Change A Textbox Property At Run Time

Aug 4, 2009

I want to give the user the ability to modify the font characteristics of a textbox on a form, using buttons. In the button click_event, I can successfully have the user change the font color to red directly:

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Change Property Value When I Change Name Property Of Control In Desgin Time?

Mar 10, 2010

I inherits textbox Control and I added some new properties to it .one of these properties value i want it to change it's value in desgin time when i change Name property of the new textbox

Public Class NewTextBox
Inherits TextBox
Private _txtSubName As String = String.Empty

That is the property for set or get SubstringName of Textbox

Public Property SubName() As String
Get
Return _txtSubName[code].....

that's the property i want to change it's value when i change Name property of the control.i tried to overrides Name property but it's not overridable also i trieds to overloads it but it doesn't work in desgin time.Here is something i tried but it's wronge.

Private _txtName As String = ""
Public Overloads Property Name() As String
Get[code]......

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Change PrintPreviewControl 's Property In Run Time?

Oct 24, 2010

I want to change PrintPreviewControl 's property in run time.

for example change paper size to A4?

or change land scape ?

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Change The Order Of Property Serialization At Design Time In .Net?

Oct 21, 2009

I have a class where it's problematic to relay on the properties being serialized in alphabetical order at design time.In other words, property Z must be serialized before property A.The problem arises because property property Z clears property A whenever it changes - which happens in InitializeComponent.I work around this problem by setting a FirstTime flag, but that seems messy.

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Partial Classes - Add A Control Or Change A Property At Design-time

Mar 26, 2008

In my never ending search for more knowledge, I have come across Partial Classes. I was wondering if some of the kind people who actually understand the uses could explain some of them to me. Now I know that when we create a form that we actually create a partial class which the generator rewrites when we add a control or change a property at design-time, and this allows us not to have to worry about setting up the controls ourselves.

[Code]...

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Textbox Text Property Won't Update Programmatically After First Time Running Through A Method (but Will Thereafter)?

Jul 28, 2009

This is my first post on this forum, so please excuse me if I'm posting wrong. Anyway, I've been having an issue that I've never seen before and is driving me nut, I have a windows form on which I have placed many textboxes that display information from a MS SQL database. The user can then change these values and hit a "save" button which writes the changes to the database. I also have certain textboxes that with the "on leave" event (after a user enters a possible new value) trigger a method that recalculates some of the other fields based on the new information. Hopefully that all makes sense.

So the problem is, when I run through this "recalc" method the first time around, it doesn't update those textboxes that it's supposed to. However, when I put a breakpoint in and debug through it, the debugger shows it putting in the correct values into the textboxes. It's just as soon as the method is done, it puts them back to blank, or whatever they were before

'Rebind stuff here
lblCabinets.Text = curMfg.ToString("c")
txtCabinets.Text = curMfg.ToString("c")

[code].....

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Change .Text Property Of TextBoxes In An Array Of TextBox

Jun 19, 2012

I have an array of textboxes. Lets say this one:[code]What i want to do is set the .Text property for each of the textboxes of the array.I have tried this: [code]

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How To Change TextBox Text Property On A UserControl From The Other Loaded One

Nov 30, 2011

I have two UserControls already loaded how to change TextBox text property on a UserControl from the other loaded one.

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Change A Property Of Data Bound Textbox On Start Up Of A Form?

Mar 12, 2009

I am trying to change a property of a data bound textbox on start up of a form and each time a new record is navigated to. I can't find the a good event to attach this action to.

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Change The Border Color Of A Textbox At Run-time?

Mar 29, 2006

knows how to change the border color of a textbox at run-time. What i mean here is i already have textboxes on my form at design time, and want to change their

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User Resizeable TextBox - Change Size Of Text Box At Run Time

Jun 16, 2010

I am running a program that needs to allow the user to be able to change the size of a text box at run time. I know I need to use the MouseDown, mouseMove, and mouseUp events. I just need some help with the coding to send the information.

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C# - Why Is Attached Property Property Changed Event Only Firing One Time

Nov 27, 2010

I have a listbox binded to a list of objects. For each list item I wanted to have a rectangle whose fill color is determined by a few properties of the binded object. So I did the following:

Made sure INotifyPropertyChanged was implemented on my object.Created a class to expose the properties I am interested in as attached properties.Binded the properties of the object to the attached properties of the rectangle Created a style that uses triggers to set the rectangle fill based on attached properties.

This works, but only the first time the property of the object changes. After that, the attached properties do not seem to be receiving notification when the data object's property changes. I have double checked and my data object is raising the INotifyPropertyChanged event.

<Rectangle Style="{StaticResource RecordStateRectangleStyle}"
Width="10" Height="10" Stroke="Black"
local:RecordAttachment.RecordState="{Binding Path=RecordState}"
local:RecordAttachment.IsDeleted="{Binding Path=IsDeleted}" />

[code]....

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Bind A Dataview.count Property To A Textbox.text Property?

Aug 3, 2010

I have a dataview an i would like to show the count property in a text box.

i tryied the following

me.textbox1.DataBindings.add(new DataBindind("Text",DataView,"Count"))

But i have a exception.

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Textbox - Use The Right Alignment Property Or The RighttoLeft Property Of A Text Box?

Nov 18, 2009

I want to type the characters from right to left (to behave as a right alignment). But I am not supposed to use the Right Alignment property or the RighttoLeft property of a text box.For example, I want to enter the characters of a string from right and each character should shift one space left so that the user can enter another character after that.

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Forms :: Change A Property On Form - Doesn't Show That Change

Jan 13, 2010

I'm working on a simple base form in which all the other forms in the project will inherit. This base form only adds 5 properties (at the moment) dealing with painting a gradient background. The problem I'm facing right now is when I change a property on Form1 (the test form) and click run it doesn't show that change. I also checked the .designer.vb file and when I make a change it's not added to the code behind file, I'm at a loss right now to why.

[Code]...

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When Form Loads It Load The Current Date And Time But The Time Does Not Change It Should Run?

Aug 24, 2010

I am using this line of code on form load event it is working very fine but i have to problems

1. It replaces the form name and display the date and time but i want to keep both date and time and forms caption separated by some space.

2. When form loads it load the current date and time but the time does not change it should run.

What should i do please please help me code is as follows

Me.Text = Date.Now.ToLongDateString & " - " & TimeOfDay

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Formatting Excel - If I Try Using Style.numberformat With The Date And Time Formats, They Don't Change And Are Entered As If Didn't Change The Format?

Mar 11, 2011

I am throwing some data out into Excel and am having some formatting troubles. I have 5 columns (date, time, a long number I don't want displayed in scientific notation - text is fine, text, text). I can get it all working with numberformat, however I have to do them different ways.

Date works this way cell.numberformat = "m/d/yy" and it formats it to say 3/1/11

Time works this way cell.numberformat = "h:mm AM/PM" and it formats it to say 8:07 AM

For the long number cell.numberformat = "@" and it doesn't change the format and it gets displayed in scientific notation

BUT if I use cell.style.numberformat = "@" it works as it should, but it messes up all of the date and time cells. Apparently when you use style.numberformat, it doesn't just apply to the cell you're working with. If I try using style.numberformat with the date and time formats, they don't change and are entered as if I didn't change the format at all.

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Asp.net - Get The Current Date And Time In Textbox In IST ( Indian Standard Time)

Dec 6, 2010

How to get the current date and time in textbox in IST ( Indian Standard Time) in vb.net ?

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Create A New Textbox Every Time Previous Textbox.text Is Entered?

Jan 16, 2010

How to create a new textbox every time previous textbox.text is entered?

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Change Textbox Depend On Selection Change In ComboBox Column Of Datagridview?

Dec 15, 2011

I have a DGV I am working on, and I have many columns.

For example I have Columns colcase(Combobox), colreportTime(Time)

the combox shows 4 cases {A,B,C,D}

what I need to do is if the user select "C"

the the colreporttime will show the time of this change unless the old value is C

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Never Once Ever Come Across A Time To Use A Write Only Property

Jan 7, 2010

I am just curious about this, but in all my years writing code, I have never once ever come across a time to use a write only property. Of course readonly is pretty common in class development, and while I may have had classes where I don't specifically need to expose a property for reading, generally you end up with a method like SetValue or something like that, which is more or less the same idea as a writeonly property.

I don't recall ever seeing a writeonly property in a .NET framework class. So can anyone provide an example where it actually made good sense to use a writeonly property over either a read/write property, or a method?

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MySQL Database - If I Change The Item From The Combo Box..the Textbox Not Change?

Dec 2, 2009

whats wrong with my code?if i change the item from the combo box..the textbox not change or has an error?

conn = New MySqlConnection()
conn.ConnectionString = "server=localhost; user id=root; password=12345; database=gigzta; allow zero datetime=no"
strsql = "SELECT accNo FROM accinfo WHERE (completename LIKE '%" & ComboBox2.Text & "%')"[code].....

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Textbox - Every Time The Letter A Is Entered Into A Textbox - Want It To Enter In As A 1 Instead

Aug 27, 2010

OK, every time the letter a is entered into a textbox, I want it to enter in as a 1 instead. Help?

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Getting Property By Javascript 2nd Time Fails

Apr 28, 2009

Here's a problem: I've made an ActiveX control with VB.net (VS 2005) to use in a web application. The control has some properties and methods. The control loads fine in IE, calling methods works, but asking for a property with javascript is a problem.

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The first time objTest.SomeProp returns 'Test' as it should. The second time is gives an error: 'Object doesn't support this property or method. After that, all methods and properties are 'unsupported'. Somehow this problem started after I implemented IObjectSafety interface in the control, but I have no idea how it affects the property and how to solve this problem.

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Detect If Press Enter In The Textbox Change Event And Not In Textbox Keypress?

Dec 13, 2011

how can I detect if press Enter in the Textbox Change event and not in Textbox Keypress?

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VS 2008 Make A Textbox Change Some Letters Within Textbox When Click A Button

Jun 29, 2009

I want to make a function in VB 2008 with which u can make a textbox change some letters within the textbox when u click a button. So example: Textbox1 has got in it: url...Then when I click button 1, it has to change ....

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.net - How To Show A Form's Custom Property At Design Time

Oct 22, 2010

I have a form where I have created a custom property, DataEntryRole, and set its Browsable attribute to True, as shown:

<Browsable(True)> _
Public Property DataEntryRole() As UserRole.PossibleRoles
Get
Return mDataEntryRole
End Get

[Code]...

When I view the designer for my form, DataEntryRole doesn't appear in the property box. I assume that it should appear if I were to create another form that inherited from this base form, but that's not what I want. I want this property to show up in my current form.

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Make Property Required / Catch At Compile Time?

Sep 2, 2011

[code] i get an app error when running the app, because i didn't set the ID.I was wondering if there's a way to make sure the programmer assigns all properties in the class,and fail at COMPILE TIME rather than have to catch the error at runtime...

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Public Property With Percentage Symbol At Design Time

Mar 18, 2011

A component I'm making has a public property that represents a percentage. How I can give it a % symbol in the Properties Window at design time in Visual Studio? I mean, like the Opacity property of a Windows Form.

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Usercontrol With Designer Browsable Property Not Saving Value At Run Time?

Aug 17, 2011

I have been making a control and have added a property for a list(of CustomClass). The custom class contains a string, an image and a list of another custom class which contains a string and an image. I have added this property to the designer by adding the browsable attributes and all appears to work correctly with this.

My problem comes when running the program. I can set all of the values within the property and I can go back to them and they are saved, however, as soon as I run the program, the values are wiped out as the property is set to Nothing.In order to allow my property to be edited and saved, I realize that I must initialize the list and have done so in the accessor method of the property (if the property's value is nothing).

I have modified the values in the designer and placed a breakpoint on all of the items which use the property and it's underlying field, as well as on the property's methods itself. The first breakpoint hit is of it being accessed and the value is always nothing.

I'm not sure where the values are supposed to be stored as I have checked the designer code where it would normally store types such as strings and I have checked the resources to see if they have been saved there (like an image would be). After running the code, the values in the designer are wiped out also.

[Code]...

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