Override The Datetimepicker Object To Remove The Texte When The Property _clearOnDisabled Is True?
Oct 12, 2011
I would like to overrides the datetimepicker object to remove the texte when the property _clearOnDisabled is true. When _readOnly property is true, I would like to show the text in black not gray. So I tried with WndProc but I seem that every single object go through my function not only my datetimepicker. I get 100% CPU when I put the WM_PAINT message. I also tried to overrides the OnPaint but its not getting in.
Imports System.Drawing
Imports System.Windows.Forms
Imports DTP.WindowsMessages
[code]...
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Mar 5, 2009
How to override the SelectedItem property? When you look at the description of the SelectedItem property, the description shows as:"Gets the selected item with the lowest index in the list control". I would like to bypass the "lowest index" portion of the property...I have multiple items in the same list with the same value, but different text. I just want to set the SelectedItem to the actual item I've selected, not one with the same value that appears earlier in the list...
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Nov 20, 2009
In my project, I have a table that has an image column, but with vs2008 it stores the image as bytes. I have the column set to allow nulls. When I save my image I convert it to a byte array. Then when I retrieve that row, I convert the byte array back to the image, no problems. The problem is when there is not an image selected I return Nothing to the datatable, saves ok, but when I try to retrieve that row, The dataset.desinger throw the "value in column dbnull". I can temporary override this error with a code change in the dataset.designer, but it does not stay permanently. How can I override the dataset.desinger property permanently.
Original dataset.desinger code:
<Global.System.Diagnostics.DebuggerNonUserCodeAttribute()> _
Public Property Image() As Byte()
Get
Try
Return CType(Me(Me.tableCustomers.ImageColumn),Byte())
[Code] .....
All I did is add the if statement capturing the dbnull and forcing it to return Nothing instead. When I close VisualStudio, then reopen this change is gone. How can I keep this or override it.
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May 25, 2011
It is possible to override textbox properties like selectionstart property
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Jul 27, 2009
I have used thirrd party tool from BigSpeed for file transfer. When ever I am trying to assign a value from (txtUserName) to the property like
FileTrans.GetUserName=txtUserName.text.trim
It gives error as Readonly property..... That means I can not assign a value to it.
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Aug 9, 2011
I just start working with VB. In a programme I need to keep the value in text property after programme closed.That is why I want to change (override) Text property in TextBox.Then this value will be default value when I open the programme again.I will assing a value to textbox1 in a Sub.
Sub button1_click
Textbox1.text="ttt"
End Sub
Then I need to change the Text value under "Properties" window.TextBox1 System.Windows.Forms.TextBox
I think there is Get-Set method for property override but I dont know how to use.How can I do that?
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Aug 5, 2009
I have a usercontrol with a picturebox and a few buttons related to it, such as LoadFromFile, Paste and Zoom (that last one pops up a new form). Is there a way to override the basic Enabled property of the usercontrol so that I can keep the Zoom button active all the time, while turning off the other buttons?
I realize there are 2 "obvious" replies. don't do Enabled=False, create a custom method. do everything in the one form, not a usercontrol, so you can pick and choose disabling. Both are less than ideal, given that I'm putting this control into a couple of existing forms, so I'd like to work around how those forms already behave. So is there a way to override the behavior of my usercontrol when it gets disabled? What would be my best strategy?
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May 31, 2012
I am using Linq to Sql that generated a data contract for a table. I have a date field in that table which is a non-nullable field. I need to override the auto generated property of the date field to return a specific value, something like [code]Is it possible to override an autogenerated property in the designer.vb file using a partial class? I dont want to create a new property as it is currently being accessed in n number of places and I dont want to change it in every place.
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Dec 13, 2011
Just say i have:
vb
Public Class Something
Inherits List(Of String)
[code].....
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Mar 13, 2011
How would I override the method ToString() for the property CheckBox.Checked?
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Oct 9, 2011
How do i set only date will be inserted into the database using Datetimepicker??
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Aug 27, 2009
I set the UseMnemonic property on my buttons to true and in the design page the desired letters appear underlined but when I run the application they aren't. Can I make them underlined for the user to see?
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Apr 2, 2012
How would I set the value of btnGuessL.Enable property to True?
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Jan 23, 2010
I want to create a button such that on pressing it, a property is set to true and remains true until the user presses the button next time. How is this done?
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Oct 9, 2011
how can i remove the time when i inserted into the database using datetimepicker??.
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Aug 24, 2009
Is there a way to remove default date for DateTimePicker? It defaults to today's date and I couldn't find a way to remove it. For example - when user pulls up a record and there is no date in the field - it shows today's date which is misleading. We could have the cases when the field is not filled in yet and user might think that it has today's date in it when it's actually Null. Basically I need for date fields to be blank initially. We also have the other date fields that might have dates in it but we'd need to remove the value completely. Again - DateTimePicker doesn't allow it. We tried to use masked field as well but run into the problem where existing values with single month/single day (like 1/1 for example) were converted wrong with MM/dd/yyyy mask.
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May 24, 2010
I have a dateTimePicker and I set the maxdate to today's date Now when a user select the date after today's date it won't select it but it still be displayed. How can I remove them or disable them do the users can't even click on the date if it is after today's date
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Oct 18, 2011
I want to check whether application is in debug mode/release mode to distinguish development & production application setting. I used custom attribute 'DebuggableAttribute' of currently executing assembly & its property IsJITTrackingEnabled to check application running mode.But this property always returns 'true' in both debug/release mode.
Can anybody let me know where is mistake or any alternative to achieve this?
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Mar 25, 2012
I am stumped on this one. I have a panel (pnlKeyPad) that won't change the visible property when I try to set it to True. But when I try to set the Dock Property to DockStyle.Fill it succeeds. I have tried them in different orders, setting the parent property to the splitpanel and nothing seems to fix it. The panel is on a splitpanel that is visible. The panel is set to visible = false by default.
Any ideas of why this panel won't switch to visible when I specifically set it to visible?[code]...
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Mar 10, 2009
In VB6, you can set the Default property of a command button to True / False, and when you push the enter key, it will click the button for you.
What property is this in VBNet / C#?
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Aug 11, 2011
I know how to turn a control's visible property to true or false, the only thing I don't know is: If I have, for instance, 40 group boxes in which only one is visible, when I click on a button, the first group box visible = false and the second group box visible = true, and when I click on it again, the second group box visible = false and the third group box visible = true, and so on I don't want to write the codes for every controls, since it will be quite time consuming, I want to use fewer codes to achieve this objective,
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Sep 11, 2009
I use lots of panels to hide controls and display groups of controls.
If sender Is BDVActive Or sender Is BDVCompleted Then
BDVCases.Visible = True
BDVCases.BringToFront()
[Code]...
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Aug 27, 2009
I searched on the forum / Internet for the solution how a PropetryInfo object (of a Public property) can reveal if it has a Private Protected Setter ... it was all in vain .... all help I found was about how to "Set" value of a public property having a Private Setter.I would like to know if I have a PropertyInfo object of a public property, how would I know if its Setter is Non Public?
I tried, in a exception handling block, where I did a GetValue of the PropertyInfo object and then called SetValue by setting the same value back... but to my surprise it worked well and didn error out.
[Code]...
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Sep 24, 2005
I'm writing a windows application in VB.net that I would like to give to other users. I've discovered that the Maximized appearance at runtime of my startup form is partially obscured at the bottom by the Windows taskbar if the user has set the property (via Control Panel) of the Windows taskbar to be "always on top" of other programs.I need the full client area of my start-up form to display various pieces of information, and an always-on-top Windows taskbar obscures some of that info. Is there a way, programatically, that I could turn off the always-on-top property of the Windows taskbar for the duration of my application, and then restore it to its original property setting as my application is closing?I know that I could just simply advise the user to go to the Control Panel, select display, etc. etc., and have him change the taskbar setting before and after using my application, but surely there is a programatic way to accomplish the same? I'm adding this postscript a day or so later. I've noticed that setting the TopMost property of my startup form (and setting the Size property to be large enough) will cover the Windows taskbar as desired. However, this is not useful to me. I want to be able, later in the program, to use the Show method of a DialogBox that keeps the DialogBox on top of the StartUp form even when I put the focus back on the startup Form (basically I want the user to be able to click on an item on the DialogBox, then click on an item on the startup Form, then click again back on the DialogBox, and so on, without the Dialog Box ever disappearing behind the startup Form). So the TopMost property of the startup Form doesn't help me, since it would hide the DialogBox as soon as the DialogBox loses focus. I would really prefer to issue a command, as mentioned above, that turns off the TopMost property of the Windows taskbar.
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Jan 15, 2010
on a Windows Form, an object myObject is bound to myObjectDataBindingSource like this:myObjectDataBindingSource .DatSource = myObject on the form, i have a check box bound to the property: chkProp1 for example of the object: myObjectDataBindingSource In the code when the checkbox is clicked, I need to go in code and change another text property of the object txtProper2 for example like this:
Private Sub chkProp1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chkProp1.CheckedChanged
[code].....
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Jul 4, 2011
I have a listbox of a object called Account, which has 2 fields, password, and username. How can I compare a New Account to all the accounts in the list and see if the password matches?
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Jun 7, 2012
I know how to handle a single objects property changed event very easily. I want to handle a objects property changed event that is part of another object.
Given Object:
[ObjectY = Y]
+ Public WithEvents X As ObjectX
I would like to do something like:
Private Sub XPropertyChanged() Handles Y.X.PropertyChanged
Right now I need to create a object that equals the object inside that object and then handle this variable pointers property changed, but that is just annoying.
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Aug 4, 2009
I want to assign an object property by referencing the property dynamically, with a variable name
i.e.
dim propName as string
staticObjectName.propName = 'whatever
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Feb 11, 2011
I am able to populate an object and output everything. How do I remove say the name2 object?
la.Remove(Logins("name2")) doesn't seem to work.
Private Sub btnListArray_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnListArray.Click
[code]....
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Nov 21, 2011
I'm checking If a border's child property is not set to nothing or equal to a given element, but whenever I run the program, it says that it's set to nothing and crashes. Here's my code:
If Not Me.Child.Equals(Nothing) Then ...
If Me.Child.Equals(value) Then ...
Both gives an error. What should I do to pass these lines? Also in C# it would look like this:
if(this.Child != null) ...
if (this.Child != value) ...
But this time it doesn't give an error.
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