How to show calendar on datetimepicker using button?

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how to show calendar on datetimepicker when click button ?

What I have tried:

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Posted 11-Sep-17 10:06am

Khabibb Mubarakk

Updated 12-Sep-17 6:25am

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Graeme_Grant 11-Sep-17 19:05pm

You should learn how to use Google Search rather than always get us to write your code for you: vb how to show calendar on datetimepicker using button?[^]

Khabibb Mubarakk 12-Sep-17 6:33am

I didn't find control,,it cause i post here

Graeme_Grant 12-Sep-17 6:42am

Both Karthik Bangalore and I have given you links with valid solutions. Now it is up to you.

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Karthik_Mahalingam · Answer 1 · 2017-09-11T17:34:00

Solution 1

check this winforms - Open DateTimePicker C# control programatically - Stack Overflow[^] the answer is posted in c# however you shall use any one of the online code converter to convert from c# to vb

Posted 11-Sep-17 17:34pm

Karthik_Mahalingam

Comments

Khabibb Mubarakk 12-Sep-17 7:16am

i got error message

 Unable to find an entry point named 'PostMessage' in DLL 'user32.dll'.

this the code

'part of the usings
Imports System.Runtime.InteropServices

    
    'declares
    Private Declare Function PostMessage Lib "user32.dll" (ByVal hWnd As IntPtr, ByVal msg As Int32, ByVal wParam As Int32, ByVal lParam As Int32) As Boolean
    
    Private Const WM_LBUTTONDOWN As Int32 = 513
    
    'method to call dropdown
    Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) handles button1.click
        Dim x As Int32 = (dateTimePicker1.Width - 10)
        Dim y As Int32 = (dateTimePicker1.Height / 2)
        Dim lParam As Int32 = (x + (y * 65536))
        PostMessage(dateTimePicker1.Handle, WM_LBUTTONDOWN, 1, lParam)
    End Sub

Karthik_Mahalingam 12-Sep-17 9:21am

check this
https://stackoverflow.com/a/12885084/1147428
https://stackoverflow.com/a/39293384/1147428