How do I convert a value in a textbox to a real number so I can perform some math ops on it? I understand I will need to validate the textbox's input to make sure it is a real number and not a string so any suggestions along those lines are also appreciated. Thanks, Scott ...more >>

Is there a way to create a collapsable datagrid. Where multiple areas of the grid can be expanded or collapsed? Using C# and Windows Forms ...more >>

Hi I have a question that is difficult to explain so I'll use code snippets to help me... I have my object: public abstract class MyTemplate<TKey> { public <TKey> Key; } public class MyObject : MyTemplate<int> { public string Code; } and I want to make a data access class that ...more >>

Hi all, I am writing the C# code function that take 2 parameters and access the data in the MS SQL database and return a SqlDataReader object. In my funtion, a SQL connection is established and open the connnection before reading the data. Everything seem to be fine, but once I add the close(...more >>

Hi, How I get the interface IViewObject of a RichTextBox Control? I would like to call the Draw Method with C#. Thanks Eric ...more >>

Is there a method that will take a full path and filename as a parameter and return just the filename? I am currently using the following code but it is extremely slow for files on a DVD. for (int I = 0; I < openVobDialog.FileNames.Length; I++) { FileInfo vobInfo = new FileInfo(openVobDialog...more >>

What could cause a stack trace like this? Message:Object reference not set to an instance of an object. Stack Trace: at System.Data.DataView.GetRecord(Int32 recordIndex) at System.Data.DataView.get_RowViewCache() at System.Data.DataView.GetElement(Int32 index) at System.Data.Da...more >>

Where whould I look to get find out how to implement a License or Serial number for software products? I would like some ideas for impleting a fairly simple solution, basically where can I look to find out what to do? Thanks, max...more >>

Hello, I am trying to convert a jpeg image stored in a PictureBox to a byte array in order to later save it to a database, but I get this error : "Generic Error in GDI+". The source code is the following (when clicking in a button): MemoryStream ms = new MemoryStream(); pictureBox1.Ima...more >>

I have the index of a line in the Lines array of a RichTextBox. I would like to have it scroll so that line displays at the top. Is there no way to do this? The only way I can see to make it scroll is with ScrollToCaret(). But I don't know how to set the "caret" to a particular line. Any su...more >>

I used Rational Rose UML for quite some time. When I generated code it didn't clobber my code. Rose put little markers which stated here you can put your personal modifications and Rose will preserve them after regenerating code. VISIO seems not to put any markers into the code it generates ...more >>

Is there any reason why you can't reuse a delegate object instance versus creating a new one each time? For example in the following scenario I have a DataPoints object with an array of DataPoint objects, each of these has a Changed event. My Client objects subscribe to some or all of the Da...more >>

Newish to c#, so go easy... I have a data class that does all my database work.. One method is 'getData'. I pass it a string which contains the SQL string, and it returns me a SqlDataReader. However, this means that where ever I call this class from, I need to include 'using System.Data...more >>

Hi everyone!!! I want to find all the words in a text that are different from the one i am looking for by one letter... It is hard to explain but maybe an example does the job. For example, i am looking for the word "working" These findings will be fine torking worsing workimg ...more >>

Hi, I want to add description of my functions in C#. I have there dll. This is for sure that I had to add XML documentation. But I don't know how to begin. I am new to C#. Help me by giving some example. Thanks in advance Teena ...more >>

hi groups, I have placed an listview control, i want to iterate thru the control = and find the clicked event items. listView2.Items.Add(fname[i].ToString(), i); how i can perform the iteration to find the item clicked...? and its = item. thankz--=20 M=E4h=E9sh Kum=E4r. R=20...more >>

I have a C# application in which I need to add one Active Directory group as a member of another group. I have tried using the same steps that work for adding a user to a group, but that isn't working. I'm just adding the distinguished name of one group to the member property of another. Eithe...more >>

Hi, Do you know where i could find some interesting documentation about DirectPlay for managed dev. I have been searching for a long time on the web without any success. Thanks. ...more >>