I am creating a form for our new intranet and I need to have validation on a number of the fields.When I use the Visual Studio textbox it doesn't render the input out as I would have hoped.t adds large amounts of text to the value and name and most importantly it doesn'tclose the input with a forward slash - How do I get the text boxes to add this trailing forward slash and produce validating XHTML input fields?
View 2 Repliesiam currently working on my uni project and i have encountered a problem with valadation section.My system displays a message telling the user to input any fields that they have missed out on, listing the name of the field. However as these IF functions are in order the user must input the data in the order of how it is in the code. for example if the "consweight" is inputed and the calculate button is pressed, it thinks that all valadation above it has occured, when those fields are still empty.
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I need some help with the input validation of my application. Attached is the code that I have written as well as a screenshot of the front end. I specifically need input validation to verify that the user selected input for cbLengthOfStay is a number between 1-10 as well as input validation to verify the user input for txtMedication, txtSurgicalCharges, txtLabFees and txtRehabilitation is a positive numerical number. Please feel free to critique my attached code. [Code]
View 2 RepliesFirst off, let me apologize for my wording. I'm a student programmer and code primarily in JAVA so my my lingo may be a little skewed.I have created a method to create text boxes in my program that all have the same properties (ie certain text, size, font, fore color, backcolor,etc.) that looks like this:
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i'm doing a project for school which requires me to make a fully functioning database program with validation. I'm done with almost everything except a few things and that includes the database, since i don't really know how to make validation rules and masked fields.It's possible i'm guessing to in forms and such but in datagrid view?
View 1 RepliesTry
If Me.CompanyNameTextBox.Text.Length = 0 Then
MessageBox.Show(
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I have a form on an asp.net (VB) page which has 2 sections.
All of section 1 is always required, but section 2 is optional. However, if section 2 is started, then all fields are required.
I'm stuck as to the logic I need to create this validation.
Here's my code:
<form runat="server">
<div>
<asp:TextBox runat="server" ID="field1a" Text="Name" />
[Code].....
I have a form set up where users can enter their booking for a room at my college. I want to validate the user input to avoid SQL injection (my program uses a MS Access database) and also stop numbers and synbols in their name, etc.I can do the validation fine, but there is to be a lot of validation and then methods executed only if all validation tests come back as true. I did have something like this:
If txtName.Text = "" Then
frmBookErr.SetError(txtName, "Name field cannot be left blank.")
fail = 1
Else
[code]....
And then check the fail variable, but it obviously gets overridden later in the form if one of the validation tests come back as true.
There are a number of textboxes I would like to validate. I first set up the key press events to only allow key entry's of characters which I feel are valid for this location (i.e. numbers and "." for dollar amounts). But in addition to this I would also like to ensure that the user entered something valid using an input mask. This may be a simple question but I couldn't seem to find the answer to it. If I have a input mask of ###.## and the user enters something like 4321.23, would this throw an error and if so, how should I set up my mask large enough so the user is able to enter large amounts.
View 3 RepliesI have one textbox basically the user is going to enter in a 9 digit number or letters. From there I want to have a buttonclick event that validates this against 2 columns in a MSSQL Database. First to check if the number exists, next to check if it is active or inactive.
There are about 27000 rows of numbers so my main question is what is the best approach to handling something like this.
Should I create a view and validate in the click event. Should I create a stored procedure in sql that takes an input parameter and call it in the click event.
I was also reading about storing the information in a dataset however with that many records i am assuming that is going to be a slow process.
The 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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You have failed to give me "Staring Point".If you don't give me "Staring Point" the program will terminate.I'd like to terminate the entire program based on dialogresult. Do I just kill my main form or is there a line I can put in there to exit program?
View 4 RepliesI have text box where scores are to input between 0 and 100, they user also needs the option to enter a text word such as bye or BYE. I having problems getting the validation to work here is what i have so far please let me know what I'm doing wrong.
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I have code that will validate whether or not the input is numerical. After that's passed validation, I need to check and see if that value is greater than another.
Here's the code for the numerical validation (it works)
If Decimal.TryParse(EndOdometerTextBox.Text, EndOdometerDecimal) Then
ErrorProvider1.Clear()
Else
ErrorProvider1.SetError(EndOdometerTextBox, _
"Please enter a numeric value.")
EndOdometerTextBox.SelectAll()
e.Cancel = True
Now, I need to verify that the input for this is greater than another decimal (BeginOdometerDecimal). How can I do this? Everything I've tried fails completely (ignored) or messes up the fist validation.
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.
I am trying to create an input validation for my program to prevent the user from entering negative values. I've been using:
If (decLabor < 0) Or (decPartss < 0) Then
MessageBox.Show("Input prices for parts and labor must be positive")
How do you validate input when you are dealing with doubles. I have successfully gotten the message box to pop up when the user enters a number in a text field, but what if I have a text box that requests a number from the user and they enter text? This is the code, the even for btnDisplayFull works fine, but not btnDisplayRqst: [code]
View 2 RepliesI wanted to know if there was a way putting items into input fields on another program?
For example, if there is a login form, I want to be able to submit the user amen and password into the fields.
The program is a console program that only accepts keystrokes. It's a program for my work and I want to be able to login to the system, pull up reports and put the results into my form.
Im builtina an windows application based on 3 tiers model. I have BLL, DAL, and UI Class. IN DAL I have SQL code, In BLL I have proprietie and methods .Im trying to validate the input fields on BLL class and no problem,and im just do it after SET instruction. I also PUT a message to view error. But From BLL class I want to put the focus in textfield that return error. I cant acess form proprieties (the forms are on UI class).
View 6 RepliesI am doing form validation in VB, I validate the text field data by using txtName_LostFocus function, and on wrong input I used txtName.Focus(). It works well for me. But problem is that as for as, user does not input valid text, my EXIT button also does not works.
View 1 RepliesI've been trolling for a long time now and have decided to register as I finally have some time to start jumping into VB. The last time I coded VB, the current version was VB 4. I've been out of programming for a good while now and considered myself a beginner (tutorial example coder haha).
My question is: Where is a good place to start learning VB.NET?
I know it's an often asked and answered question - but let me give you a bit more information so more specialized replies might be given.
I'm in INFOSEC/COMSEC and would like to (eventually) develop a program that contains a DB of information that is read by the application and saves input information into a DB (encrypted) as well. The program will be a 800-53 C&A control assessment program; used for tracking system compliance for federal information systems. I would like to be able to develop such a tool to make my life easier at work instead of using Excel spreadsheets to track everything.
I would like to learn:
- Input / Output methods and validation (for secure coding)
- Read/Write DB Encryption (RSA or other 128-bit) for user input information
- Ability to generate PDF reports from the primary keys and data sets from the above DB
My goal is to create a program that allows a user to install the program, setup a 'master' account that a serial/key has been generated for - that master account is then allowed to create new projects (progress saved in DB). A project asks the user certain questions pertaining to information systems and takes the input and saves it into the DB (encrypted). When the assessment is completed, I would like the program to be able to generate a PDF report from the DB (from a layout template I created).
VB.NET 2008 windows app form.I have a groupbox with several checkboxes, comboboxes, and textboxes within it.With the help of StackOverFlow members, I've learned how to use the FOR/NEXT loop to find all checkboxes that are checked.[code]As you can see by the code sb.tostring will print every checked checkbox name on its own line.How do I associate the proper combobox.selecteditem, textbox.value, and checkbox name to print out on the same line.When I say proper...example; checkbox=pen, combobox=color, textbox=quantity.Let's say my other checkboxes are different items and the rest of the boxes are the same.
View 2 RepliesI have VS 2008 and am working in VB.Net forms.I have a webbrowser control where I am trying to control input fields that are dynamically created. If a text field has proper handles such as id and name tags there aren't any problems.For example, I am trying to work with twitter for posts. I know twitter has an API but I want to work with many similar systems and want to avoid the API as its case specific and I want to scale things within the VB.Net form. The login fields for twitter are easily handled, however
the posting field once your logged in is just a text area with a class. There is a tagname but I have been unable to post using the tagname element.
[Code]...
I have VS 2008 and am working in VB.Net forms.I have a webbrowser control where I am trying to control input fields that are dynamically created. If a text field has proper handles such as id and name tags there aren't any problems.
For example, I am trying to work with twitter for posts. I know twitter has an API but I want to work with many similar systems and want to avoid the API as its case specific and I want to scale things within the VB.Net form. The login fields for twitter are easily handled, however the posting field once your logged in is just a text area with a class. There is a tagname but I have been unable to post using the tagname element.Any examples of posting to twitter without the API ?
web1.Document.GetElementById ... ?
web1.Document.GetElementsByTagName ... ?
I've done extensive searching but can find nothing to make it happen. DOM inspectors havn't revealed much about the field.
I have a Visual Basic .exe application that I need to embed into a website
View 1 RepliesIs there anyone here, can share some tutorial or ways to convert search result which is in xml format to html view which is more easier to view compare to xml view.
View 2 RepliesI have a large amount of non-compliant HTML stored in database tables that I need to make validate.
I thought of pulling it into an inline editor like X-Standard that would do a conversion, but is there an easier way to do this via VB.NET?
is it possible to have a webresource output a url string that's XHTML compliant?For example, a typical webresource.axd reference will be something like:[code]
View 7 RepliesSome codes here on how could I validate my datagridview? I mean, a certain column on my datagridview should accept integers only, otherwise, it will return a messagebox. Kindly include on which event it should be posted.
View 17 RepliesWhat I want, is Some text fields to input text, and one image path, then I want to print that, in a format like..
Centered Text
Centered Text
-------------------------------------
[=====IMG=====] Text text text text
[code]....
But from everything I've read though, I'm completely lost.