VS 2005 Implement The Following Code To Validate Several Textboxes?
Dec 31, 2010
I am trying to implement the following code to validate several textboxes The problem i cant figure out is once i get in an offending textbox and input the data i cant get out of it? I know i am probaly missing something simple but I can't seem to find it
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Private Sub tb_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles subj_ba_txt.Validating, subj_bed_txt.Validating, subj_dom_txt.Validating, subj_gla_txt.Validating
Dim errorMsg As String = "Missing Data"
Actually I am trying to get a function to validate all the textboxes in my form. At the moment, my code look like: Private Sub Textbox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Textbox1.textchanged If Textbox1.Text.Length = 0 Then MsgBox("TextBox1 is empty. Please enter something", msgboxstyle.okonly) Textbox1.Focus() Endif End Sub I have to write the same line of code for each textbox to check if it is not empty and was thinking of using a function that will be called and check each textbox in my form.
How do I validate textboxes so that they accept only numerical input (1 2 3 etc and not abc @$ etc)? Is there some kind of property of the textbox that I have to change?
1)This is my code.. (below)what i am trying to do here is to insert username and confirmed password into a sql table called login via a pre created form.I have 1 textbox, 2 Maskedtextboxes and a button.
what i would like is if the passwords do not match in both maskedtextboxes for the system to throw out a message saying passwords do not match please try again..which then clears previous content and requires the user to enter details again. once details are correct and system commits the new user details to the table and throws up a confirmation message.
I am making a project, a database project using vb.net 2005 at front end ans sql server 2005 at back end. i have to validate my form, like for sTUDENT ID, only numbers are acceptable. that what is the way to validate it? the way which i have used is
excuse this thread if email ids doesn't exists other than in english language)before posting i have searched for the solution , but most of the solutions uses regular expression to validate the format of the email id.
I am using visual basic dotnet 2008 .I am in need of validating the controls in my forms. but the validation code should not be created for each form , so how to validate the textbox from a centralized code,
Private Sub TextBoxHandlers() For Each c As Control In Me.Controls If TypeOf c Is TextBox Then AddHandler c.DataBindings(0).Parse, AddressOf Textbox_Validate End If [Code] .....
I think I'm close but how do you get what the text box is bound to? I'm trying to loop through all my textboxes and add a handler that on validation will insert a null if it equals string.empty. How to set the property manager by sending it the appropriate Binding context. I know that this code will not find textboxes in panels or ones that are on other controls, that's fine, for now. I'm also not sure how it will handle controls that are bound to different datasets.
I'm sure this should be easy but I'm having trouble getting my head around it. I shall try to explain what I need as best I can.I have a string called SoftwareGroupName. If that string is empty, I need to run some code that logs a call in our Helpdesk. So far, so simple.I then check two other variables, AuthorityLevel and InstallType. If the AuthorityLevel is anything other than "OnRequest" then a call is logged in the Helpdesk System. Again, so far, so simple.
The problem occurs when the AuthorityLevel is "OnRequest". At this point, the application should again log a call in the Helpdesk Call with a status of "Resolved" as well as add the user to the relevant group in Active Directory.What I need to be able to do is, effectively, say "If the AuthorityLevel is OnRequest and SoftwareGroupName is not empty then go ahead and create the call and update the group. However, if softwaregroupname is empty then DON'T even try and update the group and create a call with a different status (e.g. Assigned).Here's what I'm doing so far. But it seems wrong to have to check that SoftwareGroupName is empty twice.
I have the following bit of code to validate two text box entries, and it catches both text boxes individually just fine but my question is: Where would I put the code if the text box entries are both valid?
Dim intExponent, intBase As Integer
Dim ErrNum As Int16 = 1
If Not Integer.TryParse(txtExponentInput.Text, intExponent) _
[CODE]...
I tried a "Case 1" but apparently that doesn't work for some reason...
Current i'm developing an application track storage of an item.in it abusiness rule says an item can be moved to more than one warehouses. Also i need to keep the history of the Item's history, Thereefore i need to create two entities,"Warehouse" and "ItemsHistoryOfLocations". I have developped an static class diagram to show the relationshop.These are the relationship rules between the classes:
1. A warehouse could be in an Item's History of locations.
2. A warehouse could be in many Items' History of locations.therefore in the forward relationshop -- 1..*
3. In an Item's History of locations, there must be at least one warehouse4. In an Item's history of locations, there can be more than one warehouse
Therefore in teh backward relationship -- 1..* Therefore the relationship betwween teh classes is a M:N. In another Object oriented scripting languaage when ever, and M:N relationship is found between classes, their relationship is slit and put a collection class called "MemberKeyDictionaries" as the bridging entity.But in C# / VB, should we create these collection classe. IF NOT, then how should i modify my class diagram to implement this M:N relationship? and h0w do i implement this M;N relationship in code?
I am trying to implement a progress bar into my code but it seems to not run when another section of code is running. I set a timer to run when the ok button is clicked and it should then start the progress bar but also when clicking the ok button whatever radio button is selected also runs. I am trying to do this in Visual Basic 2008. I will post my current code below and I will say I am a complete novice at this so I apologize if the code looks weird:
I need to port an old Clipper app to vb.net. It relies heavily on user-written macros and indeed would be almost impossible to create without them. As VB is interpreted, I am sure it must be possible to implement code that the user has entered, but I have no idea how to do so!
I have a program I wrote that copies select files from one remote computer to another. The set up I for testing is, one computer(a) at home running the program connected to my work's network via VPN and two computers(b,c) at work side by side on the same network. I am trying to copy the files on computer b to computer c, while the program is running on computer a.
The only thing wrong with this is, the files seem to be caching to a temp folder on computer a then going to computer c. When it should be going straight from computer b to computer c. Is there a way to keep the files from trying to cache on the computer running the app?
We are working with an existing native application (most likely written in VB) that loads assemblies and calls methods with "Late Binding." We do NOT have access to its source code. We want to implement this interface in C#, and have the native application call our C# assembly. Is this anything we have to do beyond matching the method names and method signatures to make it work?
To write code to implement data from visual basic into excel. Write a VB.NET program to store the following numbers into an array named �Scores�: 89.5, 76.2, 90, 86, 81, 97, 61, and 73. Your program will calculate an average score, list each of these scores in a new Excel workbook and show whether each score is below or above average. Your program will then save the Excel workbook as TestScores.xlsx.
In column A1 it should say "average" and next to it (in b1) should have the average of all those scores. in the cells below (starting from A3) it should list the scores and the column next to each score it should say whether each score is above average, average, or below average (compared to the average calculated in cell b1)
I am trying to figure out a way to implement password protection on documents that a program I am working on creates. They should remain with the document regardless of where it is copied to or sent.Here is a rough sequence of events:
1. Application Opens (no document loaded).
2. User opens document with extension registered to application.(could also be # 1 if they clicked on the document directly)
3. Application Security checks document for security and prompts if necessary.
4. If prompted, user enters password.
5. Application checks password.
6. If passed, document opens, otherwise user is notified of failure.
I�m trying to implement a licensing schema for a template that uses the follow code snippet. (using VS2010 vb.net4)
<LicenseProviderAttribute(GetType(RegistryLicenseProviderSave)), _ GuidAttribute("2de915e1-df71-3443-9f4d-32259c92ced2")> _ Public Class Form1main ��. Form code etc. End Class
I need to utilize the GUID value in other classes within my application, as an example, as making registry entries.My goal is to have this editable at only 1 place in the template.I�ve created a Friend class that has the GUID string in it, but I�m unable to get the above to recognize the string. I�m sure that the code is simple, but it evades me.I would really like to do is to access the Guid that VS2010 vb.net creates (Project->Application->Assembly) shows and insert it into my application.
I'm trying to implement an Owner-drawn ListView in my application using the code available at this MSDN article, however I've encountered several issues.First of all, the double-click event only fires when the mouse is over the text in the first column of any ListViewItem. I'd prefer to keep the manual, timer-based, double-click detection routine as a last resort if possible.Second, when the ListView is scrolled sideways, clicking an item won't select it anymore.
I am trying to find a code to clear all text boxes in a form. I am using VB8 Here is the code I found but I get an error telling me I need a comma between two arguments
Private Sub btnclearall_Click Dim ctl As New Control For Each ctl In Me.Controls
