I've written up the following code (please note i only started to learn VB yesterday)
CODE:
And what I want it to do is when a letter, or character, is entered, i want to have Label1 display "invalid" but i cant seem to figure out how...
I am writing a hangman type game and I am displaying the word to the user in a label as all *'s, but I cannot figure out how to have just one of the *'s changed in the label to the correct letter when the user inputs the correct letter into the text box and clicks the check letter button.Everything else in the program works perfectly, except for this part.[code]When I use the .Replace it changes all of the *'s to the correct selected letter.
View 2 RepliesHow to take a name entered in a text box and convert only the first letter of each name to upper and then convert the rest to lower.
Ex: "john doe" --> "John Doe"
"jAkE sMiTh" --> "Jake Smith"
My console errors out when I enter anything other than a number or operators in the designated (input). I stink at this stuff but I have been t this for about 8 hrs. still not there. I have included a text file for the task at hand
[Code]...
Let's said, I click the row 2 on table1 datagridview1 then will display the total value on row 2 table2 to label1.text
E.g.:
table 1 (da), datagridview1
Itemcode (data type number)
Description (data type Text)
quantity (data type number)
table 2 (da2), datagridview2
Itemcode (data type number)
Description (data type text)
Total (data type number
Attached image(s)
AM doing a letter frequency analyzer program just like this website[URL]... but i don't know the right algorithm. Of course simple looping should work if it where just english letters, but the trick is it should work with unicode letters like arabic ,chinese etc.
how do i do this? if i can get sample code in vb.net or php, or an algol,
In vb2008 is possible validating textbox for letter character only?
View 2 RepliesI am trying to mkae sure that there has been 16 numeric digits entered into the masked textbox. If not show errror message and if so to call the fucnction ValidateLuhn. When calling Validate Luhn i want the program to tell me if the number entered is valid or invalid using the code in the function:
[Code]...
how to do when i click the cell datagridview1 in the same time will display datagridview2 in the label5.text (in the same row)my code doesn't work.
Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
Try
Dim k As Integer
[code]....
Ok, so I got everything working except for one thing. My program stores text in a settings files (which it saves to and encrypts to wonderfully), but it will only work once. For example, I type in an author, title and body, and click Publish, it publishes and is labeled with a "1.". Restarting the application, you get the desired effect, a decrypted string from the encrypted settings file, now publish another entry, this makes a new line with "vbNewLine" and then encrypts it, fine and dandy. Now apon opening the application again, you get an error stating "Invalid character in a Base-64 string.". What do I do?
Encryption Code:
Public Function psEncrypt(ByVal sInputVal As String) As String
Dim loCryptoClass As New TripleDESCryptoServiceProvider
[code].....
I'm writing a program and it's got a textbox for the user to enter values. Since the textbox text property should only be a "number", my program need to detect invalid charaters like "*/&()$" and tell the user to only enter a number. Does anyone have an idea how to do that?
View 6 RepliesBasically, there are letters in welsh which act as one character e.g. "ch", "ng" and "ll". As you can see by the code, i am trying to do this with "ll" right now.
Dim s As String = Label5.Text 'easy enough to see what i did there.
Dim i As Integer = s.Length 'easy enough to see what i did there.
For i2 = 0 To i - 1 'declare the loop
[CODE]...
The problem is that the letter "l" gets read out, instead of the letter "ll". So theres my problem, what i need to do may seem simple to some, but i can't see how something like this would work.
I am getting the following error:
' ', hexadecimal value 0x1F, is an invalid character
Here is my function. I get this error when it hits "reader.MoveToContent()" for the first time. Can anyone point me in the right direction?
Public Function GetSyndicationFeedData(ByVal urlFeedLocation As String) As SyndicationFeed
Dim settings As New XmlReaderSettings() With { _
.IgnoreWhitespace = True, _
[code]....
I'm performing an XML.save(filename), but when an invalid character is present, it fails with this error:{"'', hexadecimal value 0x07, is an invalid character."} [code]I've tried playing around with the XML encoding but nothing seems to help.I need to have this data saved, even though its a bunch of odd characters.
View 2 RepliesI have over 4,000 xml files that needs to be converted in to a character based on a value and entered in to a rich text box. It will do this, until it runs out of files to read. I have tried "try" statements, "if" statements...
Imports System.Xml
Imports System.IO
Imports System[code]........
I've been pulling my hair out on this one.can any of you tell me how to put a msgbox on screen whenever the apostrof ( ' ) character is beeing entered in a textbox?
View 3 RepliesPublic Shared Function GetData(ByVal id As Integer) As List(Of SomeClass)
Dim command As New OracleCommand
Dim conn As New OracleConnection(WebConfigurationManager.ConnectionStrings("ConnectionString").ToString)
Dim param As New OracleParameter
[code]....
This function is giving an ORA-00911 invalid character error. I have other methods of the same style and these are functioning correctly.
NOTE: I tried using concat() method, join method and even tried to insert just text(which turned out editable) but none of them worked as I wanted. I was thinking if substring method will work but I only have basic idea of how substring works. I want the letter "N" to be inserted into the text box when form loads and when the user enters 4digits(OrderNo2.text) which should be joined so that it can be saved together when I clicked on save button.
[Code]...
The code performs correctly when the input is an integer, but when I enter a character, the result is as though I've entered an integer. Can you tell me what's wrong with my TryParse statement?
Private Sub btnCompare_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompare.Click
' Declare Local Variables
[CODE]...
I am having a problem writing a string like a word "Zürich" the output became "Z�rich"
I am using StreamReader and StreamWriter.
Code: below
Imports System
Imports System.IO
Imports System.Text
Module Module1
[CODE]...
I'm looking for a definitive, standard (i.e. certified as being correct or tested reasonably thoroughly) for calculating the ISO week from a date, in Visual Basic (i.e. to run in a Visual Studio Express 2010 Visual Basic project). I found some routines that were Visual Basic for Applications oriented; reliant on Excel environment, some things not present in Visual Studio Express 2010 Visual Basic: [URL]
View 1 RepliesOK, every time the letter a is entered into a textbox, I want it to enter in as a 1 instead. Help?
View 3 RepliesI am attempting to write a speed/distance calculator using visual basic 2008 express edition. I have gotten the program to do most everything I need but am having some difficulties and have been trying to fix them for 2 or 3 days now without any success. Will somebody, anybody please tell me how to fix the problems.The calculator should display the distance traveled when the speed and time are entered. This is the only major requirement. However, It needs to have all info input via a list box with popup windows displayed for speed entry and then again for time entry. I would like a label outside of the list box to show "Total Distance Traveled" and I would like the list box to display the following information
[Code]...
I have 2 forms on the first form i have a label with a number in it.When i click a button on the first form this label changes and i also want to change the text property of a label on another form that may or may not be visible.Why does:Form2.Label1.Text = me.Label1.text Not work?
View 15 RepliesI have coded this not sure how to get it to display correctly to the lblGrade box. I have set it up for. Supposed to take the average of three grades and display the letter grade for the average of the three grades.
Here is the code
Public Class frmMain
Private Function CalculateGrade _
(ByVal txtTest1 As Decimal, ByVal txtTest2 As Decimal, _
ByVal txtTest3 As Decimal) As String
Dim AverageScore As Double
[Code] .....
I have an auto maintenance app where I input labor, parts, tax and other costs. I have a routine to calculate total cost. I found that total cost works fine if total cost doesn't exceed $999.99. If it does, total cost only displays 999.99. Here is the code for each cost and the calctot routine.
Function CalcTot() As Double
CalcTot = Val(FormatNumber(txtcostParts.Text.ToString, 2)) +
Val(FormatNumber(txtcostLabor.Text.ToString, 2)) + _
Val(FormatNumber(txtcostOther.Text.ToString, 2)) +
Val(FormatNumber(txtcostSales.Text.ToString, 2))
[Code] .....
Almost each letter of my mother tongue (Arabic) has two or more forms to be written with, due to its position (At the beginning, middle or end of a word) and what are the two letters before and after it, however, I've been trying to figure why when I type something in a textbox and use the AscW method to get the character code, it returns a code for the same character but not of the same form, which means:
If I type a word starting with the letter above, the letter would be in the initial form (its Unicode is &HFED3 = 65235) , but when I use the AscW to get the code of the first character it returns the code (&H641 = 1601) of the same letter in actually none of the previous forms but apparently in the isolated form (&HFED1 = 65233).I've also tried to convert the default encoding to the Unicode's but had no accepted result and no solution through reading the two Unicode bytes (which had to be [211, 254]).
P.S. I tried something else:
TextBox1.Text = ChrW(&HFED3)
Msgbox(AscW(TextBox1.Text(0)))
to check if the problem is the AscW method, but it worked just fine, I have another idea running through my mind but I'm still not sure about it .So, is there any way to detect the actual form of a Unicode character?
I'm not sure where to start. I've made an app consisting of a textbox and picture box that changes the picture every time you press a key. But what I need is to load a txt file and have pictures display one after another for each letter at a user defined rate. Including breaking this down into smaller steps. This is for an application simular to a RSVP(rapid serial visual presentation) program.
View 4 RepliesI want to diaplay a msg box in vb.net when correct credentials are not entered by user. now i m able to display the msg box but the problem is it is displayed even ehen the user enters the correct credentials . its doesnt give any error but the problem needs to be fixed. [code]
View 3 RepliesI can't get it to display the computed values in the label fields when I run the form. I've been through the example code provide to me, my textbook, google (how I found DaniWeb), and I've been over the code probably 50 times and the problem just isn't jumping out at me and it doesn't generate any errors or trigger the try catch, so I'm asking for fresh eye.[code]
View 1 Replies
