.NET (Core and Framework)

[VB.NET 2008] DataSet and XML files

13-Dec-12 4:37

thank you for the reply, i had to delete all the data in both tables to get it to work

steve_949661313-Dec-12 0:06

steve_9496613

13-Dec-12 0:06

Hi,
in my application (running in Windows CE) I use a XML file to store some configuration data that, at runtime, I load in a DataSet.
To read and to store these data I use the following code:

Private Shared Function SetCfgData() As Boolean

   Try
     Dim fs As New FileStream(CGlobali.CfgDataFileComplName, FileMode.Open)
     Dim xr As XmlReader = System.Xml.XmlReader.Create(fs)

     'CGlobali.CfgData is a DataSet
     CGlobali.CfgData.Clear()
     CGlobali.CfgData.ReadXml(xr)

     xr.Close()
     fs.Close()

   Catch ex As System.IO.FileNotFoundException
     MessageBox.Show("File " & CGlobali.CfgDataFileComplName & " not found.")
     Return False
   Catch ex As XmlException
     MessageBox.Show("XmlException occured: " & ex.ToString)
     Return False
   End Try

   Return True

When the user modifies these data, they are automatically updated in the DataSet and saved in the file, at least that's what I would do...

To save the data from the DataSet to the file I do this:

Private Shared Function UpdateCgfFile() As Boolean

  Try
    Dim StreamEncoding As Encoding
    StreamEncoding = Encoding.Unicode
    Dim cfgfile As New System.IO.StreamWriter(CGlobali.CfgDataFileComplName, True, StreamEncoding)

    CGlobali.CfgData.WriteXml(cfgfile)

    cfgfile.Close()

    Return True
  Catch ex As Exception
    Return False
  End Try
End Function

What I would get with the above code is to update existing fields in the xml file with the new values, but what I get is that the same fields are added to the existing ones.

This is the "original" file:

XML

<?xml version="1.0" encoding="UTF-16"?>
<Sezioni>
  <PLC>
    <IP>10.0.0.85</IP>
    <Port>502</Port>
    <Description></Description>
    <PauComm>15000</PauComm>
    <ConTOut>5000</ConTOut>
    <RxTOut>5000</RxTOut>
  </PLC>
</Sezioni>

and this is the file after a save:

XML

<?xml version="1.0" encoding="UTF-16"?>
<Sezioni>
  <PLC>
    <IP>10.0.0.85</IP>
    <Port>502</Port>
    <Description></Description>
    <PauComm>15000</PauComm>
    <ConTOut>5000</ConTOut>
    <RxTOut>5000</RxTOut>
  </PLC>
</Sezioni>
<Sezioni>
  <PLC>
    <IP>192.168.1.10</IP>
    <Port>502</Port>
    <Description />
    <PauComm>15000</PauComm>
    <ConTOut>5000</ConTOut>
    <RxTOut>5000</RxTOut>
  </PLC>
</Sezioni>

Obviously this is not the result I want to achieve, I do not want to duplicate fields, I want to update the existing ones.

Can someone tell me what I'm doing wrong?

Thanks in advance.

Re: [VB.NET 2008] DataSet and XML files

Eddy Vluggen13-Dec-12 4:28

Eddy Vluggen

13-Dec-12 4:28

steve_9496613 wrote:
Can someone tell me what I'm doing wrong?

Dim cfgfile As New System.IO.StreamWriter(CGlobali.CfgDataFileComplName, True, StreamEncoding)

What does the second parameter in the StreamWriter do?

MSDN[^] states:
true to append data to the file; false to overwrite the file. If the specified file does not exist, this parameter has no effect, and the constructor creates a new file.

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]
They hate us for our freedom![^]

Re: [VB.NET 2008] DataSet and XML files

steve_949661313-Dec-12 21:21

steve_9496613

13-Dec-12 21:21

...ops...

...next time I'll be more careful...

Thanks Eddy

Re: [VB.NET 2008] DataSet and XML files

Eddy Vluggen14-Dec-12 0:34

Eddy Vluggen

14-Dec-12 0:34

You're welcome Smile | :)

Assembly with different .NET framework versions

marca29212-Dec-12 10:05

marca292

12-Dec-12 10:05

I have a assembly A that must use .NET framework 3.5. This assembly has a referense to a 3rd party assembly that has been developed with .net framework 4.0. The problem is that I can't build because the 3rd party uses FW 4.0. Is it possible to solve this?

Re: Assembly with different .NET framework versions

Gerry Schmitz12-Dec-12 12:25

Gerry Schmitz

12-Dec-12 12:25

Create a (console) "server" app in 4.0 that references the 3rd party assembly.

Create a connection using "Named Pipes" from your 3.5 app (as "client") to the "server".

Start the server and the client, and acccess the 4.0 assembly by the client thru the server.

(Or: use message queues; a web service (on the same machine); etc.)

Use A Cookie To Send PersonID To Different Page

xnaLearner12-Dec-12 4:33

dont allow user to select existing date

12-Dec-12 4:33

Hey guys so atm when the user goes to the holiday page, they can do 1 of 2 things

1)use a drop down box to select 'person name' and click 'view' this will display all the current holidays for this person

2)click 'create new' which will bring the user to a create page which allows them to add a new holiday(from here they select person name from drop and and select what date from calender)

This all works, however if the user originally follows the first path of selecting a person name and clicking view(it will display their holidays) if they then take the path of 2 and click 'create' it will jump to the create page. however the drop down box will be back at 'select' i would like the existing person selected from the previous drop down to display in this drop down.

A cookie or url/parameter?

anyway Im stuck please help

I've tried a cookie.

[code]
[HttpGet]
        public ViewResult Index(string sortOrder, int? currentPersonID)
        {
            var holidays = db.Holidays.Include("Person");
            HolidayList model = new HolidayList();

            if (currentPersonID.HasValue)
            {
                model.currentPersonID = currentPersonID.Value;

            }
            else
            {
                model.currentPersonID = 0;
            }

            model.PList4DD = db.People.ToList();

            //hyperlink to sort dates in ascending order
            ViewBag.NameSortParm = String.IsNullOrEmpty(sortOrder) ? "date" : "";
            var dates = from d in db.Holidays
                        where d.PersonId == currentPersonID.Value    
                        select d;

            switch (sortOrder)
            {
                case "date":
                    dates = dates.OrderBy(p => p.HolidayDate);
                    break;
            }

            model.HList4DD = dates.ToList();

            var cookie = new HttpCookie("cookie_name", "currentPersonID");
            Response.AppendCookie(cookie);     

            return View(model);
        }

    public ActionResult Create()
        {
            var cookie = Request.Cookies["cookie_name"];
            if (cookie != null)
            {
                string value = cookie.Value;
                //int? value = cookie.Value;
            }

            ViewBag.cookie = cookie.Value;

            ViewBag.Id = new SelectList(db.People, "Id", "Name");
            return View();

//tried to use the currentPersonID in index as an int but it woudlnt allow me.

HTML

[/code]
My View
[code]
@model HolidayBookingApp.Models.startANDend


@{
    ViewBag.Title = "Create";
}

<p>


  <span>@ViewBag.cookie</span>


<h2>Create</h2>

<form action ="ListHolidays" id="listHolidays" method="post">
@using (Html.BeginForm()) {
      @Html.ValidationSummary(true)
    <fieldset>
        <legend>Holiday</legend>

        <div>
            @Html.LabelFor(model => model.PersonId, "Person")
        </div>

        <div>     
            @Html.DropDownListFor(model => model.PersonId,
                                new SelectList(ViewBag.Id, "Value", "Text"),
                                "---Select---"
                                )   
         @Html.ValidationMessageFor(model => model.PersonId)            
        </div>

        <div>
            @Html.LabelFor(model => model.HolidayDate)
        </div>

        <div>

            @Html.TextBoxFor(model => model.HolidayDate)

            @Html.TextBoxFor(model => model.endDate)
    <script>

//        Date.format = 'dd/m/yyy';
        $("#HolidayDate").addClass('date-pick');
        $("#endDate").addClass('date-pick');
            //$('.date-pick').datePicker//({dateFormat: 'dd-mm-yy'}).val();

//        clickInput: true

        $(function () {
            //3 methods below dont allow user to select weekends
            $('.date-pick').datePicker(
               {
                   createButton: false,
                   renderCallback: function ($td, thisDate, month, year) {
                       if (thisDate.isWeekend()) {
                           $td.addClass('weekend');
                           $td.addClass('disabled');
                       }

                   }
               }
        )

        .bind('click',
            function () {
                $(this).dpDisplay();
                this.blur();
                return false;
            }
        )

        .bind('dateSelected',
            function (e, selectedDate, $td) {
                console.log('You selected ' + selectedDate);
            }
        );

            //        HolidayDate is start date
            $('#HolidayDate').bind('dpClosed',
                    function (e, selectedDates) {
                        var d = selectedDates[0];
                        if (d) {
                            d = new Date(d);
                            $('#endDate').dpSetStartDate(d.addDays(0).asString());
                        }
                    }
            );

            //end date is end date
            $('#endDate').bind('dpClosed',
                    function (e, selectedDates) {
                        var d = selectedDates[0];
                        if (d) {
                            d = new Date(d);
                            $('#HolidayDate').dpSetEndDate(d.addDays(0).asString());
                        }
                    }
                );
        });



    </script>

     @Html.ValidationMessageFor(model => model.HolidayDate)
        </div>

        <p>
            <input type="submit" value="Create"/>
        </p>



    </fieldset>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@*
<p>Current Person Selected is:

@TempData["currentPersonID"]

</p>*@
[code]

Once I get this going how can i get my drop down to store the value? Any help?

Thanks

xnaLearner10-Dec-12 5:46

10-Dec-12 5:46

So the user selects holidays (start and end dates) from two calendars, the dates from start to end are then stored in the DB in separate records per date.

(thanks to help from a previous question this all works fine)

Now, I want some sort of error message which doesnt allow the button to be clicked if the dates the user are selecting already exist in the DB.

Im unsure if this is done from the view, or controller?

View:

HTML

<form action ="ListHolidays" id="listHolidays" method="post">
@using (Html.BeginForm()) {
      @Html.ValidationSummary(true)
    <fieldset>
        <legend>Holiday</legend>

        <div>
            @Html.LabelFor(model => model.PersonId, "Person")
        </div>

        <div>     
            @Html.DropDownListFor(model => model.PersonId,
                                new SelectList(ViewBag.Id, "Value", "Text"),
                                "---Select---"
                                )   
         @Html.ValidationMessageFor(model => model.PersonId)            
        </div>

        <div>
            @Html.LabelFor(model => model.HolidayDate)
        </div>

        <div>

            @Html.TextBoxFor(model => model.HolidayDate)

            @Html.TextBoxFor(model => model.endDate)
    <script>

//        Date.format = 'dd/m/yyy';
        $("#HolidayDate").addClass('date-pick');
        $("#endDate").addClass('date-pick');
            //$('.date-pick').datePicker//({dateFormat: 'dd-mm-yy'}).val();

//        clickInput: true

        $(function () {
        //3 methods below dont allow user to select weekends
            $('.date-pick').datePicker(
               {
                   createButton: false,
                   renderCallback: function ($td, thisDate, month, year) 
                   {
                       if (thisDate.isWeekend()) 
                       {
                           $td.addClass('weekend');
                           $td.addClass('disabled');
                       }
                   }
               }
        )

        .bind('click',
            function () 
            {
                $(this).dpDisplay();
                this.blur();
                return false;
            }
        )

        .bind('dateSelected',
            function (e, selectedDate, $td) 
            {
                console.log('You selected ' + selectedDate);
            }
        );

//        HolidayDate is start date
            $('#HolidayDate').bind('dpClosed',
                    function (e, selectedDates) 
                    {
                        var d = selectedDates[0];
                        if (d) 
                        {
                            d = new Date(d);
                            $('#endDate').dpSetStartDate(d.addDays(1).asString());
                        }
                    }
            );

            //end date is end date
            $('#endDate').bind('dpClosed',
                    function (e, selectedDates) 
                    {
                        var d = selectedDates[0];
                        if (d) 
                        {
                            d = new Date(d);
                            $('#HolidayDate').dpSetEndDate(d.addDays(-1).asString());
                        }
                    }
                );
        });



    </script>

     @Html.ValidationMessageFor(model => model.HolidayDate)
        </div>

        <p>
            <input type="submit" value="Create"/>
        </p>

controller:

HttpPost] public ActionResult listHolidays(Holiday holiday, int? PersonId, string HolidayDate, string endDate) {

            DateTime startDates = Convert.ToDateTime(HolidayDate),
                     endDates = Convert.ToDateTime(endDate);

            while (startDates <= endDates)
            {
                if (startDates.DayOfWeek != DayOfWeek.Saturday && startDates.DayOfWeek != DayOfWeek.Sunday)
                {
                    Holiday holiday1 = new Holiday();
                    holiday1.PersonId = PersonId.Value;
                    holiday1.HolidayDate = startDates;

                    db.Holidays.AddObject(holiday1);
                    db.SaveChanges();



                    //say start date is 10. AddDays(1) will make it 11 then return it to startDates in 'startDates' = startdates,
                    //but doesnt chage the value of startdates = 'startdates'
                }

                startDates = startDates.AddDays(1);
            }

            return RedirectToAction("Index");

so...? if holidayDate = db.exisitng date?

Unsure how to go about this.

Please advise.

thanks

Pete O'Hanlon10-Dec-12 5:53

10-Dec-12 5:53

I'd be tempted to use this logic:

JavaScript

$(function () {
//3 methods below dont allow user to select weekends
    $('.date-pick').datePicker(
       {
           createButton: false,
           renderCallback: function ($td, thisDate, month, year)
           {
               if (thisDate.isWeekend())
               {
                   $td.addClass('weekend');
                   $td.addClass('disabled');
               }
               if (thisDate.isHoliday()) // You need to code the method that supports this.
               {
                   $td.addClass('holiday');
                   $td.addClass('disabled');
               }
           }
       }
)

Where you do the check for thisDate.isWeekend, add in a check to see if the date has previously been selected as well. That way you give the user a good UI experience because you can show that a date has previously been selected. Now, you will also need to add a check in to the controller to prevent the user from adding a date that's previously been selected because you are working in a multi-user system here.

*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

xnaLearner10-Dec-12 6:23

10-Dec-12 6:23

Ahh yes i see...the holiday method was a ice feature as well...I get what your saying Pete, but unfortunately I don't know how to hard code a check for the UI that will show what dates are already chosen, how can i pull the dates across?

Also regarding putting a check in the controller could you give any advice on this? I know what I am meant to do but don't know the syntax

datetime startDate

if statedate = db.holidayDate
MessageBox("error")
disable 'select'btn

xnaLearner10-Dec-12 23:26

10-Dec-12 23:26

Hi Pete,
Im trying to give the UI experience of date if it has been previously accepted.

In My JS file:

HTML

/**
* An Array of day names starting with Sunday.
*/
Date.dayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];

/**
* An Array of abbreviated day names starting with Sun.
*/
Date.abbrDayNames = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];

/**
* An Array of month names starting with Janurary.
*/
Date.monthNames = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];

/**
* An Array of abbreviated month names starting with Jan.
*/
Date.abbrMonthNames = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];

/**
* The first day of the week for this locale.
*/
Date.firstDayOfWeek = 1;

/**
* The format that string dates should be represented as (e.g. 'dd/mm/yyyy' for UK, 'mm/dd/yyyy' for US, 'yyyy-mm-dd' for Unicode etc).
*/
Date.format = 'dd/mm/yyyy';

/**
* The first two numbers in the century to be used when decoding a two digit year. Since a two digit year is ambiguous (and date.setYear
* only works with numbers < 99 and so doesn't allow you to set years after 2000) we need to use this to disambiguate the two digit year codes.
*/
Date.fullYearStart = '20';

(function () {
    function add(name, method) {
        if (!Date.prototype[name]) {
            Date.prototype[name] = method;
        }
    };

    /**
    * Checks if the year is a leap year.
    */
    add("isLeapYear", function () {
        var y = this.getFullYear();
        return (y % 4 == 0 && y % 100 != 0) || y % 400 == 0;
    });

    /**
    * Checks if the day is a weekend day (Sat or Sun).
    */
    add("isWeekend", function () {
        return this.getDay() == 0 || this.getDay() == 6;
    });

I'm tryihg to add a check into 'isWeekend' to include dates that already exist but don't know how.

Can you Advise?

Thanks

Pete O'Hanlon10-Dec-12 23:32

10-Dec-12 23:32

Hmm - I would do this differently. In order to get the dates that had already been selected, I would call back to the server to retrieve those dates and use that to blank out those dates in the UI.

*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

xnaLearner10-Dec-12 23:46

10-Dec-12 23:46

Im using the kelvin luck J query datePicker....

Is this any help?

http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerDefaultToday.html[^]

It already selects todays date, maybe I could edit this somway to include dates that exist in the DB...just not sure of the syntax, ay help?
thanks

Pete O'Hanlon10-Dec-12 23:51

10-Dec-12 23:51

Maybe, for simplicities sake, you should just stick to informing the user that the date they picked is invalid. You seem very new to this, and adding complexity like this could well be beyond you right now - unfortunately, I don't have the time to write a fully working sample for you to demonstrate how this all hangs together.

*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

xnaLearner11-Dec-12 0:21

11-Dec-12 0:21

No problem pete, yeah i'm a beginner at this stuff. Will just have to keep at it.

Thanks for the help though

Pete O'Hanlon11-Dec-12 1:02

Run through loop for week and dont select weekends

11-Dec-12 1:02

No problem. Sorry I couldn't be more help here.

*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

xnaLearner10-Dec-12 4:13

Re: Run through loop for week and dont select weekends

10-Dec-12 4:13

SQL

So the user can select 2 different dates, a start date and an end date from 2 calendars, when they click 'add' the dates between&including the dates selected will be added to the DB, each date as a separate record.

This works fine however I dont want weekends to be added to the DB.

Iv updated the UI of datepicker http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerCustomCellRender.html but if a user selects fri-mon for example fri,sat,sun and mon will be added to the db Iv tried to only run the code if datyofweek is not saturday or sunday

public ActionResult listHolidays(Holiday holiday, int? PersonId, string HolidayDate, string endDate)
       {
           DateTime startDates = Convert.ToDateTime(HolidayDate),
                    endDates = Convert.ToDateTime(endDate);

           while (startDates <= endDates)
           {
               if (startDates.DayOfWeek != DayOfWeek.Saturday || startDates.DayOfWeek != DayOfWeek.Sunday)
               {
                   Holiday holiday1 = new Holiday();
                   holiday1.PersonId = PersonId.Value;
                   holiday1.HolidayDate = startDates;

                   db.Holidays.AddObject(holiday1);
                   db.SaveChanges();

                   //say start date is 10. AddDays(1) will make it 11 then return it to startDates in 'startDates' = startdates,
                   //but doesnt chage the value of startdates = 'startdates'
                  // startDates = startDates.AddDays(1);

                    startDates = startDates.AddDays(1);
               }
           }

           return RedirectToAction("Index");
       }

any help?
Thanks

Pete O'Hanlon10-Dec-12 4:31

Re: Run through loop for week and dont select weekends

10-Dec-12 4:31

xnaLearner wrote:
if (startDates.DayOfWeek != DayOfWeek.Saturday || startDates.DayOfWeek != DayOfWeek.Sunday)

That's an AND condition, not an OR condition. It should read:

if (startDates.DayOfWeek != DayOfWeek.Saturday && startDates.DayOfWeek != DayOfWeek.Sunday)

*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

xnaLearner10-Dec-12 4:52

Re: Run through loop for week and dont select weekends

10-Dec-12 4:52

thanks for the help

Pete O'Hanlon10-Dec-12 4:53

Deploying a Windows Service

10-Dec-12 4:53

Not a problem.

*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

indian14310-Dec-12 4:09

indian143

10-Dec-12 4:09

Hi,

I have created a windows service, I want to deploy it on the server. Can anybody please help me in deploying it. When I googled for it, I found that I have to have project installer file in my project.

What is project installer file, how should I write it to deploy my windows service. I am new to this windows service field, any kind of help, code snippet, or link would be very helpful.

Thanks in advance.

Thanks & Regards,

Abdul Aleem Mohammad
St Louis MO - USA

Re: Deploying a Windows Service

Pete O'Hanlon10-Dec-12 5:04