Getting Timer To Check TextBox For An Entry?
May 20, 2011
I've got a program and what I need is for a Timer (running in a different thread) to constantly be checking a TextBox for an entry that is similar to:Quote"(PlayerName)" has joined the server.Where (PlayerName) would be replaced with the players name in the TextBox. What I would need the TextBox to do after it has found this entry is to add (PlayerName) to a listbox. If someone can help me out this far then I can use the same code to get it to remove the player when they leave.Below is a picture of what it should look like inside the program.
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Jun 5, 2010
I am looking to programme a button to check if an entry from a textbox exists within a table.
This will done via a button.
how I would code the button to make it query the table?
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Jul 29, 2009
I have setup a page in Excel with several textboxes for data entry. I would like to be able to tab from textbox to textbox so I can enter this data as quickly as possible.
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Dec 28, 2010
Is there a faster/easier and more efficient way of checking if an entry exists in SQL then this:
Private Function CustomerCheck()
Dim connString As String = ("Data Source=.SQLEXPRESS;Initial Catalog=BFS;Integrated Security=True;Pooling=True;")
Dim cmdText As String = "(SELECT * FROM Customer WHERE Customer=" + CustomerTextBox.Text.ToString + ")"[code]......
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Mar 4, 2012
With my application I want to check what list box entry is selected in another app (different process).
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Sep 29, 2011
Using VB.Net and Sql Server. I want to check the user Entry Value. The User is entering the code in the textbox, before saving to the table, I want to check whether code is already exist in the table or not.
Tried Code
cmd = New SqlCommand("Select code from table where code = '" & textbox1.Text & "' ", Con)
dr = cmd.ExecuteReader()
While dr.Read()
End While
If value is exist, then message to the user "Already Exist" other wise save to the table.
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Apr 20, 2011
I have a sub that updates a form on certain occasions. Sometimes I need to update a form when some of the entries in my table will still have a NULL value. I used this code to prevent the sub from trying to fill the form fields with NULL data:
[Code]...
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Aug 16, 2010
Using this example:-
Dim StoreItem As New Dictionary(Of String , Integer )
StoreItem.Add("CS2a", 6)
StoreItem.Add("DD72b12", 3)
[code]....
The second MsgBox will throw a hissy fit. How do I code so I can tell if an entry exists or not beforehand?
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Jun 12, 2009
Just lately I've been 'playing' with entering data into a ListView and I have come up with the following code which seems to be OK. Can anyone see if there is any fault with it?
Code:
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Jan 31, 2007
I have three text boxes in a winform (.net 1.1).
I am expecting the user to type in a positive number or just to leave it as zero (default).
Is there a way that I can check that the user has typed in a number rathet than letters.
As I am coding it in VB.NET, I would prefer it if any answers where in VB style rather than C# or C++.
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Jun 21, 2010
I'm trying to add a name of a product to a Textbox...the name of the product is stored in a database. Now there is a Combobox with number in them....1 2 3 ect. Now if you select one of the numbers it must display that product name?
conn.Open
Textbox1.Clear()
myDataSet.Clear
[Code].....
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Jun 18, 2012
Back on my form with a ton of financial data entry textboxes but I want to have the data formatted at runtime, as I enter the data.I have a format declared as Public Const cFmtCurrency = "##,###,###" ' don't need decimal for the local China currency What would be the least compicated way to have these textboxes (19 of them) format the Long Integer values as I enter the data. I think a Lost Focus event would be silly; there must be a better, more efficient way.Also want to use this format when I retreive records from the db (don't see a reason to mask data in db)
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Apr 29, 2010
Okay, that snippet made the file I was trying to open in the %USERNAME%AppDataLocal folder worked perfectly, again, many thanks - But now I'm 3/4 of the way through my program, and I've hit a wall - I have the exact same program I made in VB6, and it works to perfection, but I am TRYING to switch over to .NET, and am finding a lot of difficulties in getting certain things to work - My biggest headache right now [ Which is basically the finishing of my program ] is a bit hard to explain, so this may be a rather long post: One of my programs that I use to keep track of my Music hard drive outputs to an XML file, in which there is one line I would like to be able to 'Replace' through the program I am making now to a different user-defined string, and close [ Applying string change/save ] the XML file. I have my Main Form, a TextBox1 [ I can't get the XML to open in a ListBox like I wanted ], TextBox2, a 'Locate String' Button, a 'Modify' Button, and an Exit Button. I open the XML file with this in my Form1_Load event into my TextBox1:[code]
The <DateValue> is the line I want to be able to modify [ Which the entire string looks like this: <DateValue>2010-04-10T10:00:03.5009756-04:00 </DateValue>, and I want to be able to change the date and time to whatever the user specifies ], which once the XML is loaded into TextBox1, when the 'Modify' Button is clicked, that string is then loaded into TextBox2... This is where I am lost - How can I apply the modified string to the TextBox1.Text [ Entire XML file ], and save it upon program end, without the rest of the XML lines being disturbed? I realized I needed another Button - The 'Modify' Button now loads the selected string into TextBox2, and I have a 3rd Button to 'Apply Modification', which I want to update the <DateValue> string in the TextBox1 [ Full XML file ] from the modified string in TextBox2, then save on exit - Hope this helped clarify things.So here's the routine:
1. Form loads, opening the XML file, and loading it into TextBox1.
2. User clicks 'Modify' Button to load searched string into TextBox2.
3. User modifies TextBox2 entry.
4. User clicks 'Apply Modification' Button, which changes the searched string in TextBox1 to the modified user-defined string.
5. User clicks 'Exit', which saves the XML changes from TextBox1 [ Without messing up the XML file format ], and the program ends.
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Feb 17, 2009
Here is something that I had in a VB6 program that worked great and was very fast. I'm trying to get it to work in VS 2005 but i am having no luck. I can'r get an answer from searching this forum or from MSDN. Here was the VB 6 Private Declare Function sendMessageByString& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String)
[Code]...
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Jan 17, 2009
My project requires users to be 18+. I have supplied a textbox for birthdate entry, but I don't know if that's the best way. Also, I don't know how to format it so that it only accepts date entry.
Next is the calculation part... yikes.
today - bithday = age
Code:
Private Sub Birthday_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Birthday.TextChanged
End Sub
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Sep 15, 2011
I want to retrieve a data from my mysql database into my textbox, my problem is how can i show the previous and next data in a column? because it only shows the last data entry.
this what i have done so far
Sub filltextbox()
strsql = "select * from tbl_studinfo"
mysqlcmd.CommandText = strsql
[Code].....
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Mar 7, 2009
I hope someone can help me. I have an ATM machine connected to a server. A form takes a textBox entry as a PIN number and matches it to a card number in the same table which is the primary key. The card number is in a comboBox.Selected Item. I have used a dataset to fill the comboBox as the form loads. I have tried for days and got nowhere.
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May 9, 2012
I made timer to check this code below each second.
If ProgressBar1.Value = ProgressBar1.Maximum = True Then
BackgroundWorker1.RunWorkerAsync()
ProgressBar1.Value = 0
[code]....
But it freezes whole program.
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Mar 20, 2012
I just want to open a form based on a users input into the textbox
Public Class MainForm
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TagBox1.Click
Form2.Show()
[CODE]....
I already have it opening the form2 based on a click from the picture, but decided aginst that design. Also any design on form2? (below) I am storing values for tags inside the forms....
Public Class Form2
Private Sub saveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles saveButton.Click
My.Settings.SaveTitle = TextBox1.Text
[CODE]...
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Apr 15, 2011
I have a single form in Visual Studio 2010...in that form...
TextBox = txtSearch
Button = cmdSearch
DataGridView = GridView1
GridView1 is bound to a View, tblAccounts.
tblAccounts includes multiple columns, including a text field for 'AccountName'...this name can be in one of two columns.I'm trying have a user enter any part of an AccountName in txtSearch, click cmdSearch, and return all matches in tblAccounts to GridView1.
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Sep 14, 2009
I want to check the state of a certain key, but only inside timer event. So my sub will be something like.......
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
Need code here along the lines of an old fashioned... 'If Input="Q" then......"
End Sub
I'm not sure how to check for keyboard input except for inside a 'Keydown' event.
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Jun 2, 2011
I have a security timer to check if the directory exists which I want to access after it's been created by an external application, but what I have done doesn't seem to be the solution although it sounds like a very normal solution to me.
What I have done:
1) External application gets run which is going to create the directory
2) I set the variables to make the timer able to know what to check
3) My application needs to wait till the boolean variable gets set to true, so I put it in a
While:
vb.net
'Non existing files protection
While (Not bDirectoryExists)
If bDirectoryExists Then
Exit While 'In case it got created in the meanwhile
End If
If Not tmrFileCheck.Enabled Then
tmrFileCheck.Enabled = True
End If
End While
4) In my logic, the application should go out of the while now because the variable is set to true, and the code moves on, which never happens..
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Sep 8, 2009
i am pulling together a cash register that will allow both bar code product entry and manual key entry.imagine if you have a tin of beans in front of you, in a small corner shop they would probably type "47" and then hit "Produce". Fairly straight forward as I have the button Produce to act upon my code and update my salestrans.mdb but,if you scan the bar code I want the same form to handle both 'real' actions, (i assume that keyboard emulation barcode scanner includes "ENTER" after providing 13 digits)....
Q. in perhaps a long winded way i want to know how to kick off an event based on the "ENTER" key being activiated by the barcode scanner)?i do not want to have to hit any buttons if i am scanning bar codes.
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Nov 4, 2011
What is the code for ignoring the case of an entry while checking to see if the entry is correct or not... (i.e. in a flashcard program... given definition, asks for the name) I don't want the case of a character to affect whether the answer is correct or not.
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Jul 10, 2009
I am trying to make a program with a bar code reader for the first time. I am programming with VB 2005. I want to differentiate a bar code entry to keyboard entry. My questions:
1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
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May 10, 2011
I need to write a program in VB 2008 express that takes an user entry from a textbox and strips out all the spaces, changes it to either all upper case or all lower case then checks to see if it is a palindrome. I must also include a loop structure and a decision structure. I have seen bits and pieces of code but I do not really know how to put them together. Basically I need it from the button click to the end. ?
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Jul 11, 2009
I am trying to make a program with a bar code reader for the first time. I want to differentiate a bar code entry to keyboard entry. My questions: 1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
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Jun 23, 2011
I am trying to copy the text from a listbox to a textbox using a timer. However when i run it all works fine intill i try and loop it then i get the following error message.
InvalidArgument=Value of '7' is not valid for 'SelectedIndex'.
Parameter name: SelectedIndex
the code i am using is Error is raised when the last item in the listbox is selected.
Private curNum AsInteger
If curNum = ListBox2.Items.Count Then Timer2.Stop() Else TextBox3.Text = ListBox2.Items.Item(curNum).ToString
curNum += 1
ListBox2.SelectedIndex = (curNum)
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Nov 23, 2009
I was told to create a project that requires me to extract information from a created textbox to another. This will happen only when the timer reach every 5s. How do I do this using timer that will allow it to run and automatically record the copy the result to another textbox after every 5s.Thx for helping
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Mar 31, 2010
I don't know much about vb.net so I'm hoping this is something that can be done fairly easily. We currently have a system where valves are fired by checkboxes (representing each valve) being checked at certain intervals and when the last valve is switched the timer restarts in order for the sequence to repeat itself. We would like to be able to have a textbox in the form where we can just type in the interval at which the valves (checkboxes) switch without having to change the interval manually in the code each time we want to change it. Currently in our code we just have a set interval. Here's the code:
[Code]...
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