When clearing input from users. What is the difference between clearing it in these two forms
txtExample.Clear()
versus
txtExample.Text = String.Empty
The only difference that I could find was that the labels aren't cleared with .Clear() (or at least from what I inferred from my book that's not possible). Is there a noticeable speed difference or should I just clear both labels and txt boxes with String.Empty
I run a program multiplying decimals with integers. If a user enters a non 0 number etc. the try catch works its charm. i added some lines to clear the text boxes and that works fine but
lblReva.text = ""
does not clear the labels where the answers are displayed, on the contrary it displays the correct value calculated and enters a 0 for the erroneous entry. I would like to clear all the labels and text boxes(except the instruction and assingment labels)so the form is clean once more so the user can try to be "more on" target next time.
Try
decReva = CDec(txtBoxa.Text)
decRevb = CDec(txtBoxb.Text)
[code]....
Not integers but constants declared as decimals but that is immaterial here. "Doh"
I have three textboxes and a button. The button's role is to clear all the textboxes. This one textbox that I don't want to clear keeps clearing. What do I have to do for this one textbox to not clear up when the clear button is pressed ?
View 2 RepliesI want to clear all of the text boxes in a groupbox without hard coding them all. I tried the following snippet, but it also clears all of the form labels which I would like to keep.
For Each TextBox In GroupBox1.Controls
TextBox.Text = ""
Next
I would like to create a button that clears textboxes and comboboxes when it is clicked. For example when 'btnClear' is clicked then txtDate gets cleared (i.e. txtDate is 22/05/2000 then when btnClear is clicked it has nothing in it)
I have already tried
txtDate = ""
and
txtDate = Nothing
but an error comes up.
I have developed a simple form with some checkboxes, textboxes, radiobuttons, and textboxes inside a groupbox. Initially I had all of this inside 3 tabs. I created a button to clear all selections so user can restart the process of selection if so choses. It does not work (see below). I thought it is the tabs - so I went on and removed them (by coping the groupbox - deleting the tabs and then pasting the groubox into the main form). The code still does not work. Is there a setting that I must change or something else because a created a simple form with a couple of groupboxes that had all the above mentioned and it works just fine - all of them clear. Just in my form it does not work
View 6 Repliesso yesterday this code was working for my userforms and today its not. Its a simple clear command for textboxes and comboboxes. what is from here?
Dim ctl As Control
ForEach ctl In Controls
IfTypeOf ctl Is TextBox Then ctl.Text = ""
IfTypeOf ctl Is ComboBox Then ctl.Text = ""
Next ctl
I have several textboxes in a form, and have a button which inserts all the values in a Database and I have to clear the content of all the textboxes and focus to the first one right after pressing the button.Now I can easily do that using the Clear method of each of the textboxes but it takes 10-12 lines of code just for that. Can I do that in one go?
View 2 RepliesThis must've have been asked before but I couldn't locate it. In a mixed code project (VB and C#) we were debugging some old Visual Basic code where a statement as follows could be found:
If Request.Params("xxx") <> "" Then
'do something
I considered this a bug as Request.Params could be null, in which case the statement would've become false which wasn't the idea. So I thought. I just found out, -- probably for the tenth time and I will keep forgetting -- that the following two statements are not equal, while Nothing in VB should be equal to null in C# (thought I):
if(String.Empty == null) // always false
If String.Empty = Nothing Then ' always true
Should I dismiss this as a typical Microsoft backward compatibility effort, or should I consider this a huge error in the VB.NET compiler? Does anybody know the Microsoftean opinion on this oddity?
How are textboxes and labels different? (when text box is set property readonly to true and label set property borderstyle to 3d)theemathas likes: math, chess and computer programming?
View 2 RepliesI have a array of strings and I am looping through them, but the string might be empty so I am trying this:
[Code]...
When calculating currencies in textboxes and labels, what's the best way to go about it?As it appears the $ sign and the , presents a problem when calculating.I thought it best to create a variable without those items when doing the calculation.
View 9 RepliesOkay, I've looked but I can't work out arrays for textboxes and labels. So, using 2 textboxes, how do I do the following in VB.Net?
[Code]...
I have a parcel post assignment, and i have three textboxes that represent height, width, and length. here are my questions1. how do i decalre them as integer? do i decalre the textboxes or the labels that represent them?2. how do i multiply all three together and multiply the total by 4pence and add 20p?
View 6 Replies[URL]...In this program, you need to insert two Textboxes, four labels and one button. Click the button and key in the code as shown below. Note how the various arithmetic operators are being used. When you run the program, it will perform the four basic arithmetic operations and display the results on the four labels.Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
How can I make use of Bullets in Labels and Textboxes? I want the user to enter text into a Textbox and after he/she is finished hit the Enter key, then a Label must display a Bullet followed by the text entered in the Textbox. Hendri Bissolati (Novice programmer)
View 3 RepliesI'm trying to write code that can print only filled text boxes in the form and then print the label near them. I searched and thought the code below is the end result I could reach.[code]...
View 1 RepliesI have run into another problem with my current project. I have a form that I need to print. Doing some searching online I found a few examples and implemented it into my code. It prints but prints all my text boxes and labels stacked on top of one another. How can I get this to print my textboxes and labels formatted as I have them in the form?
Here is my code:
Private Sub PrintToolStripMenuItem1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PrintToolStripMenuItem1.Click
PrintDocument1.PrinterSettings.Copies = 2
PrintDocument1.Print()
[Code] .....
I remember that in VB5 there was an "auto-redraw" property that needed to be turned on in order to make certain features refresh themselves. I'm having trouble with getting labels and text boxes to change in VB2005.A sample code snip would be
Label1.text = "Zero"
Sleep (1000)
Label1.text = "One"
[code]....
I've been looking into the SaveFileDialog and OpenFileDialog features, but have been failing to implement them. The actualy program that I would be implementing this in is much larger, so alternative methods are welcomed.
[Code]...
My textboxes and labels are fine in design view, but when I switch over to Debug or Build, a couple of the textboxes are pushed together and the labels aren't in their original spots.Haven't seen this before and was wondering if anyone has any suggestions as to why and how to fix?
View 12 RepliesHow can i make my app in a different language, so people can select another language,I need to translate some buttons, textboxes and labels.
View 2 RepliesI am trying to add an unicode character like this one to lets say listview item. I load character from file to string and from string i create a listview item with text same as string () all I get is charater like box.. interesting is that when I copy that character to program supporting unicode I get original char back ().. I tried everything. Searched a lot on internet and forums.. Question bothers me since yesterday, and my project can not continue without unicode support in basic form controls such as textbox.
View 4 RepliesThe three labels "Floor" "Typ." "HeadsI can insert once fine but multiple times only the third instance is written to the form.I have 2 textboxes to test that the Label.Name is changed but I can't make the Label.text stand for each label. I am certain this will occur too with the textboxes.I also need to keep track of these boxes for further use with the program.
Public Class Form1
Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
[code]....
I tried to create a ghost text using Labels over the Textboxes. I am using VB.Net2005. I accomplished this with this code:
Public Class frmDataEntry
Private Sub PhantomTextLastName()
If txtLastName.Text = "" Then
[Code].....
Is there any way to reduce this code, so that when I try to add another Textboxes I'll never have to retype a bunch of codes. I have basic knowledge n using Module and Class
I created a form with 2 labels 2 textboxes and a button. Basically it is a login from. When I launch the form it shows the blinking cursor in the 1st textbox(this is ok) but when i try to type nothing happens. Once i click the form(not the textbox-textbox works too but wanted to note it was the form) it works. I have tried doing textbox1.focus(). I have tried doing the form.focus(). Neither were successful. It may have nothing to do with focus but it seems to be that to me.
View 12 RepliesI have a program with about 350 textboxes (about 50-60 of which are not visible to start) and with the click of a CheckBox I'm looking to make them visible.
View 4 RepliesI have wrote a program to help me arranging roster of 4 workers.The program is putting textboxes and labels on form1, textboxes and labels are interactive each other and calculate total working hours. how can I print out the "form1" ?
View 3 RepliesI have a code in Save Button, and part of it, a code that checks if the dynamic text boxes that has been created is empty. But when the system runs, it only check the first set of text box and an an message appears "Collection was Modified; enumareation operation may not execute.".
Here's the code:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Try
For Each txt As TextBox In TextBoxes2
If String.IsNullOrEmpty(txt.Text) Then
[Code]...
I have numerous textboxes which I use to gather data to be placed into an array. But I want to ensure, before I place them to the array,that there is at least one character (letter or number, no space) in each textbox. Seeing as I have about two dozen, it would seem tedious to write an If...Then statement for each of them. And I cannot use a custom textbox class for this. So how can this be done?
View 3 Replies