i have this code here:
Call SendMessage(dtPicker.Handle, CB_SHOWDROPDOWN, True, 0&)
That works fine on comboboxes but doesn't seem to work when it comes to the DateTimePicker box.
Are there any way to trap key when the DateTimePicker is dropdowned?
I have tryed many ways but no effect.
I'm needing to determine if the calendar dropdown is currently being shown in a WinForms DateTimePicker. I've got a custom control that inherits from DateTimePicker, and I'm handling the KeyDown event in order to do stuff with navigation keys, but I'd like to bypass that code if the calendar dropdown is open, so that the user can use their navigation keys there.
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I have a datetimepicker and I want to use it for the time part only! So, I would like to disable its dropdown calendar..
View 3 RepliesI've got a datetimepicker control on a vb .net 2008 form. I have set it to show a custom format of "dd/MM/yyyy". The problem is this: - when i click on the arrow button, a small calendar is shown in which i should be able to select a date. The only way i can do that is by using the arrow keys and pressing Enter. Clicking on any date value inside this calendar doesn't do anything.How can i make the value of the datetimepicker change to what i have clicked inside the dropdown calendar?
View 11 RepliesIs there any way to do it with a standard toolstrip or I should write my own usercontrol for that?Basically, I need a drop-down button with another toolstip as a dropdown.
View 4 Replieswell the title kind of explains it, what i would like to do is code a program or script that will make it so that when i plug a usb keyboard in that instead windows making it a clone of my laptop keyboard that it makes it a totally seperate device with 108 programmable keys that i can turn into scripts...now dont know if this is possible and if it is i am totally drawing a blank of where to start...once i get going i think i could handle it but its the starting point thats killing me.
View 2 RepliesI need to have a physical button that when pressed will be noticed by my program.There are many types of usb-buttons that are preprogrammed to open a website, shutdown the computer and so on. And I have seen some projects using buttons and serial port.But none of them "have it all", an easy description of how to put togheter the hardware, and an easy description of the code.
I really only need a button connected to the serial port that send some signal that the button has been pressed.I know this question is a crossover between software and hardware, but when I googled this I have seen plenty more people asking this question, all of them left without answers.Maybe this question fits stackoverflow?
EDIT: My solution
My application in this case was a que system and I wanted a button for people to print a que ticket.I just took apart an old ps2-mouse and bought me a button (4$) and solded two wires from the circuit board to the button. Each mouse button has to dots on the back of the circuit board that we can connect an external button to.Then in my program I just hooked the mousebutton-event systemwide to get when the button is pressed, in my case this computer is dedicated to this program so its not a problem.
I have a list of servers in the first dropdown. I want to get list of all databases in the second dropdown depending on the server selected in the first dropdown.
For this I need to query each server while selecting the server.
Is it possible to reorder the elements of a drop down list (combobox) via drag and drop?For example, when the list is dropped down, I want the user to be able to drag the items up or down to reorder them. I tried this (and some google searching) but I'm wondering if its just not possible:
Private Sub cmbClassLists_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles cmbClassLists.MouseDown
If cmbClassLists.DroppedDown And Not cmbClassLists.SelectedIndex = -1 Then
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ComboBox drop up instead of drop down..i want to defualt for a particular drop down box to work this way how can i do it.
View 6 RepliesI am currently working on a drag and drop project and I was wondering if there is a way to drag picturebox1 and drop it in picturebox2; that will snap to a specific location in the picturebox2?
View 2 RepliesListView Drag&Drop allow to Drag&Drop between form??
Public Class frmModule
Private Sub ListView1_ItemDrag(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ItemDragEventArgs) Handles ListView1.ItemDrag[code]....
Can it be drap and drop item to other form control??How to write the event when mouse up at the other form control?
I am trying to figure out a way to include the listview's tag field when dragging one listview's subitems into another listview. I am hoping someone here has experience with this. My Listview drag code is below - the two listviews that I am dragging subitems into or from are LV1 and LV3. Also, this is being done in Visual Basic 2008 and the project is a windows application.
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So I made my form transparent by changing the transparent key to dimgray, change background color to dimgray. I also changed the picture box's BG color to dimgray everything was fine except that the drop shadow on the picture I did was just a grey blob.Is there anyway to make the drop shadow look like its a drop shadow?
View 5 RepliesDoes anyone know if it is possible to make a drop down list control (when clicked) list its contents above the item, rather than below? Effectively, I need a drop up list rather than a drop down list...
View 1 RepliesI want to fill a dropdown in the pageload by using a BLL and DAL class. This is the code
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
dropBrand.DataSource = BLLManufacturer.selectManufacturers()
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The first dropdown fills up with brands as it is supposed to do, but the second does not. The second dropdown needs to show car models by the chosen brand in the first dropdown. However the dropBrand.SelectedValue always returns 0 whatever brand I select. Without the convert toint16 it doesnt work either nor with convert toint32 or toint64.
I am limited for space on my form. Is there a way that I can have a textbox act like a dropdown? So the form will show as one line. If the user starts typing multiple lines then it opens the drop down so they can see what they have typed. Will it have all of the same goods as a textbox, like copy and past? When they are not typing then it will be closed and only showing the first line.
View 3 RepliesI have been to internet hail and back trying to figure out what Im doing wrong with my combobox cells and columns.When I add items to the cell using .item.add("something"), othing shows in the cell. I can add 5 items and nothing shows up. No dropdown and nothing in the cell. In debug, I can stop and look at the cells value and see that n-items where indeed added but yet, they dont show up on the screen in the DGV.I have a DGV and I have tried this 2 ways.. creating the columns in the form designer and by adding the columns in code.Heres a snippit of the datagridviewcomboboxcolumn (thats a lot of typing) anyway.. this is the def for it and the surrounding columns:
Dim conx_text_col As New DataGridViewTextBoxColumn
conx_text_col.DefaultCellStyle.BackColor = Color.Teal
conx_text_col.DefaultCellStyle.ForeColor = Color.White
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I have created a sub that I am using over and over again. However, I am not able to get the values from the database. Screen shots and code attached. I need a second pair of eyes, can't seem to figure out what is wrong.
Form Load
vb
'Populate the drop down lists
PopulateDropDownListFromDB(cboReferrerType, "ReferrerType", "ReferrerName")
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I have a large VB/SQL application that I have created a problem in. I have a table of procedures that have an active flag on them. This flag can be toggled through a user screen. Other screens access this same table to populate dropdowns. The values are stored in the table as the ID field (PK). The problem I have is that I am selecting the dropdown values based on the Active flag. If I select a record that has a procedure stored in it that has been made inactive, I get the old Object Not Set to an Instance.... error.
What I want to be able to do is check for the value in the record when populating the dropdown and allow the record to be displayed by bypassing the SQL error and just showing the dropdown value as blank while not altering the record itself. I hope I'm making sense. Code is below.but I'm back in app programming after being a SysAdmin for 20 years and I'm still rusty.[code...]
How can i make a dropdown list with checkboxes ? I have a windows app ( vb.net) and the checkboxlist control is not real an option with the available space on my form.
View 5 RepliesUrgh, I have spent the last couple of hours on this now. I normally end up finding the answer from a bit of Googling, but not with this one. Bit of a headache.
My questions:How can I catch when a user clicks the dropdown arrow on a combobox and prevent the dropdown list from being displayed.How can I then clear and populate the dropdown list and display it programmatically?
I have one agent program remotely connected to a server over the internet. When you click the dropdown arrow on the agent, it queries the server to determine what needs to be in the dropdown list. It then displays the dropdown list. The comboboxes act as filters for the subsequent comboboxes on the GUI. A delay in displaying the dropdown list is perfectly acceptable while retrieving the data. Initially querying all the possibly entries in the dropdown list is not an option because there are so many! Needs to be comboboxes compared to listboxes as the user may also type an entry that is not in the list.
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VB.Net / Winform.Is there a component that will look like a Button but when pressed will open like DropDown, but the DropDown wil contains a list of Buttons? Menu bar won't work for me in this case.
View 1 RepliesHow can I add a data to my drop down list came from database? My code is this. And when I try using this:
<form id="form1" runat="server">
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
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It got errors in a webpage that says controls are not allowed to be put here. I only have an empty dropdown right now.
<asp:DropDownList ID="DdLocation" runat="server"></asp:DropDownList>
Is there a way to add to the "Show Output From" dropdown list. I've been going in circles on MSDN looking at Listeners, Writers, Trace, Debug, ConsoleTraceListeners etc. with no luck. I really would like my own pane for debug output because I don't want to disable any of the messages in the debug pane, and a lot of stuff gets pumped out there.
I found a way to add a new pane to the output tab through a macro/addin but don't know how, or if, it can be written to through code.
Short of that I'm really just looking for a better/more intuitive way do display debug output. Colored would be nice. I've tried very unsuccessfully to use nLog - but the configuration/documentation left me scratching my head.
Is the output window really what most people settle for?
in an sql table there's an id, first name and last name field. i'd like to concatenate the first and the last name fields and display it as one in a dropdown control.
this is the vb.net code:
con()
sqry = "[SELECT QUERY]"
sqcom = New SqlCommand(sqry, sqcon)
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^this code displays only the first name. how do i go about concatenating in asp.net?
I have a web form in which i have droped 6 dropdownlists and each dropdownlist have previous seven dates to open files from a specific folder concatenated with date at the end of file name.Problem is that when i select first dropdown list it opens file fine but when i select a date from anyother dropdownlist to open file then it open the same file which was opened from the first dropdownlist.Please see the code and make correction in it.
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I'm trying to make a user control similar to the Windows Vista/7 breadcrumb bar used in windows explorer. However, when I show the drop down menu for a breadcrumb with many sub items, I get a very long list that sometimes exceeds the screen size. In the Windows Vista/7 example however, there are a maximum of 18 items displayed at a time and a scrollbar appears at the right when the number of sub items exceeds this number (18).
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So in winforms, every dropdown combobox has this little arrow thingy to the right that tells the user it's a dropdown, kinda like this:Now how do I figure out how wide that is in pixels? Reason is, I'm using ControlDrawToBitmap, this doesn't draw the text properly for the combo boxes, and I can redraw the contents, I just whack some of the arrows (which are drawn properly).
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