Wpf - Load Dropdown Lists From Reference/lookup Tables For A Desktop Application?
Aug 15, 2011
what is the best way to load dropdown lists from reference/lookup tables for a desktop application? the application is layed out into 3 tiers. I've built up my entities.the front end has a form with 6 tabs. and one big save (another discussion :)Should I load them all when the form is initially loaded? Are there any caching mechanisms I could use?
it is vb.net app on a network drive that is accessed by several users.it's also worth noting that some reference tables may be updated. Via another form.
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May 17, 2011
i am using a third party tool "lookupedit control" which is similar to a combobox. as we type in the address bar of our browser we get the related items in the dropdown of the address bar. eg: if e type go we get all the items starting from go in the drop down of the address bar. I want to implement the same functionality for lookupedit or a combobox.
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Nov 9, 2010
Is there any built in control to show HTML data in desktop applications?
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Jul 17, 2009
I've been trying to use lookup tables to display names instead of ID's in a DataGridView using a DataGridComboBoxColumn and have even copied the example shown in the Forms over Data videos produced by Microsoft but still get the following error message:System. =Argument Exception:DataGridView ComboBoxCell value is not valid..Everything was done in the designer and the problem only occurs with the DataGridView; lookups work fine using a combo box when displaying single records.Also the error message only pops up when I close the form. Prior to that all the names are displayed correctly for each record, the drop down list shows the names correctly and I can edit, add and delete rows and save all my edits with no problems. Its just when I close the form that the problem occurs.Each time I press OK in the message box the names in the combo boxes are removed, one by one.
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Aug 16, 2011
One of my clients wants a set up multiple dropdown lists as a set of outbound links (yes, I cringed too, but he does have his reasons. there are 3 dropdowns, each one pertaining to its own group of links. When each dropdown has its SelectedIndexChanged, it then redirects based on the choice made. However, lets say I make a choice in the second dropdown. It goes to the proper link. If I then choose a link in the first dropdown, it goes to the proper link. Then if I select a link in the third dropdown, it will go to the link specified in the choice I made in the FIRST dropdown.
How can I code it so that it will always select the most recent selection?
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Oct 8, 2009
I have a label with a tooltip attribute for rollover effect. This works all great. However, it seems to get hidden behind any dropdown lists that are nearby. I have tried adjusting the z-index, without any luck. This issue does not appear in firefox, and I have not tested it in later versions of IE.
I realize this is probably due to IE6s poor css standards-compatibility, but how can I get around this?
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Jul 17, 2009
I've been trying to use lookup tables to display names instead of ID's in a DataGridView using a DataGridComboBoxColumn and have even copied the example shown in the Forms over Data videos produced by Microsoft but still get the following error message:
[Code]...
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Apr 7, 2010
I have to write an application that consists of mainly one main form, but several different things I wanna display. Pretty standard I guess. So there is a menu, some controls, and the main stuff below (ranging form graphs, tables, dropdown boxes, print preview, etc). I would like to use it like one would use frames in html, design an object that is limited to a box or panel that I define. The literature I have does not give me a clear idea of how to do this (yet). The most obvious seem to be the use of MDI, open a predefined form with no borders, maximize it before showing and remove all minimize/maximize options. But that does not work so well. The form inside the MDI parent does not fit the size that is given for it when it is loaded. e.g.
[CODE]:......................
So my main question is: Is MDI the way to go here at all or are there better/easyer ways to achieve this? If MDI is the way to go, how do I sucessfully restrict a child form inside another object, without giving the user any opportunity to resize (i noticed that I have minnimize/maximize/close buttons, even if I disable them on the child forms themselves)
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Jul 16, 2010
I have multiple combox boxes,
A B C
Combobox B has items Fruit, Veg, Dairy
Combobox C needs to contain 3 list and depending on what value is selected in Combo Box B.
For example,
If I select Veg in Combo Box B, I would like to have a drop down list containing "tomatoes, lettuce, onion,..........."
If I select Dairy in Combo Box B, I would like to have a drop down list containing "Milk, Cheese...................."
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Jun 27, 2011
Basically what I'm having to do is create a program that takes a list of CaseIDs and compares them to a table on a remote SQL server. However, the table holding the CaseIDs on the remote server has nearly 120,000 records.
Currently my plan is to query all records on the remote server, save the query and the current list to tables in an Access DB file and then run an outer join to see which CaseIDs have no matching records on the remote server.
I believe this will be a much slower process than I would like. If I could load both queries into arrays or lists in VB and then compare them (therefore, not having to write 120,000 records to a DB file), it would be much faster.
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Apr 14, 2012
For my first post I've got a tricky question. I'm past walking through tutorials but not far enough to join the Open Source Community.this Question I'm trying to create a program that tracks combinations used in Alchemy Games (Generally on a mobile phone etc)I've got the following classes
Class Game contains properties for Elements and Combinations
Class Elements Inherits List(Of Element)
Class Combinations Inherits List(Of Combination)
Class Element
Class Combination
Combination contains Element 1 and Element 2 and List(Of Element) for the results My Question: Using Game.Elements how can I add a readonly property for combinations of that element.
[Code]...
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Jun 11, 2012
We have a Windows Forms VB.NET application running on Windows Server 2008. Users access this app using Remote desktop.The app displays information in Excel, but Excel opens on the server.Is there a way for the .NET app to launch Excel on the users local desktop?
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Sep 19, 2011
I want to create a website where it is possible to add dynamically "X" dropdown-lists (or other elements)These dropdown-lists should be shown on the website and furthermore there should be an other element be shown, that depends on the dropdown-list (for example: if the user chooses option "A" there is a checkbox, if the user chooses "B" there is a input field)
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May 25, 2009
I want to have a drop down menu with the values:
Year 7
Year 8
Year 9
And I want to display different tables for each the values selected in the drop down menu. For example, when the "Year 7" value is selected in the drop down menu, a table is displayed for that year.
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May 10, 2012
We are presently developing an application, let's call it APP1, which uses a SQL Database which have about 800 stored procedures, 600 tables, etc. APP1 was originally created in order to replace another application, APP0, from which we do not have source code but only SQL tables, Stored Procedures, views, etc. Previous programers of APP1 used some DB objects from this same database and added some other objects specific to APP1 because it becomes bigger than APP0. And we do not need APP0 anymore as APP1 does all what we want, and more.
So, now, we are thinking about a way to find out which objects are used by APP1 in order to remove objects which are ONLY used by APP0.What is the best approach to discover all objects used by APP1 without having to open every single class and form?
Once we will have a complete list of these objects, it will be easy to use a program we bought which detects all dependencies for all SQL Objects specified directly from SQL and remove objects which do not return from any dependencies. Any ideas of how I could get this list without having to go through all our program that have many, many, many classes and forms?
Note : I know, in a perfect world, all calls to PSs and tables should be in a DAL but in the case of the application we're presently working on ... this is not our case! Yippy! (sarcastic yippy) ;)
Note 2 : This application is not using any ORM. So all queries are directly using SqlCommand. So any call to any DB objects are in string format.
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Jul 5, 2010
I'd like to save a file on the desk top.Like this the code below except I need to store it on the desk top.How do I reference the desktop?
Dim
objStreamWriter
As
StreamWriter[code]......
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Dec 29, 2011
When .Clear() is invoked, is the memory freed up that was allocated when all of the items were added? I need to load several lists of codes from a database depending on the import selected by the user. Each list of codes will be a List(Of String). My idea is that I will load only small strings into a List(Of String) along with a List(Of <class>) for the data I will be validating and manipulating. When I am done, I want all of the data from the Lists to be purged from memory. Will .Clear() take care of that or does the memory still remain allocated and have to be dumped by the OS once memory gets full? (And, incidentally, what causes the OS to decide which memory blocks to dump? FIFO concept?)
There are so many lists, I'm not sure if I just want them sitting in memory or not. Granted, the lists will just consist of a single string value for each code pulled from the database. So there won't be a ton of data, so maybe I could just load all the validation lists at the beginning of runtime and only worry about purging the data List since it will contain between 35-50 "fields" per record and there will be a couple thousand records each import that is run. I don't want my program to actually cause a hit in performance in the long run. I ultimately don't see a problem because I won't be running millions or even hundreds of thousands of records at once, but I just want to be sure.
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Mar 12, 2012
I am reading data from a mysql database table.I have populated a dropdown with the relevant slections, i want the rest of the form to load data once i select the plate number .[code]...
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Oct 16, 2011
I am struggling with the following - I try to add a value to a list, where the list is defined in a structure.
[Code]...
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Sep 16, 2009
I have an application that I have in VB Express Edition 2008. I have an MS Access database (Access 2003) that I have created a data reference to one of its tables. The table contains 3 fields ID (Counter), Name and Price (text and double). When my form loads I simply want to read each record in the table and create a variable with the same name as the product name and assign it a value the same as the price in the table. So, record 1 in my table has Prod1 in the name field and 2.59 in the price field. I would like these variables to be created when the form loads and be available until the user exits the form.
It seems simple but I cannot find reference to a similar situation anywhere I have looked.
In the Form_Load routine the following line was generated via the designer:
Me.PricerTableAdapter.Fill(Me.PTODataSet.Pricer) assist if possible.
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Oct 28, 2010
I need to load a large txt file that is in a fixed width format. There are over 45K lines, so speed is important.I need to load one of the fields into a dropdown box and have another field (label) display the text of another field in the related line.I could import the file to an access db if needed, but would rather not as i also want the txt file to update from a link on a regular bases. So having it in a DB would be more work to process that part.[code]
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Aug 7, 2009
I added a few items in the combobox dropdown list at the form load event. [code] At the runtime I dont want to allow the user to write something in the combobox as a text.The user can only select an item from the dropdown list of the combobox.
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Aug 13, 2010
1. Can I include a database in an exe file? - I am trying to create a small launcher application which contain 10-20 IP addresses with name, addresses, phone and email for people I help out on a regular basis. I would prefer if I could have the DB containing this info included in my launcher app, so I could carry it around on a USB stick.
2. How do I get mstsc.exe (remote desktop) to launch with an IP address from my DB above?- In my small app I am trying to add a launch button for each person. So if I am helping "person1", then I click the button next to him, and it launches my remote desktop of PC Anywhere to his IP address....
My initial thought was to use an ini file with my exe file, and modify the ini file with data through the app, but I want to be sure that there is no way I can include this information in the exe file.As I want to be able to change the connection information through my app interface I reckon I am forced to use either a SQL DB or some sort of file DB right?
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Jul 18, 2012
Im planning to create a Remote Desktop Application and I'm having problem with viewing other computers monitor or screen.
Im not asking for the code on how to do it. and one more thing is it safe to use winsock in creating a client/server application?
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Aug 29, 2009
This is the code that i did to fetch data from the database and filling it to the combobox dropdown list at the form load event:
[Code]....
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Apr 9, 2011
Let's say 10 desktop shortcuts, all with different names/icons, point to and can start the same exe application from the same directory. Is there any means for the application to know the distinct name of the shortcut that was doubled_clicked. Also is there any means for a running application to know if it was started by command line, by a double_click on the exe, by a double_click on a shortcut that points to it, or by another process' call?
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Oct 21, 2010
I am trying to use Setup project. Want my setup to create a desktop shortcut with my application.I donot understand how to do it. Clicked on User's desktop, I created Shortcut to User's desktop, changed the properties Target and Working Folder as 'Application Folder'But it does not connect with MyApplication.exe When I ran the setup and tested Desktop short cut, it took me to the folder where application was installed, instead of running the application.How to make the application run using this shortcut?
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Nov 22, 2010
I have a game that will open four windows on the desktop using VBE2008.How do I control the starting location where on the desktop those four windows will appear when I Load (Open) the Window?
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Oct 30, 2010
I am making use of an ASP.NET Masterpage. I have 3 tables as Columns in my Masterpage. The first table load then the second table that contains my "ContentPlaceHolder" and then table 3. How or what must I do to load table 1 and then table 3 and then lastly the table 2 that contains the "ContentPlaceHolder"?
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Feb 19, 2012
For some unkown reason, my database tables will not drag and load onto a vb form, just get a circle with a slash in the middle. Trying to tanslate the table into textbox's.
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