I am looking for a contol either listbox or listview to support my requirements.
Basically how my application looks is:
alt text http://img51.imageshack.us/img51/451/39967846.png
The background should be black
when the user clicks any 'row' the
row should get highlighted witgh
grey.
The user will have the ability to
search items in this control.
For example , if one of the row
displays 'This is the second Item in
this car'
If the user searches for Car, that corresponding row(s)
should get
highlighted with pink.
The user should be able to search an item in this contol and specify a number to display the lines below the searched row.
For example, if the user Searched for 'car' 5, the rows that have car should get highlighted and their immediate 5 rows.
I mean
Search Result :
car row
next row 1
next row 2
next row 3
next row 4
next row 5
car row
next row 1
next row 2
next row 3
next row 4
next row 5
The user
should be able to drag and drop the
files and they should get opened in
this 'control' i.e each row should
display a new line till the EOF.
The user
will have the ability to right click
on the row, context menu pops up
displaying that row item.
The contol
should be able to display specific
text items in a row(s) with
different color.
Having said these things. I used to program in VC++6, VB6. But using those version now seems not realistic now as I lost touch. But if I have to use the latest 2008 versions, for which I do not have any experience seems scary.
So, If you are reading this , and you have got some experience in these fields or using controls that support my requirement, can you please let me know which programming language or IDE and Control should I use to develop this application.
PS: the image is made using mspaint and does not represent actual program.
As for language I would suggest either C# or VB.Net. They are both great languages and there is tons of support on the Internet for them. Just pick the one you are most comfortable with. As for a control that does what you are asking,
As for the control, it really depends on what platform you target. I have very little experience with WPF so can't help you with that. However, if you want to use WinForms, I would suggest the ListView control. It provides a lot of flexibility in terms of how you can use it. You will need to write the code to identify the rows and highlight them, but that shouldn't be too difficult once you understand how the ListView works.
Here are a couple tips if you do use ListView:
Set ListView.View to Details (this provides you with a grid-like control)
Set ListView.HideSelection to false
Set ListView.FullRowSelect to true
Set ListView.BackColor to Black
Set ListView.ForeColor to White
You can hide the column headers by setting ListView.HeaderStyle to None
If you want to support selecting multiple rows, you can set ListView.MultiSelect to true
To highlight row, set the ListViewItem.BackColor and ForeColor
The big let down of this control is that you don't have much control over the color of selected rows. There are techniques out there to control this, but it's not a simple property set. If you are interested, I think this question/answer might help.
Related
I'm working on a DB where the users have to select items from multiple list boxes, at the end of the all of this, the form closes and opens a new form. All of that works great.
My issue is that when the user goes back to the original form, I want it to load in with their list box items already highlighted. Sort of a "here is where you left off" kind of thing.
I have code that works, but it's somewhat limited:
If InStr(me.Backup_Chain, "Apple") > 0 then
Me.List_Type.Selected(0) = true
End if
If InStr(me.Backup_Chain, "Grapes") > 0 then
Me.List_Type.Selected(1) = true
End if
"List_Type" is just a textbox that I populate with the users previous selection. So if they selected Apples and Grapes it reads: 'Apples','Grapes'
This works pretty well, but it's not dynamic. So if I add "Bananas" to the list, Bananas because item number 1 in the list, and thus screws up all of my other references.
So, my question is 2 parts:
Is there an easier way or reselecting the list box items?
If not, is there a way to make the Selected(#) dynamic? i.e. to tell that "Grapes" is in location 1 vs 2.
Thanks everyone!
Edit: In addition to this, I have a run a query to filter one of the list boxes down to a subgroup of clients (based on the other list box selections). Which means I need to refresh the page. So I can't get by with just hiding the form.
VB.Net 4.6.1
Windows Forms application
I have a bound datagridview that I'm trying to sort and select. The data loads fine and I can click the headers (with some code) and the sorting works well. I'm working on reselecting a record after the sort is complete and I'm running into some trouble.
Assume that I have a datagridview with 20 records in it. On the form I also have a button that runs the following:
MessageBox.Show(MyDataGridView.CurrentRow.Index.ToString)
I also have a Sub that handles MyDataGridView.Sorted and in it I have one test line as follows:
MyDataGridView.Rows(2).Selected = True
After the data loads I click on the 11th record (selectionmode fullrowselect) and then I click the button. Box pops up and says "10" (0 based index). I click one of my column headers, the data sorts and the highlight bar jumps up to the 3rd record (index 2). However when I hit my currentrow.index button it still says 10. Additionally if I hit the down arrow key the selection bar jumps down to the 11th (index 10) record in the list.
It seems that using "Selected" doesn't update the currentrow.index value and since it is read-only I can't force it. Can anyone educate me on what's going on because, as it is, my users would be confused if the arrow up and down keys didn't work properly after a sort.
Thank you!
"Current" and "selected" do not mean the same thing. How could they, when multiple rows can be selected but there can only be one current row? The current row is the row that currently contains the caret and a selected row is one that is highlighted. If you want the row at index 2 to be the current row then you need to make a cell in that row the current cell, i.e. assign a cell in that row to the CurrentCell property.
I have an unbound textbox to accept the delete older than: number of days. It is in the report header. I set it to 30 days but I want the user to be able to change it. I was banging my head trying to figure out why entering 40 was not being accepted and it reverted back to 30 every time. I finally decided on using the lost_focus event to set .value to .text. That worked.
Further research showed that when the textbox get's focus text and value are both the same, 30 in my case. Changing the number in the text box to 40 shows the values of text at 40 and value at 30. Unless I specifically set Value to the value of text Access changes text to the value of value. This is different behavior than other places in Access such as forms.
Can anyone tell me why this might be? I can't find any setting that might do this. Is it because it's in a report header? what is the difference between this and every other text box I've ever used?
From a "best practices" viewpoint, Access Reports are not intended to be used interactively despite the ability to manipulate some unbound controls. Although workarounds can be implemented that function sufficiently well, such solutions are often incomplete and buggy and function differently depending on the active view: Report View vs. Print Preview. Appropriate design patterns include using Access Forms for specifying report options which then open the Report in a static configuration.
This may not satisfy the question "Why?" if seeking a deeper answer as to why Microsoft implemented inconsistent binding behavior in Access, or why they allowed interactive controls in reports at all if they don't behave the same way as in forms. But Access has plenty of other quirky behaviors that have no known/published explanation.
Regarding the priority of the Value property updating the Text property (and not vice versa): Value is the key field because it contains the actual data for the control (bound or unbound). Although it is natural to have a single control for both display and input (uh, that's how almost all controls work), the processes of displaying data and parsing user input are two distinct functions. The visual representation returned by the Text property can be manipulated using the various formatting properties, and technically could display an incomplete representation of the underlying Value data. If there are any conflicts between the stored Value property and the Text property, it is natural that the existing Value property has precedent.
My guess is that the automatic binding behavior was "relaxed" for reports to allow more flexible custom reporting output. First consider an Access Form in Datasheet view: An unbound Form control shows the same value for all records. Even if the control is edited while on a particular row, the updated value is displayed for all rows. The same control object is essentially repainted for each row and there is no concept of individual instances of the control that can hold different values. Bound controls have built-in code that repaint the control with data from the particular row, but there are still not multiple instances each "holding" the individual values. The visual output differs from an intuitive object-oriented paradigm where our minds what to assign each visual row its own in-memory instance of the controls--it just doesn't work like that in Access.
Unlike the Form behavior just described, the Report's Print Preview (and actual printed output) allows unbound controls to display different data per row using the Detail_Format() event. Within the Detail_Format() event, one can set the Value property of a control at which time the Text property is automatically updated according to various formatting properties. This update Text is then output for the current row. Perhaps (just guessing) that this behavior would not function properly if the Text property updated the value property. I suspect it would cause recursive events during report generation. Because reports are not meant to be interactive, relevant text-input parsing code was "disconnected" so that it doesn't behave like on a form.
All that explanation doesn't make Access any less frustrating nor remove its limitations, but at least learn to adapt and design things in the "Access-esque" way rather than fighting it.
your best bet is to design a form with the unbound combo boxes and have your data displayed in a subreport. I like to design my reports so that when values are updated the query for the recordsource of the report is generated doing this requires 2 queries to exist, one with all data possible and a filtered one as subreport recordsource. This will control the data for printing and also allow users to close or navigate away from the report and return to the data later.
Private Sub ComboBox1_AfterUpdate()
Dim Query1 as Object
Dim Temp_Name as Variant
Temp_Name = SubReport.SourceObject
SubReport.SourceObject = Empty
Set Query1 = Me.Form.Application.DBEngine.Workspaces(0).Databases(0).QueryDefs ("SubReport_Query")
Query1.SQL = "Select * Unfiltered_Query WHERE Field1 <= " ComboBox1 & ";"
SubReport.SourceObject = Temp_Name
End Sub
I ' ve a combobox with too long multiple Items . There is any method to set a horizontal scroll in combobox or set a multiline properties for each item ?
Hi Mattia,
There are a couple of methods that are usable as well as effective for this problem you are having, here is the concept that I've created that you may implement in your project;
Original text: C:\path1\path2\path3\path4\file.exe
Combo Box text: C:\path1\p...file.txt
To do this you will 1st have to specify how many characters you want to shown in the start of the text (1st 5 or so) then you must specify how much you would like to leave off at the end (last 6 or so).
I realize this causes a problem, "I wont be able to see the full path!", however adding a 2nd form or a msgbox to display the full text which should initiate the 1st 2-4 secs of display time, this should not be a challenge nor a problem and will make you look like a Pro!
I hope this helped you with your problem or motivated you to go over and beyond!
i have a listbox that contains the words "week1", "week2", ..... all the way up to "week52" and when i select a week from the listbox it will retrieve a value from a mysql database that will represent a progress bar value. my progress bar has a range of 0-120 and i would like to have all the weeks that have values higher than 100 to be highlighted or marked somehow, in the listbox. so my question is, "is there a way to set the background color of certain weeks in the listbox to orange based on the value that they represent on the database?
for example for "week1", the value is 114, so when the listbox loads, i want the background color of the item "week1" in the list to be orange (indicating that it's current value is higher than 100)? i know that this requires me to implement a user defined drawing function for the listbox items but i dont know where i would even start. i would like this to be somewhat automatic so that it checks the values and changes the background colors of any value higher than 100, instead of me specifying a name of the item.
Thanks in advance!
I don't believe you can do this with a Listbox (at least not without creating your own implementation/subclassing/overriding/whatever of a Listbox).
Pretty sure you could do it with a ListView (in Detail mode), though, if that helps.