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  • Protect value from changies using reflection?

    - by IordanTanev
    Hi, here is the problem case i am writing a little third party library. In this library i have a class like this public class TestClass { public int TestField { get; private set; } public TestClass( ) { TestField = 1; } } Then i have a varialbe form this class like this public TestClass test = new TestClass( ); The problem i am facing is that usnig reflection like this PropertyInfo field = typeof( TestClass ).GetProperty( "TestField" ); field.SetValue( test, 2, null ); programers can change internal value of this class. this will be very bad thing becouse it can crash the hole library. My question is what is the best way to protect my code form such changes.I know i can use some kind of bool flag so tha value can be changed only ones but this is not very good salution is there a better one? Best Regards, Iordan

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  • Content Assist problem in eclipse 3.5

    - by user361996
    I've got a Content Assist problem in eclipse 3.5, which is eclipse-java-galileo-win32.zip. When I press Alt+/(I've changed Ctrl+Space to this) in Java Editor, no assistant tips are shown up. I've solved this problem and I'd like to share my experience. 1 Eclipse--Preferences--General--Keys; 2 Search 'Content Assist'; 3 You'll find that in 'When' Field, the default value is 'in dialogs and window', change it to 'Editing Java Source', then press 'OK' to save; I can not post a image, but here is a link: http://www.freeimagehosting.net/image.php?e0987ea847.png That's All.

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  • The best way to structure this database?

    - by James P
    At the moment I'm doing this: gems(id, name, colour, level, effects, source) id is the primary key and is not auto-increment. A typical row of data would look like this: id => 40153 name => Veiled Ametrine colour => Orange level => 80 effects => +12 sp, +10 hit source => Ametrine (Some of you gamers might see what I'm doing here :) ) But I realise this could be sorted a lot better. I have studied database relationships and secondary keys in my A-Level computing class but never got as far as to set one up properly. I just need help with how this database should be organised, like what tables should have what data with what secondary and foreign keys? I was thinking maybe 3 tables: gem, effects, source. Which then have relationships to each other? Can anyone shed some light on this? Is a complex way like I'm proposing really the way to go or should I just carry on with what I'm doing? Cheers.

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  • Not all Code Paths return a Value Issue

    - by jorame
    I have this peace of code in a class(DataBase) and I'm getting "Not all Paths return a Value". Any help will be really appreciated. public static DataSet DELETE_PDT(String rowid) { SqlConnection con = new SqlConnection(); SqlCommand cmd = new SqlCommand("sp_DELETE_PDT", con); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("@rowid", SqlDbType.Int).Value = rowid; con.ConnectionString = ConfigurationManager.ConnectionStrings["WMS"].ConnectionString; try { con.Open(); cmd.ExecuteNonQuery(); cmd.Dispose(); con.Close(); } catch (Exception ex) { throw new Exception("Error while deleting record. Please contact your System Administrator", ex); } }

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  • Select where a value present

    - by Roy
    First a database example: id, product_id, cat, name, value -------------------------------- 1,1,Algemeen,Processor,2 Ghz 2,1,Algemeen,Geheugen,4 GB 3,2,Algemeen,Processor,3 Ghz 4,2,Algemeen,Geheugen,4 GB 5,3,Beeldscherm,Inch,22" 6,3,Beeldscherm,Kleur,Zwart 7,3,Algemeen,Geheugen,3 GB 8,3,Algemeen,Processor,3 Ghz I want with one query to select the follow id's: 1,2,3,4,7,8 Because the cat = algemeen and the name = processor by these products. ID 5,6 are only present by product 3. So, the entry's (cat and name) which are present by all products (product_id) have to be selected. The database contains 80.000 entry's with a lot of diffrent cat's, name's and value's. Is this possible with one query or is some php necessary? How do I do this? My apologies for the bad English.

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  • value not posting to php script

    - by user3710364
    step1 batch in dynamically loaded after selecting one of the value from dropdown step 2 is loaded by ajax call in setp 2 when i click on edit step 3 is loaded via ajax call again in step 3 when i click on edit ajax call is working fine but its nit posting the value to php script //ajax call function validateFees(strAddNo) { var collectFees = $("#collectFees").val(); if(collectFees == "") { $("#validateFeesResult").html('<div class="info">Please enter your Fees Amount.</div>'); $("#collectFees").focus(); } else { var dataString = 'collectFees' + collectFees + 'strAddNo' + strAddNo; $.ajax({ type: "POST", url: "validateFees_script.php", data: dataString, cache: false, beforeSend: function() { $("#validateFeesResult").html('Loading...'); }, success: function(response) { $("#validateFeesResult").hide().fadeIn('slow').html(response); } }); } } I'm sure it's extremely simple but I'm not understanding how to do it?

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  • How to get value from Java object

    - by JSF User
    I have this Java object private List<NewAccountObj> dataList; public class NewAccountObj { private int userid; public NewAccountObj(int userid) { this.userid = userid; } public int getUserid() { return userid; } public void setUserid(int userid) { this.userid = userid; } public List<NewAccountObj> getdataList() { return dataList; } What is the proper way to access a value from the object? Is this correct? <h:inputText id="userid" value="#{NewAccountController.dataList.userid}" validator="#{ValidatorAccountController.validateUserID}" autocomplete="off"> <f:ajax event="blur" render="useridvalidator" /> </h:inputText> Is there any other solution?

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  • how to return value through php function when called through the anchor tag in html

    - by sumit
    Look at my code below <a href="https://secure.gate2shop.com/ppp/purchase.do?merchant_id=234555454545433&merchant_site_id=54443¤cy=USD&total_amount=39.99&item_name_1=IncidentSupportTier1&item_amount_1=39.99&item_quantity_1=1&checksum=**call php function to get the checksum value**&time_stamp=2010-06-14.14:34:33&version=3.0.0" onmouseover="document.myform.sub_but.src='checkout02.jpg'" onmouseout="document.myform.sub_but.src='butup.gif'" onclick="return val_form_this_page()"> <img src="http://www.techvedic.com/gifs/checkout02.jpg" width="143" height="39" border="0" alt="Submit this form" name="sub_but" /> On button click the href link will open. But before opening the link I need to calculate the cheksum. I know how to calculate it in PHP script. But please tell me how can I call the PHP function which will return the checksum value. Don’t worry about the code in PHP script.

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  • Entity framework Update fails when object is linked to a missing child

    - by McKay
    I’m having trouble updating an objects child when the object has a reference to a nonexising child record. eg. Tables Car and CarColor have a relationship. Car.CarColorId CarColor.CarColorId If I load the car with its color record like so this var result = from x in database.Car.Include("CarColor") where x.CarId = 5 select x; I'll get back the Car object and it’s Color object. Now suppose that some time ago a CarColor had been deleted but the Car record in question still contains the CarColorId value. So when I run the query the Color object is null because the CarColor record didn’t exist. My problem here is that when I attach another Color object that does exist I get a Store update, insert error when saving. Car.Color = newColor Database.SaveChanges(); It’s like the context is trying to delete the nonexisting color. How can I get around this?

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  • Using AJAX to return SelectList selected value

    - by Adventure
    At risk of asking the obvious... I need to use AJax.ActionLink to send the current value of a SelectList back to my controller. How do I do that? Below is part of my current View. I need to replace "15" with the current value of the SelectList. <% If Model.ShoppingListNames IsNot Nothing Then%> <%: Html.DropDownList("ShoppingListNames", Model.ShoppingListNames)%> <%: Ajax.ActionLink("Add to List", "AdjustMaterials", "Docs", New With {.userDocId = 15, .prodId = Model.ID, .quantity = 1}, New AjaxOptions With {.OnSuccess = "handleUpdate"})%> <% End If%>

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  • retrieve value from db in php

    - by wangdoo
    I have a db in which 1 column value will be always null.I want it to pass to next page but it is passing all values of other column except this null value column. This is my code $row=mysql_query("SELECT * FROM `thirdpartycategorymaster` WHERE ISNULL(`delete`)"); while($row1=mysql_fetch_array($row)) { <td><b><a href="catdel.php?head1=<?php echo $row1['ThirdPartyCategoryName'] . '&&msg1=' . $row1['ThirdPartyCategoryID'] . '&&ctdel=' . $row1['delete']; ?> ">Delete</a></b></td> This my db table ThirdPartyCategoryID ThirdPartyCategoryName delete 29 ecommerce NULL

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  • How to disable listbox auto select item when pressing key

    - by tomfox66
    I have a listbox where I want to copy and paste items within that listbox. Copy and paste works fine but everytime I press "Crtl + C" the item starting with the letter C is automatically selected. Can this automatic selection be disabled or am I missing something here Here is the copy and paste method I implemented: private void listBox_Script_KeyDown(object sender, KeyEventArgs e) { if (e.Control == true && e.KeyCode == Keys.C) { int test = listBox_Script.SelectedIndex; Clipboard.SetDataObject(listBox_Script.Items[listBox_Script.SelectedIndex], true); return; } if (e.Control == true && e.KeyCode == Keys.V) { if (Clipboard.GetDataObject().GetDataPresent(DataFormats.Text)) { listBox_Script.Items.Insert(listBox_Script.SelectedIndex + 1, Clipboard.GetDataObject().GetData(DataFormats.Text).ToString()); return; } }

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  • Why the generated key size is not constant?

    - by Tom Brito
    The following code prints randomly 634, 635, 636, each time I run it. Why its not constant? public static void main(String[] args) throws Exception { KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA", "BC"); keyPairGen.initialize(1024); RsaKeyPair keyPair = new RsaKeyPair(keyPairGen.generateKeyPair()); System.out.println(keyPair.getPrivate().getEncoded().length); }

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  • get foreign key objects in a single query - Django

    - by John
    Hi I have 2 models in my django code: class ModelA(models.Model): name = models.CharField(max_length=255) description = models.CharField(max_length=255) created_by = models.ForeignKey(User) class ModelB(models.Model): category = models.CharField(max_length=255) modela_link = models.ForeignKey(ModelA, 'modelb_link') functions = models.CharField(max_length=255) created_by = models.ForeignKey(User) Say ModelA has 100 records, all of which may or may not have links to ModelB Now say I want to get a list of every ModelA record along with the data from ModelB I would do: list_a = ModelA.objects.all() Then to get the data for ModelB I would have to do for i in list_a: i.additional_data = i.modelb_link.all() However this runs a query on every instance of i. Thus making 101 queries to run. Is there any way of running this all in just 1 query. Or at least less than the 101 queries. I've tried putting in ModelA.objects.select_related().all() but this didn't seem to have any effect. Thanks

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  • C++ Access variable value using string representing variable's name

    - by Paul Ridgway
    Hello everyone, If the title was not clear, I will try to clarify what I am asking: Imagine I have a variable called counter, I know I can see its current value by doing something like: std::cout << counter << std::endl; However, assume I have lots of variables and I don't know which I'm going to want to look at until runtime. Does anyone know a way I can fetch the value of a variable by using its name, for example: std::cout << valueOf("counter") << std::endl; I feel being able to do this might make debugging large complex projects easier. Thanks in advance for your time. PS: Please do not respond with 'Google it', I have, though maybe not with the best query to get the answer I'm looking for...

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  • How I can use X-editable pass value to backend and get response

    - by leonlong
    I am new to jquery, recently I tried to use X-editable to edit a table. after I edited it , I want to pass value to PHP for process, but when I want to return something else back with value, it will get an error. What I mean is usually we can get several response from PHP, but I can get it like that through this. $('#example').editable({ type: 'text', name: 'example', url: 'exprediction.php', ajaxOptions: { dataType: 'json' }, success: function(newValue) { var response = newValue.split("|"); value1 = response[0]; value2 = response[1]; //it did not work } });

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  • SubSonic Change DropDown Value for Load Drops SUB

    - by GTJR
    I used the subsonic generator to create some aspx pages, It works fine. On some of the pages it automaticaly generated the dropdown boxes for foreign key values. How Can change that value in the load drops code? Or where I need to change it. For instance I have a workers table and a workersweek table. The workers table has a workerid,firstname and lastname field and the workersweek has a workerID field. The generator automatically set it up to show the firstname in the dropdown. I want to change the value to be both firstname and lastname. I am sure I will have to add code that does something like firstname + " " + Lastname. I am just not sure where to do it withing the code that was generated. I see the load drops sub, but it does not seem like that is the one I need to modify.

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  • Randomly choose value between 1 and 10 with equal number of instances

    - by user1723765
    I would like to generate 2000 random numbers between 1 and 10 such that for each random number I have the same number of instances. In this case 200 for each number. What should be random is the order in which it is generated. I have the following problem: I have an array with 2000 entries but not each with unique values, for example it starts like this: 11112233333333344445667777777777 and consists of 2000 entries. I would like to generate random numbers and assign each UNIQUE value a separate random number but have an entry for each value So my intended result would look like this: original array: 11112233333333344445667777777777 random numbers: 33334466666666699991778888888888

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