CheckedListBox DataSource property

Windows Forms Data Controls and Databinding

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    - Database Project Setup Hello, I am having troubles understanding the dynamics of publishing or creating a setup for a database project. I have a VB Windows forms database application which contains a database in it. I am using it in my development environment with no problems. However, when I publich it using click once or adding a setup application, I can never get the application to work correctly in the target machine. It seems that the application can't find the MDF file or attach the database. What is the best scenario in this situation Thanks PS: My connection strings includes the "AttachDbFilename" directive. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Sending Fax Hi fellows, I am just curious to know if there is any .NET classes that can be used to send fax from a windows application. Thank you. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Enabling/disabling datagridview depending on datasource values Hi,there are two important things in your question: 1, how to change the cell state by the value 2, how to disable the datagridviewcell you can find the answer in the following faq: How do I color a cell in a DataGrid depending upon its value or some external method How do I disable a cell Regards. Gavin Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Getting selected index from ListView You are right, listView1.SelectedIndices get the collection of indices while listView1.SelectedItems get the collection information of items. That's the difference. Thanks Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - How to scroll controls in a custom control i.e. s there a way to change the position of the child control on scrolling? This is exactly what i am doing. I have overridden the OnPaint event to render the PDF page. I am only adding controls that relate to PDF Form Fields(i.e. Empty Signature, text boxes, radio buttons etc) page wise. For each page i have a panel and then i add those form fileds init as child control. So the method which i sent was only specifc to the form fileds. I sucessfully add them but when i try to move those controls on scrolling the contrlols flicker and they really do look ugly. I want those controls to move smothly just like when added to windows form and scrolled. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - How to implement copy/paste/cut/undo/redo commands in C#? I think I can get it work now. For example to cut a selected text in a ComboBox: if (ctrl is ComboBox ) { ComboBox theComboBoxControl = ( ComboBox )ctrl; string tmp1 = "" ; string tmp2 = "" ; string tmp3 = "" ; int selectionStart = theComboBoxControl.SelectionStart; int selectionLength = theComboBoxControl.SelectionLength; for ( int i = 0; i < selectionStart; i++) { tmp1 = tmp1 + theComboBoxControl.Text[ i ]; } for ( int i = start; i < selectionStart + selectionLength; i++) { tmp2 = tmp2 + theComboBoxControl.Text[ i ]; } for ( int i = selectionStart + selectionLength; i < theComboBoxControl.Text.Length; i++) { tmp3 = tmp3 + theComboBoxControl.Text[ i ]; } theComboBoxControl.Text = tmp1 + tmp3; if (tmp2 != null ) { Clipboard .SetText(tmp2); } theComboBoxControl.SelectionStart = selectionStart; } ----------------------- By the way, if someone knows a better way of doing it, please let me know. I just started learning C# a few weeks ago and I found this forum is really helpful! Thanks everyone again. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Performance impact on use of this/me keyword The this/me keyword isn't required in many circumstances. Is there a performance advantage or disadvantage to using it when it's not required Gus Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Custom Folder I need to create folder in every user folder when i setup my application on other machines Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Modal Form Hi all, I need to show a form as dialog to a parent window only not modal to the entire application. see if i have three forms form1, form2, form3 first i showed form3, then form1 and set form2 as modaldialog from form1 , now i cannot access form3 also without closing form2, ie form2 is modal to the entire application Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Why to double click SQL DB File for connecting. The fact that you're not seeing the connection in Server Explorer would explain why you get the exception. When you double-click the file we recreate the connection for you. But what's interesting is why the connection isn't created automatically when you open the project. Normally VS will do that for you. A few of questions: 1. Is this a web site or a client app (Windows forms, console, etc.) a. If a web app, is the database file stored under your App_Data folder 2. Is Server Explorer already opened when you open your app 3. Do you have any VS service packs installed 4. Are you running over a Remote Desktop session or are you working directly on the local machine Thanks, Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Web browser problem Under Internet Options in IE, click the Advanced Tab. Under Security, check "Allow content from My Computer" Hope this helps, Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Assigning icon from default settings on target machine I know that the icon for the .pdf extension is correct as the file that the start menu shortcut is targeted at (in the installation folder in Program Files) has the correct icon. Also I can query the registry to extract the correct icon. This information just doesn't seem to get passed on to the shortcut in the Start menu though. If I create a shortcut by hand, next to the actual PDF, it picks up the correct icon. If I move this shortcut to the start menu, it still has the correct icon. There just seems to be something special about the shortcut that the Visual Studio setup project creates (if I right-click on it and select Properties, the Change Icon button is greyed out, unlike the shortcut I created by hand). Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Textbox value lost while validating This looks like it's a bug in .net. With the form set to autovalidate = diabled, then a call to validatechildren causes validate events on all the controls on the form, but only the first one with changed contents generates a property-set call. However - once I implemented INotifyPropertyChanged in my object, (even without actually raising the event at all ) everything behaved as it should . . .very strange. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - DataGridView, CheckBox fields and Strongly Typed datasets.... Im now seeing this happen with a Datagridview that has no check boxes but instead has a dropdown cell and a couple of button cells. Does the VS design team know about this issue Its not earth shattering by any means but it is annoying and it does take some time to reset all the fields back to the way that they are supposed to be. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Find a window control at a point on the screen Can you give me more details on how to do that I am really confused. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - MaskedTextbox and allowing only valid int input I’m trying to setup a MaskedTextbox on a form to allow for only valid int input, but can’t seem to get something that I’m happy with. What I need is that the user enter something that’s entirely numeric (no decimals or negative signs), a minimum of 1 digit and a max of 4 digits. I’ve set the following properties: Mask=”0000”; ResetOnSpace=false; TextMaskFormat=MaskFormat.ExcludePromptAndLiterals;, and if you type in “323_”, or “_323”, its fine, and it doesn’t allow the user to press space. But, if you clear the field and type 3 (right cursor over) 23 to produce “3_23”, it obviously does not parse as a valid int. I then decided to try setting the maskedTextbox1.ValidationType = typeof(int); and setting up a typeValidationCompleted event, but unless the whole mask is completed (4 digits), it fails. How can I get this to work in my favor Its almost to the point that I just roll my own based on the standard textbox. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - DataGridView Scrollbar Ok, VB guys, I translate my codes into VB.NET for you: Public Class DgvScroll Inherits Form Private timer As Timer Private dt As DataTable Public Sub New () MyBase .New() InitializeComponent() End Sub Private Sub DgvScroll_Load( ByVal sender As Object , ByVal e As EventArgs) Handles MyBase .Load dt = New DataTable dt.Columns.Add( "id" , GetType (System.Int32)) dt.Columns.Add( "name" ) dt.Columns.Add( "aa" ) Dim j As Integer = 0 Do While (j < 25) dt.Rows.Add(j, ( "Row " + j.ToString), "aa" ) j = (j + 1) Loop Me .DataGridView1.DataSource = dt 'HScrollBar hScroll = this.dataGridView1.Controls[0] as HScrollBar; Dim vScroll As VScrollBar = CType ( Me .DataGridView1.Controls(1), VScrollBar) AddHandler vScroll.Scroll, AddressOf Me .vScroll_Scroll AddHandler vScroll.MouseLeave, AddressOf Me .vScroll_MouseLeave timer = New Timer timer.Interval = 3000 AddHandler timer.Tick, AddressOf Me .timer_Tick timer.Start() End Sub Private Sub vScroll_MouseLeave( ByVal sender As Object , ByVal e As EventArgs) timer.Start() End Sub Private Sub timer_Tick( ByVal sender As Object , ByVal e As EventArgs) Me .dataGridView1.DataSource = Nothing Me .dataGridView1.DataSource = dt End Sub Private Sub vScroll_Scroll( ByVal sender As Object , ByVal e As ScrollEventArgs) timer.Stop() End Sub End Class Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Parent, child forms check if open or closed Hi all, I'm new to c# and currently working on a project containing mdi forms. This is how the project is layed out. Parent form is called Street_Index. This contians a menu strip which can open 2 different forms. * Street_Search * Office_Search Within the Street_search form there is a button that i click that returns the results in another form called Search_Results. Search Results contains a grid and on double clicking the column of the grid it returns the results of that row back to Street_Search form which displays them in textboxes, grid, combobox, etc.. Within the Office_Search form there is also a button that opens the Search_Results form and then from there you can double click on the grid within Search_Results and open up Street_Search form which will display the results as previous. Now onto the question. What is the cleanest possible way to check to see if a childform is open or not and if it is refresh it or bring it into focus Thanks in advance Take care all. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Suddenly I'm getting this error: The form referred to itself during construction from a default instance Thanks, I realised it was because I was declaring a new dataview in another form as a global object in that form, which referred to frmData. If I declare the dataview but leave it until the form's load event to supply its table, rowfilter etc the problem doesn't occur. Thanks again for your help Louise Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - datagridview - testing values of an unbound column Hi there. I have a datagridview that I populate via a table adapter and everything is working just fine. Now i'd like to give the user the option of: selecting multiple records in the grid by checking a checkbox. this checkbox is available for each row of data and i created it by adding an unbound column. What i'd like to do is enable a button on the same form only if one or more records have been selected by the user. how do i do this I was thinking about using the event: Private Sub DataGridView1_CellContentClick( ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick End Sub but this event can potentially be fired many times and for any column that's selected. Any suggestions Also, what's the easiest way to allow the user to edit the data for a given record I need to do another query when they request an edit because the current datagrid doesn't show all the details for the record. I intend to launch a new window to do this. Please and thanks. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - how to host different controls in the same column in DataGridView control Hi, I am trying to create a datagridview. And in one column i want to have different type of cells (hosting different editing controls). For example, in the same column first cell shall host a combo box control, second cell shall host a text box control, third cell shall host DateTime picker control, another with Colorpicker control, etc. if i follow the host controls in windows forms Datagridview cell and c urrently if i change the cellTemplate property of DataGridViewColumn to calendarcell, then all the cells in that column become calendar cell. But instead i want to have a different control, for example colorpicker, in the next cell ie the one below this. Please advise how to achieve this using datagridview cell. -Madhu. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Removing multiple items in a ListView "at the same time" Hi all, Suppose we have 5 items in the ListView: "Alpha", "Bravo", "Charlie", "Delta" and "Echo". When we execute RemoveAt(0) followed by another RemoveAt(0), the first two items got removed. If we execute RemoveAt(0) followed by RemoveAt(1), "Alpha" and "Charlie" got removed. What I want to achieve is: I can multi-select items in the ListView to decide which items i'd like to delete. For example, I select "Alpha" and "Delta", so the index 0 and 3 are stored in SelectedIndexCollection. Then I enumerate this collection to delete these two in one run. At this time, if I run RemoveAt(0) first, the index of "Delta" will be changed to 2. Can I delete multiple items "at the same time" in the collection without having to mess with the indices Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - How to lock a control on a design form Hi there, I've created a design form at runtime using "System.ComponentModel.Design.DesignSurface" and cousins. I now want to lock individual controls on the form depending on conditions. I know I can do it this way: TypeDescriptor.GetProperties(myControl)["Locked"].SetValue(myControl, true); but this seems irregular. Is there a more mainstream way or is this it. Thanks. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - DataGridView ImageCell Description Hi, I have a dataGridView control on the form and it is not data bound. I have an image cell(whenever required) which is needed to display the image as a thumbnail. I want to display a description next to the image. I have tried using the 'Description' property, but it doesnot seem to work. I don't have an image column. I just create an image cell when needed. Thanks! Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Usefullness of any event Mario, I haven't used the Paint event yet. I take it that it fires multiple times. Do the multiple firings execute you code over and over Do the multiple firings help you or, if it was built differently, i.e, to only fire cleanly only once, would you prefer that Thanks. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - column caption i'm trying to use the column caption but it didn't work. i'm currently using microsoft visual studio .net 2003. i check the online tutorials and did the same, but the caption never turn up at the datagrid. can anyone advise me on this below is my codes. another issue is that, is it possible to change the colour of columns with using tablestyle count = Db.Observation; counter = 1; year = Db.year; mth = Db.mth; DataColumn Quantity; for ( int i=0; i<count; i++) { if (mth > 12) { year++; mth = 1; } Quantity = new DataColumn(year+" / "+mth, typeof ( int )); Quantity.Caption = "Data " + counter; productTable.Columns.Add(Quantity); counter++; mth++; } Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - How do I reference a control's properties? Under the assumption the Button and the TextBox are on the same form: Void Go_Click(System::Object^ sender, System::EventArgs^ e) { System::Form form = (System::Form) ((System::Button) sender)->Parent; System::TextBox textBox = form->textBox1; textBox->Text = "Hello World"; } Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Record Locking and Transactions in Strongly Typed Datasets Hi kia, Yes, change the source code of 'xxxDataSet.Disgner.cs' manually will make it work. Hope this helps. Regards. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - hide and show a process??? You could try making the form completely see through (set opacity to 0%). You could also hide the form(try this.Hide(); and set the ShowInTaskbar property to false. This should make the form 'invisible'. Hope this helps. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - TreeView Comtrol: Add buttons to nodes in TreeView control I am now using TreeView in my web page. I want to add some buttons next to some of the nodes in the treeview. The button should be aware of the value of its corresponding node in the tree. Is there any good way of doing this Thanks! Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - Access Denied Reading Registry Perhaps you have assumed incorrectly: I do not work for Microsoft. Therefore Microsoft has not given you a "crappy explanation". Furthermore, often comments are brief. This is because the person asking the question should do some experimentation, consult documentation, etc. If you have additional questions, they tend to be answered in 2 days or less, but no one is required to do so. As to your original problem, the only operation that an ordinary user can perform on that subkey is read. You cannot write it or delete it unless your code to do so runs as administrator. Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms
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    - How do I Find The Product Code? This is driving me crazy and it must be simple. I am trying to find the product code so I can author manifests for installing MSDE. How do I find product codes for things I want to install I must be missing something easy. Do we just make them up For example here is the product code for SqlExpress ProductCode="Microsoft.Sql.Server.Express.1.0" Tag: Windows Forms Data Controls and Databinding CheckedListBox DataSource property Windows Forms

Gil Strauss

Hello

As mentioned in the documentation, it is not recomanded to used the DataSouce, DisplayMember and ValueMember properties. Does anyone have an idea why

Thanks,

Gil

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Re: Windows Forms Data Controls and Databinding CheckedListBox DataSource property

Ken Tucker

From the CheckedListBox documentation

Note You cannot bind data to a CheckedListBox. Use a ComboBox or a ListBox for this instead. For more information, see How to: Bind a Windows Forms ComboBox or ListBox Control to Data.

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Re: Windows Forms Data Controls and Databinding CheckedListBox DataSource property

Gil Strauss

Thanks for your replay

I've noticed that it does expose the DataSource, Display and Value member and it seems to be working. My question is why it isn't recommended to use these properties.

Thanks,

Gil

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Re: Windows Forms Data Controls and Databinding CheckedListBox DataSource property

Ken Tucker

I dont think you can bind the checkbox part of the checked listbox.

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