.net - Clear() Or Txtbox.Text = "" Textbox Clear Methods

Sep 20, 2010

way to clear textboxes in VB.Net and what is the difference between the two methods? I have also seen people be critical of folk using clear objects on their forms and i can see why but in this case, i am only learning.



txtbox1.Text = ""


Clear A Textbox Of Text?

Jan 12, 2010

i know its probably the first thing you were taught but how do i clear a textbox of text. and i know it too


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I am writing a LAn Chat and it works so far but when I send the data it still remains in the textout box. I want to clear that box when the button is clicked and I am not sure if i am doing this right.[code]...

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Dec 8, 2009

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it is a textbox to collect the date (in relation to my other post) when the program runs, the DD will be displayed in a textbox, i need it to go when the user clicks to enter the day or to be highlighted/selected (NOT THE TEXTBOX, just the TEXT INSIDE)

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Oct 6, 2011

I'm trying to write a Database manager in VB (2010) that updates a SQL database that compiles and summarizes my financial records. The code works, but I'm having issues with one exception that I think I understand, but can't circumvent. I've built an I/O form that enters a series of purchases and sales into a temporary datatable. After review of the list, the program connects to the database and executes the SQL. That all works and isn't a problem.


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Dec 13, 2011

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Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click

End Sub

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May 21, 2009

I trying to fade-in the application startup form using the forms opacity and a timer control.I dont know if I am using the right approch to achieve this so suggestions for alternatativ approches are welcome.I have a form with a few randomly select controls on it, one of which is a textbox.When I run the code, the form and all its controls reflect the changes to the form opacity property set through the timer_tick event except the textbox.The textbox remains clear all the time and I would like to know: Why?[code].....

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I have a timer that runs every time by itself, and for the code the runs in it I would like to have it clear the dataset before it does anything, the timer runs every 10 seconds, so I tried to do dataset.clear but it would crash if the dataset had no values

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Jun 23, 2011

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serialport.writeline ("at+cmgl=1")

i try this but not work and it still show some lines on debug

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Feb 7, 2009

i wan to display the text from combobox into the textbox and clear the combobox text when click on the button.But when i select another text from the combobox and click the button, the textbox display and overwrite the previous text.How can i do so that when click, textbox display text from combobox and clear combobox text. Then click again, display the new text at 2nd line of the textbox without deleting the previous text?

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Jul 15, 2009

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Apr 22, 2009

How to clear textbox if the value equal zero i have several textbox's with currency look at the picture i am posting you will see the price of 2.99 then under neath for other box'shas this $0.00

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Jun 30, 2009

How I can clear last char in textbox in c# when I press key like D0 (mean when I press D0 clear 0 in my textbox)? Or don't let me enter 0? You know I don't want user cant enter number in textbox .

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I am having throuble resetting my textboxes to nothing if the selection in the listview is nothing. I.e. when i select a record my textboxes are updated with teh selected data, but if nothing is selected after something is selected I would like to clear the textboxes to blank again.[code]

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Jun 4, 2011

I have a single text box that has text in it. When I put the mouse in it and click it, I need the text to clear so new text can go in.

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Sep 22, 2009

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Nov 4, 2010

Im making a textbox which wont allow the user to use spaces but rather then clear the textbox it simply deleats the last character (which is the space)


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Why Did Clear() Clear Both DataTables

Feb 28, 2011

In my winform program (in vb.net) I wrote:

Dim dt As New DataTable
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(I finally found a solution - dttemp = dt.Copy() instead of dttemp = dt. But I still can't see why Copy() was necessary in this case.

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May 28, 2010

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Jun 8, 2009

User inputs values into textboxes , user hits calculate(Button)  user needs to be able to input new values so.


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Mar 18, 2011

I have used many of the controls in vb.net forms, including a textbox and combobox, but I want to clear all my text boxes at once, while not typing textbox1.clear() for each one. Is there any other way to clear all my textboxes?

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I am using the StreamWriter to create a log file for my application. However I do not see a method on how to clear the file (make the file blank again). Also before I clear the file I want to rename it so that I can have multiple log files, a new one produced everytime the application runs.


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Jun 2, 2009

I am building a scientific calculator.
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Oct 15, 2009

Supose i have two TextboxOne For normal Text and Second For After Replace textif i m Type some text in textbox 1 then Textbox2 show Its Replacement Text

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Oct 12, 2011

I am trying to do some extra credit stuff for school and was curious if there is a way to clear a text box after you would click ok in a MessageBox that pops up after an exception and/or an error. I have used a try/catch and would like the text the user entered text to disappear after they click OK in the message box that pops up. It would be great if i could get it to happen when either of the two message box OK buttons are clicked.[code]...

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Apr 16, 2009

I want a button that can clear all the text in, for example: If the button1 (which is the clear button) is named clear, I click it, would the code be something like button1.clearalltext = True?

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Feb 9, 2009

Is it possible to clear all the textboxes whose title starts txt for example txtname, txtaddress when pressing a button?

Similar to resetting the application without closing and restarting.

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Feb 12, 2012

I just want the boxes to clear when clicked, then change the writing color.

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Dim watermark As String = "yes"
If watermark = "yes" Then
Attack.ForeColor = Color.Yellow
watermark = "no"
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I am confused about how to make a button able to clear the text in all textboxes. I know in c# I can just say textbox1.Clear(); but this won't work in this case.

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Nov 7, 2011

i am making a mini calculator and I have two problems with my current validation setup in the code. The code concerned is below:[code]Basically, I only want to allow numbers in the text box. When I enter a letter for example, the message comes up ok, but then when the box is clicked away, the rogue letter remains. Can someone tell me how to clear it properly?Also, when I use the backspace button in the box (pretend I want to change my input from 3 to 37), then the messagebox is prompted when I don't want it to be. I only want it to appear when a letter is entered.

1) How to I clear the banned characters from the text box after the message is clicked off

2) How do I get VB to ignore any backspace presses to prevent the messagebox from coming up.

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As the title suggest is there a way to clear multiple text boxes with a single command as opposed to :



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Apr 7, 2012

I have a web page that has a few text fields, and a reset and submit button. I'm having trouble getting the reset button to work to clear the text fields because the required field validators and regular expression validators are blocking any code in the reset button's click event from occurring. how to get the validators to not activate when the reset button is clicked? One method I tried was to set the enabled property of all the validators to false in the reset button's code block but no luck.

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Nov 17, 2005

I have a reset button created in my VB form, but don't know how to code it so that it will accomplish what I want. I want it to clear the form's text boxes so that new input can be entered. I could just code an end statement but this closes the form, and I want to keep it open to continue working with it.

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Jan 21, 2009

After I have entered data into 12 textboxes and pressed a button to execute the code, the data from the text boxes goes into a database.I want to clear the information in the text boxes after the button has been clicked, at the moment I have 12 lines of code which are similar to this.

MsgBox("Data Has been Added to The Database")

is there a easier/simpler way to remove all data from the text boxes without using 13lines of code

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Jul 20, 2010

I have a button that inserts data into a database.With that button I want it to serve two functions.One for insert and one for clearing the textboxes after the insert is done.I did a little bit of digging around and her is a code snippet that i found online:

Dim ctrl As Control
For Each ctrl In Me.Controls
If TypeOf ctrl Is TextBox Then ctrl.Text = ""


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Feb 27, 2011

I need to trigger an event (clear some text boxes) when I click on the "ok" button in the MessageBox. Below is the event triggered messagebox code. A box pops up with the included text and an "OK" button. The program appears at this point to stop and wait for the click on "OK" MessageBox.Show("Check -Sender Information-data")

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Dec 1, 2010

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I have a group box with 4 radio buttons and another groupbox with 4 text boxes.how do i write a short code to clear all text boxes and radio buttons within each box.i have written code the long way, ie..[code]but i think there is and easier way but i cannot find the statement.

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Mar 18, 2011

What I have is on my form there are several text boxes.  These text boxes are for user input and attached to each text box is a Private Sub txtBox1_KeyPress function.  In that function I have some validation code to check that the user is inputing only what I want them to.  And if it doesnt it will pop up a message box telling them so, then it is supposed to clear the text box so the user can try again.  But no matter what I try, the text box does not clear it still keeps the last character typed (the invalid one).

Here is the code for one of the text boxes.

Private Sub txtLanIp_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtLanIp.KeyPress
Dim strEmpty As String = ""
If Char.IsDigit(e.KeyChar) = True Or Char.IsPunctuation(e.KeyChar) = True Or Char.IsControl(e.KeyChar) = True Then
'do nothing


The commented methods at the bottom are some of the other things ive tried to make this work.  The txtLanIp.text.clear() is what ive tried from the beginning.  I have also tried setting the text to "",  I even created an empty string and set the .Text value to it but no matter what it wont remove that character.  I have also tried various trim(), len(), Select() functions, most either give me an 'index out of range error', a 'length cannot be less than zero' error or a general ExceptionOutOfBounds error.  I am just tearing my hair out as to why the simple way doesnt work, there is no logical reason why and it gives no error it just doesn't clear the box. 

I have also tried moving the validation to a _LostFocus but e.KeyChar isnt a valid method or property for that declaration, which doesn't surprise me but I wanted to try everything.I dont see how it would matter in this case but I am running Windows XP Pro SP3,  though I also see the same behavior in Windows 7 64 bit ultimate sp1 and windows 7 64 bit pro.

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When I will click the suggested text shown in the combobox it will disappear.My Combobox btw is connected in a database.If I type Kev then kevin and kevsky will show at its suggestion then when I will click any of it ,the combobox text will be empty or will clear what I typed ("Kev") and will not show what I clicked.[code]

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