WinForms - How To Lock Textbox
Apr 17, 2010What is the code to lock a Textbox? The following code throws an error:
txtVNO.LOCKED = True
The error is : 'Locked' is not a member of 'System.Windows.Forms.Text'
Then how to lock a textbox?
ADVERTISEMENT
How To Lock A Textbox To A Cell
Aug 15, 2011I have a windowsform in visual studio 2008, I connect to a ms sql-server.On my form I have a datagridview who I use to enter data etc and save them to the database. I then have textboxes who shows the sum of the columns etc in the table abd save that value back to the database. but for instance if i put the cursor in row 2 of the datagrid the values in theese textboxes dissapear.What I want to know is if there is apossibility to lock the textbox to ex. table test, clomn x and row 1??
View 2 RepliesHow To Lock A Textbox Using Code
Jan 24, 2012I'm newbie in VB .Net.I do want to lock a textbox but I cannot supply the right code for it.
View 2 RepliesForms :: How To Lock A Textbox To A Cell
Aug 22, 2011I have a windowsform in visual studio 2008, I connect to a ms sql-server On my form I have a datagridview who I use to enter data etc and save them to the database. I then have textboxes who shows the sum of the columns etc in the table abd save that value back to the database. but for instance if i put the cursor in row 2 of the datagrid the values in theese textboxes dissapear.
What I want to know is if there is apossibility to lock the textbox to
ex. table test, clomn x and row 1??
Auto-caps Lock On When Textbox Is Focused?
Jun 3, 2011i want to automatically turn on the caps lock when the cursor is focused on a certain textbox
View 7 RepliesASP.NET UpdatePanel Lock All TextBox Controls After Post-back?
Nov 2, 2010My code behind is VB.NET. I use ASP.NET UpdatePanel like the following. However, after the post-back, it locks TextBox controls , I cannot type anything, except when I move the mouse over and click on the TextBox.
why it locked all TextBox controls after the post-back?
Here's why I use UpdatePanel:
During the post-back, after inserting data into DB, set all TextBox text property to String.Empty After the form is submitted, the Panel pStudent should be refresh , not the entire page and the TextBox txtId should be in focus again.
here's the mark-up of the ASP.NET page: [URL]
Way To Lock Textbox If Checkbox Is Check And Allow Data If It Is Unchecked
Mar 29, 2012I use a textbox for input unless one of the checkboxes is checked, then the textbox needs to have a value of 1 which I have working.What I need is a way to lock the textbox if the checkbox is check and allow data if it is unchecked.[code]
View 2 Replies.net - Winforms Textbox Focus With TabControl?
Aug 22, 2011VB.NET Windows Forms Project, VS2010.I have a tabcontrol with several tabpages and on each tabpage there is a textbox. I want the focus (and insertion point) to go to the end of the text in the textbox when the tab is selected. If I make a junky project with the following code in each tab, it works fine:
Private Sub TabPage1_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles TabPage1.Enter
With TextBox1
.SelectionStart = .Text.Length
.Select()
End With
End Sub
However, the same code is not working in my actual project. I am having trouble debugging, because if I step through, the breakpoints and IDE mean the focus events don't fire in the same order.
Check Focused TextBox In Winforms?
Apr 12, 2011I have multiple textbox in a form. How do I know what textbox the cursor currently is? Trying to do something like this:
If TextBox2.Focus() = True Then
MessageBox.Show("its in two")
ElseIf TextBox3.Focus = True Then
MessageBox.Show("its in three")
End If
But I think its not working.
Creating Numeric Textbox (.Net 4.0 - Winforms)
May 12, 2012I'm trying to create my own numeric textbox that will handle decimal as well as whole number values. The concept is, unlike the regular textbox, this one will accept a value of 'Double' data type and show it with proper formatting e.g. Leading Digits, Digit Grouping etc. When the textbox value is called, it returns the actual 'Double' data type value. The entire thing is done through the 'Text' property; wherein the regular 'Text' property is shadowed and one with 'Double' data type is used.
[Code]...
Creating Numeric Textbox (.Net 4.0 - Winforms)?
May 12, 2012I'm trying to create my own numeric textbox that will handle decimal as well as whole number values. The concept is, unlike the regular textbox, this one will accept a value of 'Double' data type and show it with proper formatting e.g. Leading Digits, Digit Grouping etc. When the textbox value is called, it returns the actual 'Double' data type value. The entire thing is done through the 'Text' property; wherein the regular 'Text' property is shadowed and one with 'Double' data type is used.The problem is, in the designer properties window, the Text property always remains readonly and its value says 'Object reference not set to an instance of an object'. What's my mistake?
My code follows:
Code:
Imports System.Windows.Forms
Imports System.ComponentModel
Imports System.Runtime.InteropServices
[code]....
Print WinForms TextBox With Tab Formatting?
Jun 20, 2010I have been working on some code that prints a textbox that lists contact information. When I try to print it, it doesn't print out the tabs that I used to format the text. Here is my code:
Private Sub PrintPage(ByVal sender As Object, ByVal ev As PrintPageEventArgs) _
Handles prndoc.PrintPage
Dim fnt As Font = resultTextBox.Font
[code].....
Winforms - Auto-complete Textbox In .net?
May 13, 2012I implemented auto complete in vb.net textbox , but there is an issue that when user types something in text box the auto complete suggestion list blinks and disappears like if the focus changed
here is the code:
Dim Bl As New ItemBL
Dim suggestions = DAL.DisplayLikeNameList(Trim(MyTextBox.Text))
Dim MySource As New AutoCompleteStringCollection()
[code]....
I believe the problem in Mdi form because it has timer code executed after the above code :
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
LblDateAndTime.Text = Now
End Sub
Note: the auto complete code is executed in a child form not in the Mdi Form , what do you suggest to keep suggestions list "sticky" as the user writing in the text box ?
.net - Enabled Scrollbar In A Disabled Textbox For WinForms?
Jun 3, 2012I'm trying to allow scrolling in a Multiline-TextBox even if the TextBox is set to
textbox.Enabled = False
This is not possible, as the Scrollbar is disabled with the Enabled-Command, too.The default solution here is to set
textbox.ReadOnly = True
textbox.Enabled = True
but this doesn't really do the trick for me. With ReadOnly I can still select the text of a TextBox as well as place the cursor inside of it. But as I have normal (non Multiline-TextBoxes) and other controls on the same form I don't want that to happen. I want to have exactly the same behavior as all the other disabled TextBoxes.
For everything else, like mimic the color of a disabled textbox and so on, there is a legitimate workaround with the ReadOnly-Property, but I coudn't find any for selecting text and placing the cursor.
UPDATE:I tried to use WIN32 API but it didn't work as expected:
Imports System.Windows.Forms
Imports System.Runtime.InteropServices
Public Class TestTextBox
[code]....
C# - Equivalent Of WinForms TextBox.Validating Event In WPF
Sep 11, 2009In WinForms I could handle the Validated event to do something after the user changed text in a TextBox. Unlike TextChanged, Validated didn't fire for every character change; it only fired when the user was done.Is there anything in WPF I can use to get the same result, an event raised only after the user is done changing the text?
View 3 RepliesWinforms - TextBox Validation In .NET And Windows Forms?
Mar 5, 2009I'm using the following code to validate the text entered by user. It works perfectly fine. But I want to add the backspace feature so as to allow the user to delete the wrongly entered number.I have tried a couple of things and they worked but before last digit (after the decimal point) i.e. it does not allows to delete after the number has been completely entered.number is being entered in the format: 12313213.45
What shall I do?Private Sub TextBox5_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox5.KeyPress
[Code]...
Change Textbox Border Color And Width In Winforms?
Dec 30, 2011how do I change the border color and border width of textbox as something shown below
If it is mouse hover I need to display one colour and on mouse down I need to display another colour.
detailed process with the source if available.
Winforms - Allow Only A Decimal Point After An Input Of Three Digits In A Textbox?
Nov 9, 2011How do I allow only a decimal point after an input of three digits in a textbox in VB.NET?
Let's say I inputed "123" after that I can only put a decimal else it wont allow any other input. So the result would be "123."
Dim KeyAscii As Integer
KeyAscii = Asc(myE.KeyChar)
Select Case KeyAscii
[Code]....
WinForms - Insert CheckBoxes In DGV To Display Data Into Textbox
Jul 10, 2009I am working on a project. Part of my project requires me deal with datagridview in windows form. I used 'Choose Data Source' wizard to display data from Microsoft SQL Server 2005 and into the datagridview. In my windows form, I have a datagridview with the columns - Email , CustomerNam e and Select. I also have a Add Contact button.
I have 2 questions which is:-
1) How do I insert checkboxes in the Select column
2) Upon inserting checkboxes in the Select column how do I display the rows, that I have selected using checkboxes in the Select column, to display into the textbox in another windows form?
WinForms - ListView To Select Same Data Entered In Textbox
Jan 16, 2012If I enter a data in a textbox, I want my listview to select the same data entered in the textbox. Example: I have a StudentNumber column in my listview and it has data on it (ex. 123456)
I will enter 123456 in the textbox. The ListView must select 123456?
Winforms - How To Have Colored Single Border Line For Rich Textbox And Buttons
Feb 21, 2011For rich textbox in vb.net i want to have single border line. Fixed single and Fixed 3D are having some dimensional effect which i do not want. And i would also like to change the color of the border.
And same thing with the button, for them how to have single line border and specified color.
Retain TextBox Line Breaks In Winforms After Assigning Text To A String Variable?
Oct 3, 2011I have a WinForms app with a multi-line textbox. This displays and retains (after loading from the DB) line break characters fine. However if I assign the TextBox.Text value to a string variable and then re-assign the variable back to the TextBox.Text property, the line break characters are lost and replaced with a square character (can't past them here as they just paste as a line break!)
[Code]...
Change Textbox Text Size And Position Of Text In Winforms?
Dec 30, 2011I have a normal textbox which multiline property is set to true and now I need the text written in the textbox should have a large font size.So is it possible with the normal textbox.[code]...
View 1 RepliesIDE :: Set Project Default For Winforms Projects S/ Default Modifier For Controls Added To Winforms Is Private
May 28, 2010Is it possible to set a project default for VB.NET winforms projects so that the default Modifier for controls added to winforms is Private (not Friend)?I know there's a "modifiers" property in the properties window so I can set it for each individual control however I would like to change the project so from now on myself and other developers have to specifically decide to change from friend to private. (Which I would strongly discourage them from doing).I believe there is no way of doing this, but on another forum a while ago someone mentioned it would be possible with an add-in (but didn't name the add-in or where to get it).
View 1 RepliesC# - Lock Statement In VB
May 27, 2009Is there analogue of lock statement from c# in vb.net?
View 3 RepliesHow To Lock Form
Jan 23, 2009Basically,I had a button in my form1,when I click it,then form2 will be display...Now I would like to lock form2 until a button in form2 had been clicked,then only I can do anything in other forms...I means form2 must be closed before I can remain to form1.
View 1 RepliesHow To Lock Screen
Dec 15, 2011VB.net how to lock a computer screen using a form
View 3 RepliesLock A Row In MySQL?
Aug 23, 2010How do I lock a row in MySQL and then only allow the app that locked it to change the values of that row?
View 7 RepliesLock Down A Function?
Dec 28, 2009Wrote this code:
Function ReadRegistry(ByVal regType As String, ByVal RegPath As String, ByVal KeyName As String)
Dim regKey As RegistryKey
[Code].....
What I want to do is raise an error if I get passed a value that isn't listed in the case statement.. or it there a way to define it better?
Lock Records On SQL?
Sep 25, 2009I have a form and its filled from a VIEW of two tables on SQL server. When its opened i dont want other users opening that customers details from either table.I know SQL itself prevents writes if its opened but i want to stop people opening the record in the first place.[code]...
I then tried writing these values to the db on the form loading but it doesent work - it just sends back NULLs. I tried the same code in the on load event into a button and it works fine there. So im thinking i should do this as a Trigger on SQL itself, but im unsure how i could get the users computername or Windows Login name, or even username from the front end im building.