Actually i m trying to check the number validation in textbox using module. I write a code using function in module but i m not getting that hoe should i pass the value back to form. i m using isnumeric function.
how to check only number check in textbox using module
validation in vb.netemail_id validation,name,mobile number,Telephone number,zip_code,address i want to all code the textbox
View 3 RepliesTo allow a textbox to contain "15" or 15.5" as numbers nothing else...I figured that ^\d+$ works for numbers but can't get decimals to work also?
View 1 RepliesMy company uses control numbers to keep track of all of our inventory for every product that is entered into our warehouse.(ex.G123456789, T987654321) 1st Alphabet followed by 9 digits of numbers.Most of the time, these control numbers are scanned into the system by using a barcode scanner but some times these control number are entered into the system manually by hand.People make mistakes and sometimes enter in different control number.i want to be able to code my vb so that when the control number does not meet the critarion then program displays an error message.So i want to check for the first character which needs to be an alphabet and characters 2-10 to be a number.
View 4 RepliesIs there anybody which can assist me with a code in VB.NET visual studio 2010 for validating Greek TAX Registration number (VAT).
View 3 RepliesThe system we have in place at work for call centre agents to input telephone numbers doesn't validate their input, so, in a lot of cases, we have junk data being entered (0000000000 as a phone number generally). I've been taked with fixing this, but I'm not sure how to stop the agents entering junk like this.
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I am new to visual basic. Below is my
Private Sub todayMonth_Validating(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles todayMonth.Validating
Dim tb As TextBox = DirectCast(sender, TextBox)
If Convert.ToInt32(tb.Text) >= 1 And Convert.ToInt32(tb.Text) <= 12 Then
tb.Tag = True
[Code] .....
Actually, I wanted to validate the todayMonth textbox just to input number between 1 to 12. The problem comes out when I do this procedure : Lets say I input an interger 11 and it passes the validation and proceed to another textbox. Then I click back to the todayMonth textbox, it shows this error :
"Conversion from string "" to type 'Integer' is not valid."
I don't know why my value in the textbox is "null" or empty . I still saw the value 11 on the textbox.
How to make validation Only Allow letters and Numbers to Input, without any special character in Textbox
View 4 RepliesIs it possible to put Number validation in required field validator in asp.net text box?
View 7 RepliesI have this:
dim nmbToCheck as Double = 15.22
dim nmb1 as Double = 12
dim nmb2 as double = 18
How do I check wheter nmbToCheck is between nmb1 and nmb2? I know I could use < and >, but the problem is that I won't be knowing which of the numbers will be smaller, and which will be larger, and it seems like a lot of code to write for such a small issue. There must be some sort of nmbToCheck.IsBetween(nmb1, nmb2) type solution to this, right?
[Code] What I'm having trouble with is that the numbers MUST be unique. So, only one 1, one 3, one 5, one 7. So I have it go through the second statements to randomize the object again if it's the same, but after it randomizes, I kind of need it to go back to the top to see if the number is even again.
View 3 RepliesI have an array for all 26 chars of the alphabet as a boolean. What I want to end up doing is have the program take the user's guess char and set the corresponding number in the array to true. I'm new to arrays and I have no clue how to begin doing this. this is how I am declaring my array. I am declaring the array as a char for now because I don't know how to go about using a boolean array for my game, but it seems like it would be the best way to do it. [Code]
View 2 RepliesImports System.Math
Public Class Form1
Dim var_ghost As Object
Dim var_number As Double
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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My question is; when you enter a variable to inputbox like "100.5" it shall return a numeric value at line1 and "100,5" too. But when I need to check for entered value is a real number or not (Look line2) CDbl("100.5") returns 1005 CDbl("100,5") returns 100,5.
i am using a combo-box to add different grades to a column in a datagrid and i am using a loop to check if the sum the total number of sum i have made when ever i select a a grade from the combo-box.This is because i want to only add six grade and not more than six but the code i am using is giving me problems This is my code.This code is adding the total grade for me bur i want to check with a loop that will only allow the adition of only six different grade but when i run my program and begin to select the grades it just give me a message form my message box 'This is calculating the grades of an applicant
Private Sub cmbgrade_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbgrade.TextChanged
If Me.cmbgrade.Text = "A" Then
Me.txttotalaggregate.Text = (CInt(Me.txttotalaggregate.Text) + 1).ToString
End If
[code]....
Suppose I have 5 Integers(A, B, C, D, and E) and 5 Textboxes. When the program run, the user is going to input 5 numbers to those 5 textboxes. When a button is pressed, a label will show up and write the textbox number with the biggest number.
View 1 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:
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i have a function to check if a number is in an array. and if its not in an array the function returns false.if it returns false i want to insert the number into the next slot of array3. here is the code i have so far.
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When I read a value from text box I want to make sure user has entered a number(int/float/double etc.) not a string. Is there any function to check it? otherwise how do i validate it.
Language : VB.NET
Version : Visual Studio 2005
With this code i check the serial serialnumber of a usb stick.
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It is not perfect because the programma crash when there is no usb in de PC.But how do i search fot the sctick if it has a name , for example PPH ? And not G: , because it is everytime a different station.
how we can declare a connectionstring in a module and call that module
View 1 RepliesIs there any better performance by checking for a true value like this:
[CODE]..............
Than like this:
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I have a VB.Net interface that communicates with an Access 2k3 Database using this module:
Module MOD_ENGINE
'Declare Database connections controls
Dim con As New OleDb.OleDbConnection
Dim dbProvider, dbSource As String
[code]....
I want to call EngineConnect procedure from MOD_ENGINE module into popCboBox module so I can ignate the engine!
I am doing a bar cash register and I want to use a if statement to see if fosters button and number 1 on the number pad are both pressed then multiply constant by quantity number
View 1 RepliesI have a problem with a sql query. Through the query I am trying to search database for any occurrences of string (can be anything) in a column using the SQL LIKE command. The problem is that it works fine for most of the strings say john, jim, ji"m , but does not work when i include the following characters which are ( ' , { , } , and a single quotation mark). MYSQL query takes care of these special cases by putting them in [] block whenever user enters them .But i am getting the following error when i go to query the database using the GetSelectCommand() in VB.NET
Exception Details: System.ApplicationException: Number of values provided must be equal to the number of placeholders in query.I have checked the query over and over again .. but its fine .My database server is Sql Server 2008.So my application throws the exception in this command:
Using reader As MustDisposeDataReader = _
pmSystem.DatabaseManager.GetSelectCommand(selectStatementBuilder.ToString(), New Object() {})
Where MustDisposeDataReader is an instance of a class in an internally developed library, which inherits from System.Object. pmSystem is an instance of the class PlanManagerSystem which implements the commandlayer. GetSelectCommand() takes the select command
I got most part correctly but the only part isnt working right is when the last 5th digit match the sum number at the last number.
Private Sub btnVerify_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnVerify.Click
Dim strCardNum As String
Dim strSumNum As String
[CODE]...
When trying to validate controls on a windows form I realise the .validated() for each controls fires when the focus is lost. Instead I'd like to validate only when the button is pressed at the bottom, how would I do this?
View 3 RepliesA Form has two textboxes (txtA, txtB) both with the Causesvalidation property set to True. An ErrorProvider EP is added to the form.The Validating event is as follows:
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I am trying to filter a dataset using a number different inputs, selected by a number of check boxes. I have all the text base rowfilters working, but I can not make the date filter work unless I hard code the datetime into the code. The database is MS Access and I am using VB2008 to show the data. I would like to be able to use a DateTimePicker to set the filter date (without the time part) Also I would need to remove the time section of the datEnterDate. I cannot change the structure of the database fields. Also the datEnterDate is MM/dd/yyyy, because I'm in England I would like to use the format of dd/MM/yyyy if possible
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I have a txtbox(for barcode).. if i input a item number in that txtbox and if that number will match in your database, the other information(shall we say, product type, item ID, etc..) will display in my other txtboxes..
View 5 RepliesIn VB if you prompt the user for a number between 1-20, then a word, how do you get a text box to show the word the same number of time as the number selected using loops?... Ex: please select a number: 4 / select a word: cat....the text box should display ::: catcatcatcat ........
I am doing this for a class and my brain has locked up. Prob. just over thinking it though. Thanks in advance for any help!
