re-download them.  You could copy the installers directory to/from machines to avoid this.

The Web Platform Installer is a great little tool that has made life a lot easier but it’s not perfect.  Hopefully this little trick will help someone else out when WebPI doesn’t quite do the trick on it’s own.

Happy Coding!

Posted 11.11.2010  #    Comments [6]  |