.net - Retrieve The Dropdown State Of A DateTimePicker?

May 24, 2012

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.

[Code]...

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Trap Key When DateTimePicker Dropdown?

Apr 14, 2011

Are there any way to trap key when the DateTimePicker is dropdowned?

I have tryed many ways but no effect.

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When DateTimePicker Check State Changed

Jul 2, 2009

When DateTimePicker check state changed,ValueChanged and TextChanged events don't work always.

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Disable Dropdown Calendar Datetimepicker?

Jul 18, 2012

I have a datetimepicker and I want to use it for the time part only! So, I would like to disable its dropdown calendar..

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Dropdown - Programmable Drop Down The DateTimePicker

Apr 8, 2011

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.

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Trap Checked / Unchecked State Of A Datetimepicker Through An Event?

Mar 14, 2009

In Vb.net 2005 how can i trap the checked/unchecked state of a datetimepicker through an event. I'm trying to execute two different methods based on the checked/unchecked state of a datetimepicker when the user clicks the datetimepicker. When the user checks the dtPicker Method A is executed, when the user unchecks it Method B is executed. How can i trap it.

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DateTimePicker ValueChanged Event - Check State Of The Checkbox

Mar 31, 2010

It looks like there is a bug in the DateTimePicker control, because I don't find any event specific for the changing the check state of the checkbox, only the ValueChanged event seems available. So that event should trigger every time the date in a dtp is changed manualy, or by choosing a date from the calender or when the checkbox in the dtp is checked or unchecked by clicking on it, the event ValueChanged should be triggered. But it doesn't do that all the time.

[Code]...

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Forms :: Trap The Checked/unchecked State Of A Datetimepicker Through An Event?

Mar 14, 2009

How can i trap the checked/unchecked state of a datetimepicker through an event. I'm trying to execute two different methods based on the checked/unchecked state of a datetimepicker when the user clicks the datetimepicker. When the user checks the dtPicker Method A is executed, when the user unchecks it Method B is executed. How can i trap it.

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Make The Value Of The Datetimepicker Change To What Have Clicked Inside The Dropdown Calendar?

Apr 15, 2011

I'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?

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Retrieve Time From MSSQL Database To Datetimepicker?

Apr 15, 2012

I have a datetimepicker but the custom format is set to HH:mm tt so that I can get eg 11:20 AM

this value I have stored in database with the help of Label4.Text = DateTimePicker3.Value.ToShortTimeString.

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Retrieve Selected Value From The Dropdown List In Asp.net And Store It In Session Variable?

May 15, 2010

the dropdown list is showing data from database, but how to retrieve the selected value and store it in a session variable??

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Retrieve The Current Weeks Dates From A DateTimePicker Control?

Jul 5, 2011

I am wanting to retrieve the current weeks dates from a DateTimePicker control.

Eg, if i select Tuesday July 5, 2011, i will return the following dates: Sun July 3 2011 right through to Sat 9 2011

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Make Values In Second Dropdown Depend On The Selection In The First Dropdown

Sep 3, 2009

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.

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Get Key State Function With Out Using DLL?

Nov 3, 2011

I need codes for vb.net Getkeystate Function() without using any DLL.I'm beginner for API Conversion from vb to vb.net.In vb6 they using user32 DLL.In Vb.Net i need to call Getkeystate Function without that "User32.dll" function. can any one post me the codes without using dll?

Is there any way to get key state without using that dll Getkeystate function in vb.net..? if equivalent is any one know means show me that codes.that codes should be work with in .net framework.[code]...

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VS 2010 Get State Of INS-key?

Mar 19, 2011

How do I detect the state of the INS-key on the keyboard? MS somehow forgot to implement it in My.Computer.Keyboard...

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.net - How To Set ASP Checkbox State With Javascript

May 1, 2012

In a VB.net app, I have several checkboxes created with regular ASP controls, i.e.asp:CheckBox ID="cb3" runat="server" Checked="true" />I'm trying to implement a "Select all/none" functionality but I'm having a few problems. The Javascript is not changing the state of the checkboxes in Internet Explorer (v9). I tried debugging with IE's dev tools and the checkboxes are definitely getting their checked property set to true. (Also tried setting to "checked".) Here is the JS:

function setCheckboxes( state )
{
var inputs = document.getElementsByTagName("input");

[code]......

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Asp.net - Finding All Use Of Session State?

Feb 3, 2011

I'm looking for some smart ideas on how to quickly find all usage of session state within an existing asp.net (MVC) application.

The application in question was the subject of outsourced development, and has been running fine in production. But we recently realised that it's using InProc session state rather than (our preferred route) StateServer.

In a small scale test, we switched it over to StateServer, and all worked fine. However, when we deployed to production, we suddenly experienced a large number of errors. I'm not sure if these errors were caused by this change (they were actually complaining about database level problems), but removing the change allowed the application to function once again (this may have just been because it caused a recycle to occur).

So before I try switching it again, I'd like to perform a thorough audit of all objects being placed in the session (I'd previously taken a quick look at a couple of controllers, and they seemed fine). If I had full control over the code, this is the kind of place where I'd just comment out the class (to compile and find the various ways of reaching the session class), then comment out the accessors, hit compile, and visit each error. But I can't do that with built in .NET framework types.

I decided to try using Reflector. I've analyzed the "Used By" for each of the following:

System.Web.HttpSessionStateBase.set_Item(String, Object) : Void
System.Web.SessionState.HttpSessionState.set_Item(String, Object) : Void
System.Web.SessionState.HttpSessionState.set_Item(Int32, Object) : Void

[Code]....

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Asp.net - View State After Postback VB?

Apr 12, 2011

I have a label's value that is posted back from a previous page and I want to use this label to do a simple calculation in the current page, but when I do the calculation the page (refreshed) the value of this label and automatically deleted the value (Since there would be no value in postback when it refreshed).

Here is the code behind file:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Label2.Text = Request.Form("Hidden1")
End Sub

and here where I want to use the label

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Stotal As String
Stotal = Val(Label2.Text) * 10
Label3.Text = Stotal
End Sub

How can I save the value in the page via view state or any other method?

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C# Vb: When They Say Static Classes Should Not Have State?

Apr 23, 2011

when they say static classes should not have state/side effects does that mean:

static void F(Human h)
{
h.Name = "asd";

[code].....

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Check For Program State And Act Upon That

Aug 15, 2011

Here is, basically, how my application works:

When windows starts, my app starts. Whenever my app is running, it hides the desktop, taskbar, etc... When a button is clicked in my application ("Start program"), then my application will set its visible property at false and another application will start.

Everything seems to work perfect except I need a way for my application to set its visible property back to true, but only once the other application that was started earlier, is closed (no longer running.)

My thought was that I could use a timer to check for the applications state every so many seconds:[code...]

I have 2 concerns with this:

1. A timer checking this every few seconds will invoke unneeded stress on a computer since they are running for sometimes very long periods of time.

2. There is a better way to accomplish this that doesnt rely on a timer.

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Checkedlistbox Inverting It's State

Aug 25, 2011

Why does this not work?

[Code]...

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Checking State Of DNS Server

Dec 6, 2009

My ISP's DNS server goes down all of a sudden sometimes. This is very annoying while surfing the internet. So, I'm trying to make an application which has the following characteristics :
Runs in system tray
Pings the server periodically
Notifies when the server becomes unreachable/active
Now, I know that the existing workarounds are to use OpenDNS or ping <IP Address> -t in command prompt. I don't want to use them... the reason being that the former gives much higher pings than my DNS & for the latter, I'll have to switch windows.

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Creating The Three-state Checkboxes?

Jun 24, 2012

I can create a checkbox array as follows

Code:
For n = 0 To 13
With (chkboxarray(n))
.Tag = n + 1 ' Tag of button
.Width = 35 ' Width of button

[code]....

But when I run the program the checkboxes only display 2 states (they do work as 3 states). what I am missing to display the "Indeterminate" state?

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DataRepeater - Set Checkbox State?

Apr 13, 2010

im trying to figure out how on earth to set a checkbox on a DataRepeater row to true. Nothing ive tried seems to work. Ive searched all over, and all i seem to find is ways to check the state and in ASP.

Text boxes would be:DataRepeater1.CurrentItem.Controls(

"textbox1").Text = textbox2.Text.However, checkboxes wont work in this way. DataRepeater1.CurrentItem.Controls("Checkbox1").Checked = True"Checked is not a member of windows.forms.control" - ive tried various things in order to set it to true/false, but whatever i do doesent work. I expect its going to be something stupidly simple, but its those things that annoy the most IMO!

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Detect Key State Of Num Lock?

Feb 3, 2011

I'm trying to detect the state of num lock but haven't had any luck. using a windows 7 x64 machine.

Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As System.Windows.Forms.Keys) As Short
'num lock check timer

[Code]....

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Get Checkbox State From Another Form?

Jun 7, 2011

form 1 has a list of checkboxes on itform 2 needs to check if one of the form 1 checkboxes is checked.

texton is a value passed from a function parameter of type string
If (Form1.Controls.Item("checkbox" & texton).checkstate" = True) Then
'Do Something

[code]......

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Get Compressed State Of A File?

Jul 27, 2011

How do I get the Compressed state of a file[code]...

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Get DataGridView CheckBoxCell State

Dec 24, 2009

I add one checkboxcolumn in design time in the page load I set the value false like this
DataGridView1.Rows(0).Cells(0).Value =
False

Then in the CellContentClick Event I get the current value of Checkboxcell then change the state of the checkboxcell according the value like this
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
If e.ColumnIndex = 0 AndAlso e.RowIndex > -1 Then
Dim ched As Boolean = DataGridView1.Rows(e.RowIndex).Cells(e.ColumnIndex).Value
[Code] .....

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Get Dialup Connection State In 3.5?

Jun 27, 2009

How to get dialup connection state in VB.NET 3.5?

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Get The Current State Of Num Lock?

Sep 2, 2009

How do I get the current state of Num Lock in VB.NET?

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