C# / C Sharp Forum

The user to only select items in collection of a combo box. My combo box was "AM" and "PM" in the Items property. I want the user only to be able to type in "AM" or "PM". Right now I can type anything in the combo box, like "QQ". How do I force the combo box to only allow items in the collection to be selected and/or entered?

Are there any built in time and/or date validation methods that one can make use of in .NET? thanks folks LDD

Hi, I build a web form with a 4-cell table on the top (flawlayout), followed by some labels and textboxes (gridlayout). The web form is displayed well in dell m60 laptop with all resolution options and DPI options. However when I tried to run it in a dell P3 desktop, labels and textboxes overlapped each other and they were in table area...

Is it possible to create a public Hash Table in Windows Forms? I.e., I place the Hash Table construction in the constructor of the form. But I would like to be able to reference it later in another class (i.e., not reconstruct it everytime). I have tried using the public keyword and this has had no affect. Any ideas? Do I need to...

In this code: XmlTextWriter myWriter = new XmlTextWriter(@"C:\Xmldata\myWriter.xml", null); Why do they have the @ at symbol? Why not just the string?

Hello all: I have a databound combobox (sorted alphabetically) that I wish to have a couple items moved to the top of the selection list so that everything but these two items are sorted in alphabetic order. The reason being these two items will be the most frequently used and as such would be better on the top rather than having to scroll...

What is the easiest way to get the width of a string based on font metrics?

Hey all, I am looking for a way to have a textbox autovalidate once the number of characters entered is == MaxLength. As it is now you have to hit tab to go to the next control.

Hello When i tried to: pictureBox.Size.Width = 100; i receive: DscFile.cs(58): Cannot modify the return value of 'System.Windows.Forms.Control.Size' because it is not a variable Why ? How can i change it's size ?

Please consider this code: XmlTextReader reader = new XmlTextReader("FileList.xml"); ListViewItem lvi = new ListViewItem(); try { lisInfoList.Items.Add("Starting XML file read..."); while (reader.Read()) {

I have a treeView with nested Items, I need to set for each node in tree a specific data like following Root--- ---Node1 (here i need to attach url for each item so when user click it display it in DHtmlDialog) ---Node2 ---Node3 so my question how to set this data for each item?

I have a mutli threaded application that needs to update XmlAttributes in an XmlDocument. Different objects need access to the same file at various times. The problem is I get an IO error - "The process cannot access the file..." - every now and then. Is it possible to lock down this file to enable syncronous access (i.e. if the file is...

Hi, foreach (ListViewItem item in listViewFiles.Items) { MessageBox.Show(item.SubItems.Text + ", " + item.SubItems.Text); string source=item.SubItems.Text; string destination=item.SubItems.Text; File.Copy(source,destination,true); item.SubItems.Text="Success"; }

This is for a Win form. SP sends back the PostMark date to my datagrid, shows proper date in datagrid. When user clicks on datagrid, the code sends the current row to text box. The text box shows the date and 12:00:00 AM. How do I get rid of the time? My code below. int rowNum = dgDealerInfo.CurrentCell.RowNumber;

Hi, The need is to read each line in a text file and based on the read data decision has to be taken whether to reposition the file pointer. The StreamReader.Position does not give current position. But it gives position in multiples of 1024. Also, I am not finding a way to reposition the pointer using FileStream-StreamReader combination....

Hello I have TabControl and some TabPages in it. How can i make active these pages ? (i have button on Page1 and after pressing that button i want to see Page2). Thanx Michal

This may be easier than I think, but I need to find a quick way to change a datetime object to string, as the following mydateobject = mydateobject.ToString(); renders the error: Cannot implicitly convert type 'string' to 'System.DateTime'

Not just in outlook (express) VBA, best using C# or other .NET languages.

Hello, I use this code to add users to LDAP directory. I always get the error "The server is not operational". Could you please tell me what is wrong? strServer = "localhost"; strPort = "389";

Thanks.

Hello I need to create some objects durring program execution - but it's names are dynamically generated (depends on parameters). How can i do it ? Thanx Michal

Hi, I took the ListView control from the toolbox, put it on the form, and when I tried to compile this (from my constructor): listViewFiles.Columns.Add("Source",-1,HorizontalAlignment.Left); I get an object reference not set error. The control on the form has this created by VS: private System.Windows.Forms.ListView listViewFiles;

Hi! Is there a way to customize a dialogbox. I want buttons with the text: Yes, No, Yes to all, No to all.. Also a dialogbox with a CheckBox. Regards Martin

Hi, I read this in a book about the Xml classes in c#: "These classes are abstract and therefore must be extended." I just wanted to know what this statement means. I know it is not in context, but the author gave it in such a matter that it appears experience folks will know what it means to say a class is abstract and extended. ...