Im trying to create 2 check boxes, but only one can be checked at a time or none can be checked.. I know radio buttons are used for this functionality but I need to be able to unchecked them as well so that neither are checked...any ideas? thanks -Jim...more >>

Decimal.Parse("100,5") returns 1005 when it should throw an InvalidFormatException. The locale is US therefore the "," is a thousand separator. Even if the parser confused it for the decimal separator it should return 100.5. Maybe this bug is already logged but I couldn't find it on MSDN. -- ...more >>

i am working with a form, i used default name form1.cs when i opened the project , now i want to change it but when i change the name on the properties window of the mainform , it does not change? how can i change this name? ...more >>

Dear Readers, I am attempting to define an array of IPAddress-es in C#. I wish to have a array of address so I can try in order to connect to them in a loop to handle unavailable hosts. Todate since I do not know how to define an array of IPAddress-es. I have been defining variable lik...more >>

Please help me with the following snippet float withdrawal=(objgetWithdrawal is float)? (float)objgetWithdrawal :0; float expence= (objgetSpending is float)? (float)objgetSpending :0; lblBal.Text="Current Balance = Rs." + (withdrawal-expence) > 0.0F? //here i am getting the error "Operat...more >>

I'm trying to use Visual Studio's Find/Replace to match VB declarations. This RegEx works fine in Regulator: ^\s*(Public|Friend|Protected|Private)*\s*(Shared|Overrides)*\s*(Sub|Function|Property )+ But when I try it in Visual Studio's find (with regular expressions turned on) it doesn't ...more >>

hello, how can i take the data i entered to a dataGrid and put it to a dataTable ( i know how to insert data to DataTable, i just don't know how to get the data from the dataGrid), by the way i'm writing in C#...more >>

I am having some troubles with loading up a type dynamically. From what i have read Type myType = Type.GetType("WB.DataAccess.FAQ"); is the exact same as Type myType = typeof(WB.DataAccess.FAQ); HOWEVER..... in practise it doesnt quite work..... using typeof always works.... howeve...more >>

There should be a way to mark methods without sideeffects with a special Attribute so that the compiler can recognize them and is able to issue a warning: public class string { [NoSideEffect()] // alternatively we could name it [RequireUseReturnValue()] public string Trim() { ...more >>

Hello, Ive got a form with 3 textboxes - one under the other. When I set the anchor to top, left, right, and bottom for each of them and resize the form at runtime, they change size in relation to the bottom of the form. This means the textbox on top stretches underneath the textbox below i...more >>

The following program outputs False rather than True. using System; namespace Test { public struct V { public bool booleanV; public void setBoolean(bool _value) { booleanV = _value; } } public class C { public readonly V Value; } public class StructB...more >>

Say i have namespace FOO.. and i want to get a list of all the types that are declared in FOO how can i do this? ...more >>

Hi, Is it possible to set ListView background image ? Thanx ...more >>

How would I convert this ASP code to C#? arrData = comPlusObject.Execute("a", "b", "c") for(i=0 to ubound(arrData)) response.write(arrData(i)) next Thanks, Jeff ...more >>

My stack trace contains: System.NullReferenceException: Object reference not set to an instance of an object. but the line of code it refers to looks like this: if (null == unit || ! unit.Enabled) return; Am I just missing something? The short-circuit evaluation of this line shoul...more >>

Anyone know how to cast an object to the type stored in a System.Type variable? I need to cast m_oValue to an int, bool, ect... based on the variable Type. public class TestClass { private object m_oValue; public System.Type Type; public object Value { get { return m_oValu...more >>

I have Visio Professional that comes with the MSDN Universal subscription. I need to reverse engineer a database using Visio and create the DDL. I can only find information on creating the script by building the database within Visio. Our database is already created. I want to reverse engine...more >>

Hi I define a public property in a new form and I can see this property in table of Properties in Visual. How I can hide this property to see only in code ? Thank's Boniek ...more >>

Does anyone know how to dynamically load an assembly from a location other that the working directory by using Assembly load method. It is important to use the specific method because is the method used by CLR to enforce version and security checking. I have try by changing the appdomain APPBA...more >>

Hi, Does Microsoft have a listing or a guideline for naming controls in a C# Windows application? i.e. combobox - cbx, dataset - ds Thanks, Lynn...more >>

hi, i would be very thankful if u can help me in solving this problem. my problem is i 've a page in that i'm displaying the creation dates of all files. these dates are like server dates . now i've to display these creationdates in the current logged in user desktop timezone. thanks ...more >>

Can anyone tell me how to convert a byte array to a stream.? Thanks Andrew ...more >>

Hi, I've begun converting an ASP site over to .NET and I'm a novice at both the new platform as well as C#. I have a COM+ object that returns a string array when it is called. The size of the array can vary depending on the parameters passed. What I need to do is loop through the returne...more >>

Hi All, I had posted a File IO Race condition question sometime back. With all your advice now I am opening a file to check whether a valid File Handle is returned or not? If not then I sleep for sometime and retry it. Problem is when I re open the File I am missing a line? Any Clues? bool IsFil...more >>

Hello, I have this class, which has an indexer and some methods, and the constructor of this class makes several calls to them. I would like the code in methods to have different behaviour depending whether the constructor is still running (and current method is called from the constructor), o...more >>

FieldInfo.SetValue() doesn't appear to work when trying to set the values of fields of a struct. Why? Because structs are passed by value and not reference? -- Thanks, Glen...more >>

Question, Say I have the following: Using(DataSet ds=new DataSet) { ... da.fill(ds) ... return ds; } What happens? Does the using dispose the dataset? Return is supposed to stop execution immediately, correct? Just wondering. Robert ...more >>

Anyone know where I can find a good reference info in events? I am learning .net c# with some success but I am slowed down when working with events. Basically I am looking for what triggers particular events. Many are intuitive some are not....more >>

I have this code from a site, http://www.csharphelp.com/archives3/archive554.html I can't figure out what the set{ m_Timeout = MinMax.max(value, 1); does. Compiling fails on the MinMax object. What is it? jc ...more >>

Hi, I made an application that displays a ListView that uses an Imagelist. I load the ImageList Control from a database I have no problems when the images are Icons or JPGs (including big sized JPGs). I come to troubles when I try to add a Bitmap (a large bitmap 1024x768 24bpp). Anyone can t...more >>

I am reading a file like so: using(FileStream inStream = new FileStream ("addresses",FileMode.Open,FileAccess.Read)) { } One of the strings is long and is displayed in a multil;ine textbox. When I do that carriage returns in the multiline text box do not produce the desired result, nei...more >>

How can I add a button to a datagrid and put in a click event in it? I have tried using the Property Builder and templates, but cannot get it to work. I think the problem is that it does not know which row is calling the click, but I am not sure how to correct this, to say that this click is com...more >>

Hello group, i want to overwrite or manipulate a attribute of a property in a derived class. I use a attribute DBInfo via reflection on my properties to set the parameters in a SQL-statement dynamically. Now in a derived class (similar table in the DB), the name of the column a other one. ...more >>

How do you do this? -- David ...more >>

This may not be a direct C# question, but since I'll be using using C# for development, I thought I'd pose the question here. I'll soon be involved in the design of a new software product that will employ a software "Plug-In" architecture. Taking the plug-in route will give us a design that ...more >>

I have a question to the following example: http://msdn.microsoft.com/office/understanding/excel/codesamples/default.aspx?pull=/library/en-us/dnexcl2k2/html/odc_xlnet.asp This example uses an external Add-in that connects an Excel workbook with a C# routine. I tried to make a new workbook wit...more >>

Anyone know if it is possible to have a button inside a datagird that will launch a new window? I have a button on my webform that does this currently and it works fine. I took that code and put a button into the datagrid template and wanted it to do the same thing per line and pass that line ...more >>

Can someone provide me with a simple example as to how to start and stop a thread that calls an instance method? All examples on the web seem to call static methods. Many thanks in advance. *** Sent via Devdex http://www.devdex.com *** Don't just participate in USENET...get rewarded...more >>

I am using the following code to populate a texst box: private string convertstring(string getLD) { Byte[] myBytes13 = {13}; string myStr13 = System.Text.Encoding.ASCII.GetString(myBytes13); Byte[] myBytes10 = {10}; string myStr10 = System.Text.Encoding.ASCII.GetString(myBy...more >>

Dear sirs I`ve used SQLDMO to make a backup to my database How can I use it to restore database? thanks Mohammed...more >>

Hi all, When I try to use the GetItemAt (e.X, e.Y) method in a ListView MouseDown() event, it only works some of the time. If I right-click on an open area of the ListView, I get null back as expected. If I right-click on a ListViewItem, I get that ListViewItem back. But then... if I right-...more >>

I'm making an application using csharp to connect to a database made by MSSql Server and i've already done backup for the database from the csharp and i need now to know how can i restore the database back by using csharp code....more >>

Hi, here is my trouble: I need to call 2 différents processes in a same dos window, the first one is needed for the 2nd, and I have to pass several different arguments to the 2nd. My problem is that there are as many dos windows as calls to "myProcess.start()", and I don't know how to do ......more >>

I'm trying to do the following: Class1 (= base class) public virtual Method1{} Class2 : Class1 public override Method1 { return base.Method1; //do some more processing specific to Class2 } Class3 : Class2 public override Method1 { return base.Method1...more >>

Hi all, I wonder if there is a way to make the height of the row of an item in a ListView larger than the default? Any suggestion would be great. Thank you once again! regards, Sean...more >>

I've never had time to catagorically go through them all so I'm just interested in finding out what namespaces people think are cool and why. My favourite is CodeDom, the ability to write code within code is intriguing then link that up with a compiler and you can make your program create another p...more >>

Hi all, I wonder if there is a way to prevent user from resizing the last column by moving the last vertical line on a ListView, meaning I don't want user to be able to move the last vertical line and change the width of the last column on a ListView. Any suggestion would be greatly ap...more >>

Hi, I have a problem. How do i create an instance of an unknown derived class? I'll explain more with the following code. abstract class Animal {} sealed class Dog {} sealed class Cat {} Animal GetAnimal(string name) { if (name = "a") return new Dog(); else re...more >>

Hi, As was pointed out whatever you return from a WebMethod needs to be serializable to SOAP. An ArrayList is not serializable. I will be needing to return other data types from web methods. Is there a document, or can some one list those types that are not serializable and the syntax for ...more >>

All: Is it possible at runtime to determine the names of all classes derived from a given class? -- John Hardin KA7OHZ <johnh@aproposretail.com> Internal Systems Administrator voice: (425) 672-1304 Apropos Retail Management Systems, Inc. ...more >>

Hi, All of our developers using C# VS.Net 2003 to develop websites are having problems with Events being deleted from their code by Visual Studio. It seems that object events defined in the properties window work for a while during debugging, and after a while visual studio decides that it do...more >>