Automatically Changes Value Within Textbox
Feb 17, 2009
Can someone direct me on how can i automatically update my value when a user changs the combobox item. At the moment i have a button click when the user changes the combobox item and press the button the values get updated, everytime the combobox item get changed i have to repeat it click the button to update the value. I want something where automitically as soon as the combobox item selected the total value in the text box to change without clicking the button:[code]
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Feb 28, 2011
I have a TextBox, The situation is that when a user leaves it empty, OK button is disabled. If user types in a value of duration based on days, the button gets enabled. The problem is: let's say the user clicks on text box, types in : 100, and he realizes that he made a mistake, he erase that value and tries to start filling some other textboxes and come back again afterwards, at this level at the time user clicks on other part of form, the value becomes 0 automatically and Ok button is Enabled Now.
Private Sub txtMembershipDuration_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtMembershipDuration.TextChanged
If txtMembershipDuration.Text = "" Then
btnOK.Enabled = False
End If End Sub
Also, how can I control that automatic 0?
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Jan 8, 2009
I have an .net windows device application. I have a small form where i want to scan one item in a text box and then scan the other in the next text box and when that is done once it is done i want to save to dababase automatically. And get the focus to the first text box automatically.
[Code]...
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Nov 29, 2009
I have a texbox that I'm using for a P2P IM program. The box stores all messages but I cannot get it to automatically scroll down to the most recent IM when the box is full and scrollbars are necessary. eg. When a user gets enough messages that they must start using the scrollbars, when a new message comes, the scrollbars reset to the top instead of the bottom where the new message is. Here's the code for adding the message into the box:
[Code]...
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Jul 3, 2009
I have a program that adds text to a textbox. The textbox is multi-line and has a vertical scroll bar. I want to have my textbox to scroll down automatically when new text is added, however, I do not want the other controls on the form to loose focus.I have tried the following code with no success:
Private Sub txtlog_TextChanged()
txtLog.SelectionStart = Len(txtLog.Text)
End Sub
The code above simply produced no results, it didn't move the scroll bar at all.
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Apr 6, 2010
How can I get my textbox to automatically insert 'http://' before the url? It is an address bar in my web browser.
It needs to check if http:// is already there, and if it isn't, add it before the url.
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Jul 7, 2010
I am trying to click a checkbox in the datagridview to automatically populate a textbox in the same datagridview with the current date/time.
I have the following code which gives the error
Private Sub DgvReturns_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DgvReturns.CellClick
If e.ColumnIndex = 4 Then
[Code]....
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May 13, 2010
I have a multi line textbox (in a windows form in vb.net application) that displays values from an array. What I would like is to have the height of the textbox increase automatically so that all the rows are visible in the textbox without the need to scroll down. Also I would like to know how this will affect any controls directly below the textbox in question. ie if the textbox grows in size, will it push the items below it further down or will it overlap them?
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Oct 15, 2011
when i input data to a textbox1 and then i press enter using keyboard, then another description will appear in textbox2. For example, i have to key in a company's code: A001 into textbox1, after i press Enter using keyboard, the company's full name will appear in textbox2.
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Feb 17, 2009
how can i automatically update my value when a user changs the combobox item. At the moment i have a button click when the user changes the combobox item and press the button the values get updated, everytime the combobox item get changed i have to repeat it click the button to update the value. I want something where automitically as soon as the combobox item selected the total value in the text box to change without clicking the button:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If ComboBox1.SelectedItem = "Seafood" Then
TextBox1.Text = 3.5 * ComboBox2.SelectedItem
End If
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Jul 7, 2011
I am working on a LAN chat and I am having a problem. It's about the textbox that shows the conversation, it doesn't scroll down automatically, you have to do that manually. So is there something could make it scrolls down automatically? Something like showing the end or the bottom of the textbox.
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Jun 3, 2011
I have three textboxes on a form.The first two are for entering numbers for addition.And the third is for displaying the result of addition.I want the result of addition to appear in the third textbox as soon as I enterthe numbers in the first two textboxes, without pressing any buttons.
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Jun 6, 2011
I have a textbox that represents a primary key in my database. Because the values are nvarchars I can't automatically increment for a new insert. Instead I have to read a value from a drop-down, perform some magic, and create a new incremented value for the new insert.
I've written codebehind that does all this when the drop-down is selected. It works, in that it puts correct values into the textbox. However when I try to insert, I get an error that that field cannot be null.
I'm pretty sure it's because I'm doing this in the codebehind : myTextBox.text = newValue
which wipes out the binding the textbox should have : Text='<%# Bind("UniqueName")
How can I calculate the needed value for this field programmatically and set it back to the screen so the user can see it (and possibly override it) and still keep the databinding intact so I can create the new record?
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Sep 12, 2009
I'm trying to automatically insert commas after ever email in textbox1.text after the user imports a list of emails.Something like ..I want this to automatically occur after the user either drags n drops the emails into the textbox or copy n paste the emails into the textbox so that the user doesn't have to manually insert commas.
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Mar 15, 2012
Ive got a Listbox which displays a data/record from a SQL database, it displays "Amount" and only numbers would appear. it has a datasource.
Goal: I'd Like to get the total sum of those numbers from the Listbox and Display it to a textbox automatically or by button click event.
I thought of two ways to do this, but I don't have a clue on what to do.
1. I tried summing it all up on that exact Listbox and display the total on the textbox, here's the code that i came up with..
[CODE]...........
But the data im working with is from a database, so i got this error:Conversion from type 'DataRowView' to type 'Double' is not valid.
2. I thought of having another Listbox and "Copy" the contents shown on the Listbox1 and then sum it all up on the Listbox2, then lastly display the Total on the Textbox. I did a little research on how to accomplish that but all the clue i found is that i have to disconnect the listbox data from the datasource from being bound, and reconnect it again.. I really don't have any idea on how i could do that with an SQL database.
Here's a quick flow on what im trying to accomplish to make things.
Record from Database -----Displays on---> Listbox1 -----User Clicks--> Button1 ----Displays Total sum on----> Textbox1
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May 4, 2010
How can I load a datatable and have the system automatically select a specific row containing text that is already inputted int a textbox?
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Oct 11, 2010
If you assign a string that is longer than the current value of the MaxLenght property, VB6 automatically trims the value to MaxLength characters, whereas VB.NET doesn't. Is there any way to achieve the same in VB.Net.
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Apr 17, 2012
I want to automatically fill TextBox1 with three words from .txt file separated by sign
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Jan 17, 2012
Private Sub BindingNavigatorAddNewItem_Click
Code?
End Sub
Can it be done?
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Jan 2, 2012
My program has a textbox and a listview. In the list view i have added three person's name, John, Kat, Adel.
How do I make it such that when John's name is selected in list view, John's age is automatically displayed in the text box?
And when Kat's name is selected in list view, Kat's age is automatically displayed in the text box?
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Feb 21, 2011
I'm fairly new to ASP.NET & VB.I've been asked to take an existing textbox that is automatically filled with the current date and allow the user to either add a "+" or "-" and a number or a spcific number and convert that into a date.I underdstand the basic concept on how to do this, but I'm running into some problems using the proper commands in order for this to work.The Textbox is called txtDate.What I've tried to do is this:
If txtDate = '+' Or '-' Then
DateAdd("d", txtDate, today)
End If
Here is what the whole thing looks like:
Protected
Sub
DateEnter_Click(ByVal
sender As[code].....
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Apr 9, 2009
I have a treeview and text box below it... is it easy or even possible to allow a user to change the height of the treeview which will automatically change the height of the textbox so there is no gap between them?ie one gets bigger the other gets smaller etc etc
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Jan 8, 2010
Is it possible to have a Textbox on a form that when the user inputs data, ( during Runtime )that data remains in the Textbox for good and the Textbox then becomes read only ? Is it also possible to make it so that the CD with the programme on, is in the PC when the programme is being used. Perhaps writing the Textbox data back onto the CD ?
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Jun 30, 2011
I want my program to go to a site, fill in the data, click submit then once completed go to the next site.I know you can do this in webrequest but I can only get it to login but once Ive logged in I dont know how to make it click a button automatically, I only know how to do it semi-automatically by getting the ID.
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Apr 15, 2011
I'm actually more comfortable in Java language for developing apps. But since my requirement now is getting tighter, I need to jump forward into VB.NET
well yeah... seems need to adapt some a bit. Anyway, I typed a lot for making this setter and getter properties inside visual studio;
[Code]...
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Feb 1, 2012
I am writing an encryption application that requires a 64 bit key. I am currently using the following code to automatically generate a key.
Function GenerateKey() As String
' Create an instance of a symmetric algorithm. The key and the IV are generated automatically.
Dim desCrypto As DESCryptoServiceProvider = DESCryptoServiceProvider.Create()
[code]....
I am wanting the user to create their own key. Can I convert a user defined password (a string) into a 64 bit key that can be used?
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Aug 28, 2010
I have:1 Picturebox named: picturebox1 ,1 Timer named: timer1 and 3 images named: image1; image2 and image3.What code should I add so that in the timer's tick event it automatically changes the picture in picturebox1 to image1 then image2 then image3 and so on.
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Jan 25, 2012
I am working on one report in vb.net.when i click on export button,an excel will be generated,allowing user to prompt for save or open.There is one more button provided for mailing a report.for that i need to attach these excel file.Is there any way to send excel automatically without saving and sending as attachment when clicking on mail button.
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Sep 24, 2010
I am using code to send email through SMTP that is given manually. I wish that user does not have to give the SMTP. My application should get SMTP automatically and use that. Can I know what is the SMTP of the current ISP, with which my client is connected?
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Jun 20, 2012
im doing a project like now a simple. how can i increment a value automatically im using an ms access.
my data type for that is a number i have a ID no. Field and when i add a record i want to automatically add a ID no. after i add a record the ID no. will become this 12-001 and add another one the id no. will automatically become 12-002 i have no textbox in the form.
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