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  • Convert Null Value to String - C#.NET

    - by peace
    foreach (PropertyInfo PropertyItem in this.GetType().GetProperties()) { PropertyItem.SetValue(this, objDataTable.Rows[0][PropertyItem.Name.ToString()], null); } In one of the loops i get this exceptional error: Object of type 'System.DBNull' cannot be converted to type 'System.String'. The error occurs because one of the fields in the database has no value (null), so the string property could not handle it. How can i convert this null to string? I got this solution If you know a shorter or better one, feel free to post it. I'm trying to avoid checking on every loop is current value is null or not.

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  • jsf icefaces basic problem with displaying value

    - by michal
    Hi All, I don't know what I'm doing wrong.I'm using icefaces and have basic controller: public class TestingController { private String name; public String submit() { setName("newName"); return null; } public void setName(String name) { this.name = name;} public String getName() { return name; } } --------and view: <ice:inputText id="inp" value="#{testController.name}" /> <br> <ice:commandButton id="submit" value="SUBMIT" action="#{testController.submit}" /> When I submit the form after first displaying the page..the input is set to newName, next I clear the inputText to "". and submit again but the name is not set to newName again as I would expect but it's empty. thank you in advance for you help.

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  • Reset auto increment column value in script mysql

    - by Lucia
    Hi, I have two mysql tables, one needs to start its auto-increment column id with the last value of the last inserted row in the other table (plus 1). According to mysql manual you can restart the value of an auto increment column like this: mysql ALTER TABLE tbl AUTO_INCREMENT = 100; However, this is not possible: mysql ALTER TABLE tb2 AUTO_INCREMENT = (SELECT MAX(id) FROM tbl1); I need to perform something like this because I'm filling the tables using a script. Is there another way to achieve it?

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  • How to check a radio button based upon the enum value

    - by user281180
    I have an enum. Based upon the value brought by model, I have to check radio button. How can I do that? <%=Html.RadioButton("Role", Role.Viewer)%><%= .Role.Viewer%> <%=Html.RadioButton("Role",.Role.Reporter)%><%= Role.Reporter%> <%=Html.RadioButton("Role",Role.User)%><%= Role.User%> My enum would be having the numbers 1 to 3 for e.g. How can I check the Role.Viewer if enum value selected is 1?

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  • How to access a field's value in an object using reflection

    - by kentcdodds
    My Question: How to overcome an IllegalAccessException to access the value of a an object's field using reflection. Expansion: I'm trying to learn about reflection to make some of my projects more generic. I'm running into an IllegalAccessException when trying to call field.getValue(object) to get the value of that field in that object. I can get the name and type just fine. If I change the declaration from private to public then this works fine. But in an effort to follow the "rules" of encapsulation I don't want to do this. Any help would be greatly appreciated! Thanks! My Code: package main; import java.lang.reflect.Field; public class Tester { public static void main(String args[]) throws Exception { new Tester().reflectionTest(); } public void reflectionTest() throws Exception { Person person = new Person("John Doe", "555-123-4567", "Rover"); Field[] fields = person.getClass().getDeclaredFields(); for (Field field : fields) { System.out.println("Field Name: " + field.getName()); System.out.println("Field Type: " + field.getType()); System.out.println("Field Value: " + field.get(person)); //The line above throws: Exception in thread "main" java.lang.IllegalAccessException: Class main.Tester can not access a member of class main.Tester$Person with modifiers "private final" } } public class Person { private final String name; private final String phoneNumber; private final String dogsName; public Person(String name, String phoneNumber, String dogsName) { this.name = name; this.phoneNumber = phoneNumber; this.dogsName = dogsName; } } } The Output: run: Field Name: name Field Type: class java.lang.String Exception in thread "main" java.lang.IllegalAccessException: Class main.Tester can not access a member of class main.Tester$Person with modifiers "private final" at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:95) at java.lang.reflect.AccessibleObject.slowCheckMemberAccess(AccessibleObject.java:261) at java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:253) at java.lang.reflect.Field.doSecurityCheck(Field.java:983) at java.lang.reflect.Field.getFieldAccessor(Field.java:927) at java.lang.reflect.Field.get(Field.java:372) at main.Tester.reflectionTest(Tester.java:17) at main.Tester.main(Tester.java:8) Java Result: 1 BUILD SUCCESSFUL (total time: 0 seconds)

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  • Query for value where a default namespace node exists

    - by Jay
    I have the following XML that is provided to me and I cannot change it: <Parent> <Settings Version="1234" xmlns="urn:schemas-stuff-com"/> </Parent> I am trying to retrieve the "Version" attribute value using XPath. It appears since the xmlns is defined without an alias it automatically assigns that xmlns to the Settings node. When I read this XML into an XMLDocument and view the namespaceURI value for the Settings node it is set to "urn:schemas-stuff-com". I have tried: //Parent/Settings/@Version - returns Null //Parent/urn:schemas-stuff-com:Settings/@Version - invalid syntax

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  • Set both Text and Value property of ComboBox in design time

    - by The King
    I need to add the following items to a combo box. Value DisplayText Mpost Posted Call Calling RScan Re-Scan These items are fairly static, and is not retrieved from any database... Hence thought of assigning these in design time itself. I'm Unable to use Items property as it asks only one value per item... Could you please help. Ps : In case you are suggesting BindingSource, could you please give me an example. I was not able to find one.

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  • Mock a void method which change the input value

    - by Kar
    Hi, How could I mock a void method with parameters and change the value parameters? My void method looks like this: public interface IFoo { void GetValue(int x, object y) // takes x and do something then access another class to get the value of y } I prepared a delegate class: private delegate void GetValueDelegate(int x, object y); private void GetValue(int x, object y) { // process x // prepare a new object obj if (y == null) y = new Object(); if (//some checks) y = obj; } I wrote something like this: Expect.Call(delegate {x.GetValue(5, null);}).Do (new GetValueDelegate(GetValue)).IgnoreArguments().Repeat.Any(); But seems like it's not working. Any clue on what could be wrong?

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  • ColdFusion static key/value list?

    - by richardtallent
    I have a database table that is a dictionary of defined terms -- key, value. I want to load the dictionary in the application scope from the database, and keep it there for performance (it doesn't change). I gather this is probably some sort of "struct," but I'm extremely new to ColdFusion (helping out another team). Then, I'd like to do some simple string replacement on some strings being output to the browser, looping through the defined terms and replacing the terms with some HTML to define the terms (a hover or a link, details to be worked out later, not important). Can anyone point me in the right direction of: How to define the stucture (if that is what I need for a key/value pair list) How to query at the application start-up and reuse the list properly The best way to do the string replacement

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  • When to pass by value?

    - by Dervin Thunk
    Dear all. I was wondering if there are examples of situations where you would purposefully pass an argument by value in C. Let me rephrase. When do you purposefully use C's pass-by-value for large objects? Or, when do you care that the object argument is fully copied in a local variable? EDIT: Now that I think about it, if you can avoid pointers, then do. Nowadays, "deep" copying is possible for mostly everything in small apps, and shallow copying is more prone to pointer bugs. Maybe.

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  • Get a CSS value from external style sheet with Javascript/jQuery

    - by Acorn
    Is it possible to get a value from the external CSS of a page if the element that the style refers to has not been generated yet? (the element is to be generated dynamically). The jQuery method I've seen is $('element').css('property','value');, but this relies on element being on the page. Is there a way of finding out what the property is set to within the CSS rather than the computed style of an element? Will I have to do something ugly like add a hidden copy of the element to my page so that I can access its style attributes?

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  • SQL Server Concatinate string column value to 5 char long

    - by mrp
    Scenario: I have a table1(col1 char(5)); A value in table1 may '001' or '01' or '1'. Requirement: Whatever value in col1, I need to retrive it in 5 char length concatenate with leading '0' to make it 5 char long. Technique I applied: select right(('00000' + col1),5) from table1; I didn't see any reason, why it doesn't work? but it didn't. Can anyone help me, how I can achieve the desired result?

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  • Comparing Page.User.Identity.Name to value in sql Table

    - by Peggy Fusselman
    First, I am SO sorry if the answer is out there. I've looked and looked and feel this is such a simple thing that it should be obvious. I'm wanting to make sure only the person who added an event can modify it. Simple! I already have a datasource that has event_added_by as a data point. It is populating a FormView. SelectCommand="SELECT * FROM [tbl_events] WHERE ([event_ID] = @event_ID)" And I have Page.User.Identity.Name. How do I compare the two? I can't pull the value from the label in the FormView so I need to find another way. if (!IsPostBack) { string uname = Page.User.Identity.Name; string owner = ""// this is where I need to grab the value from dsEvents; if (uname != owner) { //Send them somewhere saying they're not allowed to be here } } TIA for any help!

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  • Change Makefile variable value

    - by paulgray
    Is there a way to reassign Makefile variable value inside of the target body? What I am trying to do is to add some extra flags for debug compilation: %.erl: %.beam $(ERLC) $(ERLFLAGS) -o ebin $< test: clean debug_compile_flag compile compile_test debug_compile: $(ERLCFLAGS) += -DTEST So if I invoke test target I would like to clean up my environment, add some new flags (like -DTEST to the existing ones), compile the whole code once again (first sources, then test modules). I do not want to copy/paste the code for compiling with some new flags set since there is a lot of logic put here and there. Is there some easy way to redefine the variable value so I can reuse the existing code?

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  • Show up value of select option in IE

    - by Pete
    Hello, I have a problem with a html select object and its options in IE. My html <select id="Select1" onchange="closeMenu1(this.value)"> <option></option> <option>1</option> <option>2</option> And the javascript function closeMenu1 (x) { var show = document.getElementById("divID"); show.innerHTML = x; } Now, in every browser except the IEs the divID will show up the value which I selected in the select object. But IE doesn’t. Can somebody please tell me a way around that? Thanks.

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  • dijit.form.FilteringSelectinitial initial value always null.

    - by jiggs
    I'm using QueryReadStore as data and displaying the widget using the declarative way. My store looks like this: <div style="display:none" jsId="role_store" url="some/url/here" requestMethod="post" dojoType="dojox.data.QueryReadStore"></div> My widget is like this: <input dojoType="dijit.form.FilteringSelect" id="role_id" name="role_name" required="false" store="role_store" value="100" searchAttr="description"> Scenario: store is declared inside the HTML page. widget is loaded using parse.parse in the javascript. Issue: At first click no displayed value on the widget. But at the second click, values are displayed right.

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  • SQL Server Concatenate string column value to 5 char long

    - by mrp
    Scenario: I have a table1(col1 char(5)); A value in table1 may '001' or '01' or '1'. Requirement: Whatever value in col1, I need to retrive it in 5 char length concatenate with leading '0' to make it 5 char long. Technique I applied: select right(('00000' + col1),5) from table1; I didn't see any reason, why it doesn't work? but it didn't. Can anyone help me, how I can achieve the desired result?

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  • Need sorted dictionary designed to find values with keys less or greater than search value

    - by Captain Comic
    Hi I need to have objects sorted by price (decimal) value for fast access. I need to be able to find all objects with price more then A or less than B. I was thinkg about SortedList, but it does not provide a way to find ascending or descending enumerator starting from given key value (say give me all objects with price less than $120). Think of a system that accepts items for sell from users and stores them into that collection. Another users want to find items cheaper than $120. Basically what i need is tree-based collection and functionality to find node that is smaller\greater\equal to provided key. Please advice.

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  • How to change color of a cell in one sheet if its value increases or decreases from another cell value in a different sheet

    - by Sean Coffey
    I am putting together a workbook with 52 sheets for the weeks in the year. In this workbook there are multiple columns for percentages on each sheet. I want to be able to change the color of each cell based on whethernit increases (green) or decreases (red) from the same cell in the previous sheet. I have the formula i.e. =IF(ISERROR(B4/D4),"0", B4/D4) to calculate my percentages but I don't know how to put the reference in for this change. Any help?

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  • how to change the value to a name depending on case

    - by ZeroSoul13
    i've created a select button with 3 option <%= f.label :prioridad %><br/> <%= f.select :prioridad, options_for_select([['Alta', 1], ['Medio', 2], ['Baja', 3]]) %> The value gets inserted to the DataBase but when i display it i see the number op the option selected (which is correct). What i would like to know is how i can change that so on the index the user can see the name and not the value: def convertidor case llamada.prioridad when prioridad == '1' puts "Alta" when prioridad == '2' puts "Media" else puts "Baja" end end This didn't worked. Regars

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  • formatting a column based on another columns cell TEXT not value in excel

    - by lisa
    I have dates that are running off a formula in that column based on information it is collecting from other worksheets. I have another column that lists text answers based on a different formula that that column is running. It is a customer list that runs with names going down page and multiple columns of information for each client running across page What i want to do is: If column j says "paid" then turn column m - same row - a color or border or something I will repeat this formula for the various things that j can say, just cant figure out how to make conditional formatting read j to change m. To complicate things, in addition to the formula running to collect the date in m, there is also a conditional format set up for m that changes the color of the cells after a certain date. I want to be able to keep that formula, in addition to the one that you are assisting with...i will use highlighting, or something different to avoid any conflicts.

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