My 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.
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
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.
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 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:
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.
I am trying to find a way to validate my MaskedTextBox control called mskDate which is a short date property. I need to determine whether the user entered a date in the MaskedTextBox control. I cannot use the Not IsDate function because what happens if the user does not make an entry, then the Not IsDate would not work because the user is not required to enter a date. What happens if the user only enters 03/? This would not be considered a date, but a valid date is required. I tried using the substring to see if an entry has been made but it does not work because of the / / format.
I have a question related to asp.net and vb.net. I have a repeater control that I bind some data to and allow users to update/change fields within certain text boxes. I added a validation control to trigger when the user doesn't enter a valid date or the text "TBD". On submit, I want to go through and highlight each field where its corresponding validator is not valid. This is my current code, but I am lost as to how to find the text box control.
Sub ValidateDateField(ByVal sender As Object, _ ByVal args As ServerValidateEventArgs) 'validate against three conditions - date, "TBD", and "N/A"
[Code].....
how to get cont = textbox1row1 of my repeater control.All examples I have seen so far directly state the control as in text1.BackColor =
I'm trying to make a validation control that only allows (a-z, A-Z, and 0-9). Which control to i use in vb.net or do i have to write specific code to validate it?
If you enter 11 for instance into the year component of the date then tab off the control the text returned to the validation function is the text before the year was entered rather than the new text.The problem can be overcome by making the control invisible then visible. This has been the case since Visual Studio 2003, it would seem to be a bug.
I have added ASPXUploadControl to save the Image File.I want to apply Validation (Required Field Validation) on this control.. but i dont find ValidationSetting Tag in this Control
I have a form of tour application that has 2 dates, from date and To date. now i'm using the dd/MM/yyyy format for the date entry and i need to Validate To date like To date must me greater than or equal to start date. earlier days should be disable, i want to do that with compare validator.
What is the best method to do data validation? I want to do data validation when the user exits a control so that he gets immediate feedback. I can use the Validating event or the Leave event for that. The problem is, that if the user doesn't know the right answer, and just wants to click the cancel button and leave the form completely, it won't let him. It continues to give him an error message until he completely deletes his answer. Very frustrating. Does anyone have a good method for doing this?
I have inherited a control and added the Validating and Validated events to it, the validation works when the I set focus on another control but somehow it is not being triggered when a StatusStrip button is clicked hence I need to be able to trigger the validation.
I am executing this validation summary program in Visual web developer 2008 express edition, found the validation summary property is not visible in output.
<div><asp:ValidationSummary ID="sum1" runat ="server" ShowMessageBox="false" HeaderText="You details cannot be processed due to following errors:" DisplayMode="BulletList" ShowSummary ="true" Font-Names ="arial" Font-Size ="12"></asp:ValidationSummary> <asp:CompareValidator ID="cmp1" runat ="server" ControlToValidate ="txtname" Display="Dynamic" Operator="DataTypeCheck"
I am trying to delete a customer record. In the page I have an usercontrol for address and it has some validation. I cannot delete the record since it fires the validation controls.
I am writing a User Control. Into each control I am loading a custom biz object. Because the biz object implements IDataErrorInfo interface I am able to use the ErrorProvider control on the user control.
I am binding the ErrorProvider to the biz object like this:
Me.ErrorProvider1.DataSource=MyBizObject This is all working perfectly EXCEPT. The validation is happening (and therefore I am displaying the blinkey error signs next to all feilds) as soon as the User control is loaded into the host form.
Each biz object implements a SAVE method and I want the validate to not happen until the save event is triggered on the biz object.
Is there any way to skip a the validating event of the active control when the close button of the form is clicked. It is very annoying when user wants to close the form, but due to the validate event of the active control, it asks for the valid input. The user is forced to give valid input to close the form. I have searched a lot for this on net but no any proper solution could be found.
Design a form, which contain a TEXTBOX control that accept a UserID input, with a CommandButton control to perform a validation based on the criteria listed below. Display a Message on whether the UserID is Valid.
Criteria:
The UserID must contains SIX digits follow by a single character, limit the entry to a maximum of seven characters only.
The postfix character of the UserID is derived from the summation of all the six digits divided by seven and using the remain as followed:
I am trying to find out how to get a particular control.In some applications i've seen they have this little control like a small text box.It has 2 little buttons on the size one for up and one for down.
These buttons change the displayed numbers higher and lower.Here, let me show you a picture:
How can i get this thing? I don't see it in the toolbox of the VB 08'
I've written a piece of code that takes 3 fields from a database and writes out the 3 added together, but with the middle field cropped down, so that the total number of characters is always 28, what I thought was the width of my listbox. I realised when I debugged though, that the listbox was docked and grew or shrank depending on the size of the screen.
Is there a way to determine how many fixed width characters will fit in a control, at run time?
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
Assume the ListView1.Width is "30", then each column should be in event width of 10. Furthermore thereshould only be three columns becuase i have added only three columns. However, when i resize teh form, the listview controls shows an additional column.
How this was added? How do i fix this, so that when i add 3 columns it will have only three columns even when resized the form or not
