Hi Can we read from an existing excel file, retrieve the values, take the 1st row, append apostophe to all the values in the first row and write back the appended values to the 1st row of the same file? If there is a solution, please do let me know. its very urgent. In anticipation of an i...more >>

Hi all, I need to write a GUI app which do the followings: 1. My app waits for events from other app(actually this is a network adapter driver) running in kernel. The driver writes to file and signal my app to read the file. 2. My app also need o communicate this the driver using IOCTL. Ca...more >>

I'm reading Professional C# (Wrox) and stumbled across: "Some features are supported by.NET but not by C#, and you might be surprised to learn that some features of the C# language are not supported by .NET (for example, some instances of operator overloading)!" How can some features be su...more >>

Greetings, How do I use FileUpload component to upload the file to a specify location in web server? For example, the file path is "c:\temp\uploadfile.doc," how to I get the file path? FileUpload.Text (I'm using C#)? how to I upload the file to web server 's "uploadfolder"? Thanks ...more >>

I've never tried to use windows messages to automate an application, but I've read some different blogs and articles that talk about sending keyboard input and mouse input. I wanted to describe what I want to do and hopefully someone here can tell me if it's possible or if I will be wasting...more >>

I'm trying to write a label printing SDI app with a small preview on the main form itself. Every time I run the InvalidatePreview event on the preview control to redraw the preview I get the "Generating Previews" dialog box while the preview is being generated. I want to suppress this. I've been a...more >>

Is there any way to use transactions if I use DbProviderFactory class to abstract from the provider? If not, is there any way to manage concurrency in a "universal"/provider indipendent mode? I've seen that when a DataSet is used (optimistic lock), if the update detect concurrency proble...more >>

Hi! Is there a way to check if file is already open/used by another process? I know that i can do something like this to check it try { StreamWriter sw = new StreamWriter(filename); sw.Close(); } catch (IOException) { // File is already open... } ...more >>

I am trying to figure out how to create a Process that spawns IE with a specific proxy (web-proxy:8080). Does anyone know how to do this? -- ----------- Thanks, Steve...more >>

Is there something in System.Environment that can tell me if the program is running on a 64bit OS? What I am thinking is right now is to check the size of IntPtr and if it is 4 then it is 32bit, but if it is 8 then it is 64bit. Thanks, Eric Renken ...more >>

Hi, first of all, I'm using: Microsoft Visual Studio 2005 Version 8.0.50727.762 (SP.050727-7600) Microsoft .NET Framework Version 2.0.50727 Installed Edition: C# Express. I have added a DataSet to my Form manually and also manually populated it with tables (columns and primary keys), ...more >>

I have a click once winform application which includes myapp.application file. The myapp.application contains the server url. The myapp.application file gets signed before deployment. Everything work great if my only target is my QA server. Here's the first problem: the guys that run the se...more >>

Hello All, I am binding a custom business object the gridview control. When I bind a datatable to the gridview control, the columns are displayed in the same order as the select statement used to populate the datatable. When I bind a custom business object to the gridview control, the co...more >>

Hi, I have this string: private string[] pairs = { "AB", "CD", "BD", "AC", "BC", "AD", "AB", "CD" }; Now I want to randomize all pairs, like the first AB to BA. for (int i = 0; i < 8; i++) { string pair = pairs[i]; Random rnd1 = new Random(); ...more >>

I have an app that is in .NET 2.0 C#. But it uses components for .NET 1.1 that handle remoting, etc. When I run the app I get the following runtime error: [SerializationException] Possible Version mismatch. Type System.Globalization.CompareInfo has 2 members, number of members deserialize...more >>

I have a JavaScript environment using IActiveScript and friends (via COM interop). At one point, the JavaScript passes me a function as a parameter to an object that has been inserted into the JavaScript using AddNamedItem. When I look at this object and ask it for its type, it says it is a S...more >>

Does anyone know if it’s possible to apply an ObsoleteAttribute to just the Get or Set of part a property in .NET 1.1? From my tests, I don't think you can, but I wanted to make sure. Thanks, DlgProc...more >>

I know this is a bit of nonstandard behavior, but I would like the Enter key to move focus through a group of radiobuttons without selecting them. The user would then have to use Space or actually click to select one of the radiobuttons to select. The default behavior of Focus() seems to also...more >>

hi I want to know different types way for calling child forms in a particular project.....I'm new to C# language and I'm not able to add child form in my project so plz anyone can tell me how to work wid child forms and mdi forms....... ...more >>

So I thought I saw recently some new MS serializer class (part of workflow foundation or something) that would serialize a lot of types the old XmlSerializer would not do. This included generic dictionaries. Can somebody point me to documentation on this or was I just up in the night? ...more >>

I have a windows service which spawns a lot of threads that are all busy doing various things. What is the preferred way of telling all these threads to stop? For a situation, when the user stops the service or the system is shutting down. I could kill the threads, but that generates Thre...more >>

Hi to all, I have a file that is locked and I get the message "file is locked by another user or process". How can I show which process has it locked (i.e. need the pid and the process name and path). Sham. ...more >>

What do you guys think of abandoning stored procedures and writhing the SQL in code? I'm a little new to the debate and not sure I totally understand. From my command object, I can just select the type to be "text" instead of "stored procedure", type my SQL there and it performs just the s...more >>

Hi, For some odd reason, I can't use Edit and Continue with my project anymore, and it's a real killer. It used to work before, and if I create a new project (VB or C#) it'll work _there_ just fine, but not in my current project. Not exactly sure why it isn't working - edit & continue is en...more >>

I am writing a similar program that I have written as a WebForm, only this is a WinForm. In the WebForm I check for a row count in a GridView. It works perfectly everytime when GridView1.Row.Count == 0. But, in my WinForm, this code: bindingSource4.DataSource = GetData2("Select id, parent_i...more >>

Does anyone know how to perform two way data binding between a combo box and a listview. The listview is bound to a dataset table in code: Binding Bind = new Binding(); DataTable dt; Field_LV.DataContext = dt; Field_LV.SetBinding(ListView.Items...more >>

Hello everybody... i reeeealy need a way to automatically execute a WinForm with the same permissions that i have with the LocalService user. Thanks in advance... ...more >>

My columns in dataGridView3 are generated on the fly from a Select statement, so I can't set up any columns properties before it is created. Sort of the way I make them visible or not like the following: this.dataGridView3.Columns[0].Visible = false; //id this.dataGridView3.Columns[1].Visible ...more >>

Hey, When I try to run the following code: System.Drawing.Image tiffImage = System.Drawing.Image.FromFile(@"C: \Image.tiff"); I get an "Out Of Memory" Exception. Does anybody know how can I overcome this problem? Thanks ahead --sternr ...more >>

Hi, What is that huge row margin on the left that allows you to select rows of a dataGridView called? I've looked and cannot find it named. I want it hidden because it is ugly. Any help is appreciated. Thanks, Trint ...more >>

public class MatarotHost : AxHost { public MyHost() : base("02FD5840-C1A3-448E-8310-98611DF58281"){ } public IPictureDisp GetIPictureDispOfPicture(Image image) { return (IPictureDisp)MyHost.GetIPictureDispFromPicture(image); } } Why I don't have in AxHost GetIPictureDispFromPic...more >>

Hi, I have dataGridView1 with a DataSource (categoriesBindingSource). I didn't use the vs.net workbench to bind the second datagridview (dataGridView2). I used this code: bindingSource1.DataSource = GetData("Select id, parent_id, name FROM categories where parent_id = '" + dgData1 + "' and a...more >>

Hi, I have a user control in which in have the following code : <%@ Control Language="C#" AutoEventWireup="true" CodeFile="RatingControl.ascx.cs" Inherits="UserControls_RatingControl" %> <script type="text/javascript"> function alterRating(rating) { var i; var img = document...more >>

I have a suggestion for C# I would like reader/writer locks to be built in to the language. When you want to aquire a loct on an object o you write lock(o) { ...//critical region } I would like to be able to write: readlock(o) { ...//critical region that only reads shared data }...more >>

Hi, In my usercontrol I bind the BindingSource I pass via property to all the control inside the usercontrol. For example Control ctl=new TextBox(); ctl.DataBindings.Add("Text", binding, prop, false, DataSourceUpdateMode.OnPropertyChanged); via ANTS Profiler I see that it takes so muc...more >>

Hi! I have these to methods: public override bool Equals(object obj) { if (obj == null) return false; Arg a = obj as Arg; if (t == null) return false; return Id == t.Id; } pu...more >>

Hi, I want to add two times the same picture box in two differents cells of a TableLayoutPanel. How can I do ? I don't want to duplicate my picture picture box. Thanks !...more >>

Hello, Yesterday I just started using Visual C# 2005 Express Edition and I'm trying to load external DLLs. I started out with trying to load just one like so: [DllImport("libtest.dll")] static extern void connections_init(); However when I call the function that wraps connec...more >>

This code works: Type t = myVar.GetType(); System.Reflection.FieldInfo[] fields = t.GetFields(); foreach (System.Reflection.FieldInfo field in fields) WriteLine(field.Name + " = " + field.GetValue(myVar); But, when one of the fields is an array of string, this will just print: field...more >>

One more for today.... As I add more and more lines to my RichTextBox the array that holds its strings gets bigger and bigger and the vertical scroll bar gets smaller and smaller until the string array finally runs out of memory. I'd like to set some line limit and once that limit is reach...more >>

in visual studio there are pinned panels. they are very responsive. How can create in my c# application pinned panel that works like vs also? so far I found nothing form google , built-in help. I know on PC's with less capable graphic card, the pinned panel may well become a bottleneck...more >>

I have written a Windows service which is consuming a webservices. When i am trying ti install the windows service using installutil.exe it gives me an errorr:- Exception occured while initializing the installation: System.IO.FileNotFoundException: File or Assembly name documnets, or one ...more >>

Hello, I'm trying to implement a backspace on the "bottom" line of a multiline text box. I want it to be ignored if it's already at the beginning of that line. I think I've got the part about removing each character from the string that represents that line, but how do I back up the caret...more >>

....just like the MIDL "enum" so I have access to this thing from the host side. Is it as simple as giving the enum a public attribute/guid? thanks! tima at predator dash software dot com...more >>

Hey Guys, I have a problem. I need to call event handler of buttons placed on a form on its keypress event. The Problem is i need to read a file which includes the button name whose click event is to be called and the KEY whose press event whould trigger the respective button's click event...more >>

I need to use the OpenFileDialog class to get the name of a file, but I don't want it to check to see if the file is really there since I may just want to type an arbitrary name in and create it later. I assume the correct way to do this is to handle the OK button click event. I found the fo...more >>

I wish to compare two structs via == but it does not compile. I can overload and create my own == but am I missing something that c# already has implemented? ~titan ...more >>

I tried to connect to an existing Oracle Database with the following ConnectionString: using System.Data.OracleClient; // + Added Reference "System.Data.OracleClient" string cs = "Data Source=XE;User Id=karl;Password=mypasswd"; connection = new OracleConnection(cs); connection.Open(); Th...more >>

Assume the following sequence of user actions starting with a Form and an e.g. StatusStrip: 1.) User doubleclicks on the StatusStrip 2.) VisualStudio jumps to the new generated source code mystatusstrip_itemClicked() { ..... } 3.) The user deletes this function from source code (because h...more >>

I added a StatusStrip "Sstrip1" to a Form "Form1". In the procedure private void Form1_Load(...) I added the following statement: Sstrip1.Text = "Text in my StatusStrip"; Unfortunately this text assignment is not recognized. When I call the program the StatusStrip is empty. How ...more >>