See the code below. I have had some problems with setting databindings and then not having them work. So I wrote the code below. It runs during the constructor phase for the entire form. Is there a reason that these databindings don’t appear in the output? What am I missing? Notice tha...more >>

Hi, Is it possible to remove an event handler once it's installed with AddHandler? Below is the event I added and it works fine. Later in my code I want to remove it. I tried using this statement: (AddHandler mOwner.CmdFirst.Click, Nothing) to remove it, but this does not work. Help! AddHa...more >>

Hello, I use one form with a DataGrid control for navigation through a DataTable and a second form with TextBoxes for some detail data. The second form should reflect the current data row of the first form. My question is: Is it possible to bind the controls to the second form to the Cur...more >>

Hi, I have a problem with a currencymanager bind with a datatable which is the datasource of a Component One True DBGrid. An event update the datatable every 30 seconds and the problem occurs when we have one record and we pass to none, or we don't have any record and we add one record. When ...more >>

1) In MS ACCESS we have a mean to determine that we are on a new record. How can we test this in ado.net with vb.net 2) Suppose the following problem occurs: A client put an order. The amount of the product that he or she orders is lager than the stock. Is it possible with vb.net that in such a...more >>

Hello newsgroup, If this should be the wrong group for my questions, I apologize. I am a newbie to .NET and try to achive the following: A Treeview should be filled with nodes from a database. The table has this structure: Node_id NodeText ParentNode The number of nodes and...more >>

I have a custom collection that inherits from CollectionBase. It is bound to a DataGrid, and now I want to disable the append row in the DataGrid. The way I was going to do it is to set the DataView AllowNew property to False. Something like this: Dim myCollection as Collection myCollectio...more >>

Hi all, Using VB.NET i have a collection of 12 fairly large (largest file is 100MB) CSV files. I have a SQL Server data structure that mimics the structure of these csv files. I need a method in code of getting the data from these CSV files into my SQL Server. Slight addition to this prob...more >>

When the header text of DataGrid is Right aligned ,then the last few pixels of the header text is clipped off.I tried padding the text with a space or two but this seems to be trimmed before the text is rendered. This problem is detected in windows XP.But when the same code is run on Win...more >>

Is the source code available for the Data Form Wizard for C# in the Visual Studio .NET 2003...more >>

[ I am using VS2005 c# ] Hello, I am looking for a description how to use lookup binding in accordance with a DataGridViewColumn. I found a nice article about "lookup binding", but i does not use a DataGridView. Article => Ari Roth's Blog => "Complex Binding and Lookup Binding" =>...more >>

I have successfully bound a ComboBox to a StringCollection so that the Strings in the collection show up in the ComboBox. Is it possible to also bind the selected string of the ComboBox to a property in some other object? Sample code (MC++): //Create the string collection StringCollection ...more >>

When using the writexml feature of the dataset is there a way to specifiy which tables are written to the XML file or do I have to write all tables in the dataset to the file? I realize I could just copy to another dataset but am concerned about memory usage when duplicating data in memory....more >>

Hi I am making a simple contacts app involving clients, suppliers etc. Mostly it involves data entered by the user being saved in the db and then user able to search/browse the data. My question is; is it still advantageous to bind ui elements to clients, suppliers "business" objects which ...more >>

Hi All, I have a Public Class PurchaseOrder which contains a POItemCollection Public Class POItemCollection Implements IList, IEnumerable The PO ItemCollection contains an ArrayList of POItem which have the following properties InventoryID, Description and Price I have ...more >>

Hello! I have the following problem: I have a DataGridView with is bound to a Collection that implement ITypedList and IBindingList. The contained objects are using primitive Types like string, datetime, etc. When I clear the displayed value in a TextboxColumn, the original value is insert...more >>

Is there way to make a dataview span two tables in the same dataset? Per the information I have read this does not seem possible... but wanted to confirm with this email list. PS. I'm using .NET 1.1 ...more >>

I have a window forms client that adds records to a SQL Server database and then it displays the records in a forms datagrid. Here is the code that performs those 2 tasks: connection = new SqlConnection(connStr); connection.Open(); //create a SqlCommand object and assign the connection ...more >>

Hi, I have a custom control which consists of a combobox(simple) and a button. The custom control performs a lookup/search function. How can I create a datasource that is exposed for when I place the control on a form? The only thing I've really been able to find is a code-snippet to expose...more >>

I have a detail form that is bound to a row in a DataTable. I have a button on the form that goes through the bindingsource to set a property value on the row. The data is changed in the row, but is not reflected by the control on the form. It appears that data binding isn't picking up the ...more >>

I have a strongly-typed DataTable, with my validation code in the partial class (behind the ColumnChanged event). I have a single row of data bound to a detail form. That form also has an ErrorProvider control bound to the same binding source as all the controls. When I load the form with ...more >>

when I use the cm.addnew method to add datarow, I know the editing can be completed with bindingcontrol, such as textbox, if i have some columns which I have not bind it on winform, how to edit them with coding? I cannot find it in datatable, it looks like "unsave record". Thanks in advance. ...more >>

We use customized types of EventHandlers with different EventArgs for the "Changed" events in varoius classes that are databound. This seams to be a problem: we get an exception in the internals of databinding saying that the type could not be converted to the target type. Using the system type ...more >>