I'm developing a WinForms (VB.NET 2.0) application where I have a user control which contains several fixed controls (toolstrip, buttons, panels, etc.).
This works just fine - the problem is that I want one (and only one) Panel control within my user control to act as a container where other controls can be placed in the form designer.
I can set a designer attribute for the entire user control which causes the entire user control to be a container - but I only want one specific Panel control in the user control to act as a container.
I'm trying to understand form.resx files. Particularly what is put in them and why. I have found plenty of information on resx files in general, but I am looking specifically to understand the relationship between the Visual Studio form designer and the form.resx files.
Most of the little I have seen on the topic says that the file is to facilitate localization and something about storing images for the form. The link to localization is definitely real, since when I select a different location I get another resx file for that location. Based on that, I assume that the default resx file is tied to the default location.
The specific issue that has me interested in this topic is as follows:
I have created a customizable form framework that allows users to filter a huge list of properties down to the ones that they care about. The initial list of properties is generated by reflecting on the business object that the form edits. Another form allows them to shift properties from a list to show and a list to hide. A custom attribute called ControlDescription can decorate the business objects' properties to specify the type of control to show, and additional information such as a domain to populate values in a drop-down list. A FormConfig object keeps all of the form customization settings, which consist of a series of show and hide property lists for the various business objects.
So what does all this have to do with resx files? Well, the forms are serializing the FormConfig object into the resx file. More accurately it is serializing each item in each list into the resx file. These lists are pretty long because the business objects have so many properties, which is why all this madness was developed in the first place. Anyway, I can't figure out why it serializes this particular object into the resx. It seems to be causing problems, because the resx files are getting corrupted on a fairly regular basis.
A typical (slightly absurd) error is:
Object of type 'Us.Fed.Fs.Nris.Nrvs.BusinessObjects.ControlDescription' cannot be converted to type 'Us.Fed.Fs.Nris.Nrvs.BusinessObjects.ControlDescription'.
My hope is, that if I understood what the resx is doing and why, that I can either prevent it from serializing these objects by restructuring the application, or avoid whatever is causing the corruption of the resx files.
I created a small windows which has a textbox and a button.
I want to make the cursor is in the textbox when the windows loaded, so users can easily input there. No problem I got to made it. But now I want after user input some text, they could push the button by just press enter on keyboard ( without press tab before enter ).
Iam using Windows Datagridview...So iwant running time automatically ID has to generate.and one more think running time ID should not modify anything.and How to create a New row...So pls tell how to do...
I am using Datagrid control in WinForms...So iam iam Using command buttons are Insert,Update,Delete,Cancel. so i need coding part for these commands Buttons.So pls help me. this Critical situation..Pls..
Below is the code snippet showing how we can insert, update and delete records using ADO.NET with DataGrid control.
Private Const SELECT_STRING As String = _
"SELECT * FROM Contacts ORDER BY LastName, FirstName"
Private Const CONNECT_STRING As String = _
"Data Source=Bender\NETSDK;Initial " & _
' The DataSet that holds the data.
Private m_DataSet As DataSet
' Load the data.
Private Sub Form1_Load(ByVal sender As Object, ByVal e As _
System.EventArgs) Handles MyBase.Load
Dim data_adapter As SqlDataAdapter
' Create the SqlDataAdapter.
data_adapter = New SqlDataAdapter(SELECT_STRING, _
' Map Table to Contacts.
' Fill the DataSet.
m_DataSet = New DataSet()
' Bind the DataGrid control to the Contacts DataTable.
Private Sub Form1_Closing(ByVal sender As Object, ByVal e _
As System.ComponentModel.CancelEventArgs) Handles _
If m_DataSet.HasChanges() Then
Dim data_adapter As SqlDataAdapter
Dim command_builder As SqlCommandBuilder
' Create the DataAdapter.
data_adapter = New SqlDataAdapter(SELECT_STRING, _ CONNECT_STRING)
' Map Table to Contacts.
' Make the CommandBuilder generate the
' insert, update, and delete commands.
command_builder = New SqlCommandBuilder(data_adapter)
' Uncomment this code to see the INSERT,
' UPDATE, and DELETE commands.
'Debug.WriteLine("*** INSERT ***")
'Debug.WriteLine("*** UPDATE ***")
'Debug.WriteLine("*** DELETE ***")
' Save the changes.
You may make some more enhancement in the code. For example, you may check the DataSet's HasChanges method to see if there are any changes been made before you go to create a new SqlDataAdapter and SqlCommandBuilder. It may also be more efficient to save changes grouped by type: all inserts, all updates, all deletes. The basic program, however, is trivial and is perfectly adequate if the user won't make a huge number of changes.
Hi, new to C# but getting there, need help on the following:
I have a MainForm with three panels on it, top, left and bottom. When I click a button on the MainForm the left panel gets a new form displayed in it with buttons on it. What I need to know is how to I change the top panel's controls in the MainForm when this buttons are clicked on the SecondForm that is displayed in the LeftPanel on the MainForm.
My application has one MDIparent (say MDIparent.cs) and a tool form (say mainform.cs).
A text box in the mainform.cs takes some strings as input and displays the resulting data on the form. There are thousands of strings that can be entered in the input field that give different data for that particular string.
After entering my first string in the mainform, i open a "new" form in the MDIParent (File-->New) to give me another window of form so that i can calculate data for a different string.
However, when i do that, the application seems to be over-writing the data of the new window onto the first form and vice versa.
My goal is to keep keep the data different for different strings, separate.
Is it a problem with MDIParent or form?
Can anyone give me an idea how can i make sure that the form only subscribes to the proper event on itself alone?
Are both filepath and destinationpath parameters a fully qualified file name or is destinationpath just the target folder? File.Copy can only copy files, so both parameters need to be fully qualified file names.
You will get this exception if an I/O error occurs (unlikely) or the destination already exists, which is what is happening here. You can either do a File.Exists test before the copy and only copy if the file doesn't exist, or use the File.Copy(String, String, Boolean) form and pass in true as the boolean value to indicate that you want to overwrite the file.
Scott. —In just two days, tomorrow will be yesterday.