I'd just like to know how to clear a listbox of its entire contents. I know in VB6 it was something along the line of 'lstBox.Clear', but that doesn't seem to be the case in this new version of VB.
View 3 Replieshow I can clear the contents of a listbox and all other feilds.this is what I have upto now, and this clears texbox, checkboxes ect... but it wont clear contents that appears in a listbox:
[code]...
I am trying to copy the entire drive contents of a CF card to another location. For example:
Source Location:
e:DCIM
Destination Location:
X:2010-06-01
What I want to do:
- Copy E:*.* to Destination
- The original file structure can stay the same. I want to copy everything from the root of the Source Drive
I can copy the contents if I set source string to e:DCIM.. But I'm concerned that if I get something that doesn't have the first directory (DCIM) it's going to error.
I need to be able to print the contents of a datagrid view. I have the printdialog, printdocument and printpreview dialog controls put on my form.. Here is my code so far:
Private Sub PrintToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) HandlesPrintToolStripMenuItem.Click
If Me.PrintDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
Me.PrintDocument1.Print()
End If
[Code]...
I know the code under printdocument_printpage isn't right. But how do I get everything in the datagridview selected to send it to print? I don't want the user to have to go highlighting the datagridview.
reading the entire contents of a text file that contains the Mall name,monthly rent per square feet, and total square feet. The file is names mall.txt and contains the information as follows:
Green Mall
6.50
583
[Code]....
The objective is to use the sub btndisplay_click event procedure and the three sub procedures.
I have a HTML page that I have created that essentially consists of:
<div>
<table>
<tr>
[code]....
The label text is generated on page load from an SQL query.The above is a very basic and simplified version of what I have on my page.What I'd like to achieve is to be able to e-mail the entirety of the rendered HTML page without having to build the page again in my code-behind to send it.
I can't claim credit for this code but I think it's cool. It will show the entire contents of an item in a tooltip even when the columns are truncating it. Drop a tooltip and listview container on your form with the default name.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ListView1.Clear()
ListView1.View = View.Details
[Code] .....
If for textbox it is textbox1.clear, etc.What is the equivalent for combobox to clear the value.
View 1 RepliesI have a form with a datagridview on it. I have a save button that saves the data from the datagridview to the database.After the button (save) is clicked I want the datagridview to be cleared of the data that is present in the dataGirdView.
View 9 RepliesHow can i clear the contents of a datagridview.[code]...
View 2 RepliesI am doing a school project and have created a small program that allows the user to create a binary search tree and then visually displays it on the screen as a familiar tree structure, how the addition, deletion of nodes in the tree works along with many other things such as different tree traversals. I currently using a large panel on the main form and then adding user controls containing a textbox that displays imputed values,then using the panels paint event I draw a line between the user controls, this works fine however for deletion of a node I need to clear the main panel of the nodes that will change and add them to the panel again or just clear the hole panel and redraw the whole tree
View 1 RepliesI need to delete/clear all data from an existing csv file from Visual Basic. This seems really simple but I have had a lot of problems making it happen!
View 1 RepliesI have this:
Dim split As String() = temp_string.Split(",")
''#feed all info into global variables
patient_id = split(0)
doc_name = split(1)
lot__no = split(2)
patient_name = split(3)
How do I clear all the contents of split() ?
I am using the following code for a checkbox, if checked it should print the text defined, unchceked, it clears the items in the ricktextbox. My problem is it prints fine (lets say it prints two lines) as defined, when I uncheck, it clears the text in rich text box, but when I check again, the text appears in the richtext box, but displayed from 4th line. I need to restart from the beginning/ or at least from the next available line. I cant use clear() since it erase all the contents as i have another 3 checkbox items placed.
If CheckBox1.Checked Then
richtextbox.SelectionColor() = Color.Blue
richtextbox.AppendText("Urgent:")
richtextbox.AppendText(CheckBox1.Text.ToString + vbNewLine)
Else
richtextbox.Refresh()
End If
Public
Class LoanCalc
Private Sub butCalc_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butCalc.Click
'This procedure executes when the user clicks the Calculate
'button to produce a loan payment based on the requirements
'as stated in the service request.
'Variable Declarations
Dim douPrincipal As Double = Me.txtPrincipal.Text
Dim douInterest() As Double = {5.35, 5.5, 5.75}[CODE]......
how would you clear a listbox, like with a button.
View 3 RepliesWhat 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
[code]....
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.
My XML file looks like this:
<?xml version="1.0" encoding="utf-8" ?>
<Tabel>
<Member>
[Code]....
When more nodes are added, how can I get the value in the <Naam> tags to be added into a listbox?
Note: there isn't a fixed amount of <Member> nodes and they all have to have their <Naam> elements added into the listbox.
how do i copy and move the entier contents of a directory to another ussing VB.net then also delete the files from there original directory?
View 1 RepliesI have a listbox where each line contains a short 3-4 character model number followed by a tab and then the product name the model number corresponds to. I also have a textbox which I am using to search the listbox.
The code I am using so far works somewhat, just not exactly how I would like. If I enter search text it will highlight the results in the listbox but only for the first characters, is there anyway to search the text of an entire line (index) of a listbox?
Right now I am using the following:
Private Sub txtSearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
ListBox.SelectedIndex = ListBox.FindString(txtSearch.Text)
End Sub
I'm writing a code in which the user is supposed to enter a number less than or equal to 15 and greater than 0.And If user enters a number greater than 15 then he gets an error msg. I do have the right code for error messge but the listbox still shows the result along with the error message box. How do I JUST have the error message.[code]
View 1 RepliesHow to clear a listbox in Visual Basic 2010. I googled it but people were saying just use "Listbox1.Clear()" function and that doesn't work.
View 2 RepliesI enter a name into a text box as well as a score (from 0-100) into a separate text-box then i press 'Add to array' and they go into the array BUT THE DON'T SHOW UP until i press "Show me the array.Once i press "show me the array" i get my names and scores in 2 separate parallel arrays (which is what i want)but now i need to assign a grade to each student (preferably next to each students score and name.I have no idea how to do this, possibly use Case-where or a series of 'If' statements?[code]...
View 5 RepliesI have a list box which gets populated on the first run of the program by the user. On the next run it needs to be completely cleared so new values can be displayed.
View 2 RepliesI am unable to do that and am getting anomalies when I use the SelectedIndexChanged event twice. It's all repeating.
Private Sub cboSearchCustomer_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cboSearchCustomer.SelectedIndexChanged
Dim strFmt As String = "{0,13}{1,13}{2,13}{3,10}{4,13}"
[Code]....
VS 2008 How do I clear the listbox in Visual Basic?
View 2 RepliesI have a small script that logs all of the website I visit and then displays them on a form. When I open the form the first time it displays all of the websites like it should. However, the second time I open it, it displays two of every website. The third time opening it, three of every website. I think that it is because the data doesn't get erased from the listbox when I close the form. Is there a way to clear the listbox when the form closes or do I need to find a new way to set it up?
View 6 RepliesI am getting an error that I can't track down.
Elsewhere in the project:
Public teamname (numteams) as string.
In this form as a form load event
For i = 1 to numteams
Listbox1.items.add (teamname(I))
next i
I get an error message to try new but I can't figure out what it means.
The user enters information into a textbox, and if it is present in the litsbox an error message will be displayed, if it is not already in the listbox then it will be added to it.
I save what the user enters as a variable and i am wondering if its possible to check the exact contents of a listbox?
So suppose there is a string: StringRamdom and you display it's contents in a listbox.
so listbox.Items. Add(StringRandom) but it should be displayed as A, B, C
not
A
B
C