Validate Controls Based On Rules Stored In A Table?
Jul 27, 2010
is there a way to validate controls on a form, where the validation rules themselves are stored in a database table?My problem is my application is used to submit forms to mulitple government agenices both local and state level. Every entity seems to have there own rules about what needs to be in what location. i would like to not have to code all of the various rules for all the different fields. My thought was to store them in a database table and then perform validation based on rule table lookups...however I would like to use the .NET validation controls.
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Jan 26, 2011
I have a Combobox in DropDown mode. I have the code for handling the selected list item in the Validating event of the Combobox If the user highlights the text in the Combobox and presses the Delete key, the text is deleted The user then clicks the MenuStrip and the dropdown menu appears.
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Jul 8, 2009
I currently have this working already for one of my combo box's, but when i try to use the same code i get this error ''There is no row at position 6.'' . The are 2 fields in the table asset_type_id, asset_type_name', im trying to dispaly the values in a combo box for the field 'asset_type_name.
the code for ' Friend Sub RetrieveCustomerInformation2()' works but the other friend sub throws the error.
Imports System.Data.SqlClient
Imports System.Data
Imports System
Imports System.Data.OleDb
[Code]...
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May 11, 2010
i am using vb.net 2005, in windows application, i have controls like textbox, listbox, radiobutton in one form, all the controls are required to fill, how can i validate all controls in one buttonclick..
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Dec 22, 2011
I have a lot of controls on my asp.net web form that require validation. Rather than list each control in the code behind page that requires validating I would like to add the css class "required" to the necessary controls and then on submit the code behind will validate each control with this class. I'm fairly new to .net so here is some Pseudo code:
Public Sub ValidateAllControls(ByVal a As Object)
For Each c As Control In a.Controls
If c.Controls.Count > 0 And c.Controls.class = "required" Then
[code]....
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Apr 15, 2012
how to validate date time picker controls.
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Feb 23, 2011
I have a query that I have to run that requires me to get rows from a table based on the value of a field in another table (which I have gotten earlier). I currently have it done like this (simplified).
[Code]...
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Aug 23, 2010
I have two tables Employees and CafeLogs. Some employees can be cashiers and also customers at the Cafe shop.
Table structures:
Employees: EmployeeId(PK) , FirstName, LastName
CafeLogs: LogId (PK), CashierId, EmployeeId, Value, => CashierId and EmployeeId are the data from column EmployeeId of Empoyee table
Table relationship:
Employees 1:N CafeLogs (CashierId (FK))
[code]....
Right now I know how to select only LogId, Employee's name, and , Value, not with Cashier name yet.
Dim query = From log In db.CafeLogs _
Join emp In db.Employees On emp.EmployeeId Equals log.EmployeeId _
Select log.LogId, emp.FirsName, emp.LastName, log.Value
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Apr 6, 2011
I am creating a project in VB.NET in which one of the reports require that the name of employees should be displayed as column names and whatever work they have done for a stated period should appear in rows below that particular column.Now as it is clear, the columns will have to be added at runtime. Am using an ODBC Data source to populate the grid. Also since a loop will have to be done to find out the work done by employees individually, so the number of rows under one column might be less or more than the rows in the next column.Is there a way to create an empty data table and then update its contents based on columns and not add data based on addition of new rows.
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Jul 23, 2009
I want to be able to call a certain stored procedure based upon different criteria. May I do something like on lines 6 through 12 ? If so, am I properly creating my command object on line 3?
1 Dim connString As String = ConfigurationManager.ConnectionStrings("EMRConnectionString").ConnectionString
2 Dim conn As New SqlConnection(connString)
3 Dim sprocComm As New SqlCommand
[Code].....
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Mar 18, 2010
retrieve the actual T-SQL that is to be executed by a SqlCommand object (with a CommandType of StoredProcedure) before it executes...My scenario involves optionally saving DB operations to a file or MSMQ before the command is actually executed. My assumption is that if you create a SqlCommand like the following:
Using oCommand As New SqlCommand("sp_Foo")
oCommand.CommandType = CommandType.StoredProcedure
oCommand.Parameters.Add(New SqlParameter("@Param1", "value1"))
oCommand.ExecuteNonQuery()
End Using
It winds up executing some T-SQL like:
EXEC sp_Foo @Param1 = 'value1'
Is that assumption correct? If so, is it possible to retrieve that actual T-SQL somehow? My goal here is to get the parsing, validation, etc. benefits of using the SqlCommand class since I'm going to be using it anyway.
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Nov 19, 2009
I have pictures of each employee stored in SQL database with Image database.
Select pic from empimages where emp_ID=10
give the picture of that employee in binary format.
How do I create a physical jpeg in C:images folder based on the above query in vb.net.
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Dec 23, 2011
I already know how to call insert, update, delete & select procedures in DataSet.xsd window. And I also know how to call queries by table adapters. But I just found out that its not possible to call all functions by queries (such as insert). It works when I test the query but when I try to add it, it says "Failed to get schema for this query". So I built a few stored procedures which do many functions (such as transaction, insert, update etc...). But I am unable to use these stored procedures in VB form. I found some tutorials mentioning that it can be done by defining connections and some other stuffs with which I don't want this to be. I want to call these procedures by writing code in VB code editor window with DataSets, TableAdapters, BindingSource etc...
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Jul 9, 2010
I have a table (Projects) which is linked to projectVersions on projectID..projectVersions contains several columns on which I'd like to filter a returned project (and associated projectVersions) list. For example there is a "capacity" column and a "country" column. I am doing a filtered list of projects on one page and I'd like to include all projects where any one of the associated projectVersions has a capacity of 750ml and a country of "France" for example.It may be that a particular parameter is not set and so I pass a zero to indicate not to filter on that.I guess this needs some kind of subquery as when I try and do something like this: [code] it doesn't work as the "xxx" bit, being one-to-many, expects me to specify an item to get at the entities within and yet I want to query where ANY of the associated versions match one of the criteria.
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Jun 3, 2011
I's there a way that I can access the properties of all controls stored into my array of object using LINQ.
Public Sub DisAble(Byval ParamArray ctrlCollection() As Object)End Sub That is my sub routine where im trying to reset all controls that will stored into that object of array. But im trying to attain that using LINQ so I wont use any loops to access all of it.
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Mar 20, 2009
I have downloaded and played with the standard MS Examples in the VS2008 Download pages.They are very good for some areas but a little light in database handling.
1) Search Grid plus the Record Selected Display (this is beyond the scope of MIcrosofts VS2008 Examples)
2) Using plain ADO commands with VS2008 (rather than all the fancy data controls)
3) Using Stored Procedures rather than all the fancy data controls
4) Database Access Examples
My application area of interest is mainly ERP, Accounting and CRM Systems
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May 15, 2009
I was wondering if anyone had any resources on vb controls, I'm just a beginner so please excuse my little knowledge. I have been having troubles with the checked listbox control, selectedindex is the method for displaying the checked list position yeah? so what is the method that i need to use the actual vaue that is stored in the checked listbox ( the string ) ?
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Sep 16, 2010
I had this question before "Resize image on the fly make the image lose quality online but locally works nice".And what i got now is that it's not a problem of local or online, i ran this resize on the server itself "dedicated server", and i got the same bad quality image, so the problem is in the IIS configurations.What in iis can make this bad quality image happen?
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Jul 16, 2010
I am working with a datagridview on my form and have a CellContent Click event as shown below;
[code...]
Now, when I check the checkbox Yes and type in the comments textbox, the Comments are not stored to the table. However, the checkbox is set to a true value.
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Mar 19, 2009
I have most of this working, but there are some issues yet. Basically, it's a "History" form for patients There's a date field for each entry, and if that date doesn't match the date you're accessing the form I want it to disable all controls so you can't edit the form.So it would have to check the current date with the date that is on the form.The issues I'm having are this. It seems to work because when I click today's date nothing gets locked like it used to, but when I do click another date everything in that form gets locked, including the override button and the scrollbar. I don't want the scrollbar locked, and I want to have an override button so the user can edit the form if they truly wish. It also locks the DateTimePicker so I can't pick another date, I don't want that locked either.I tried enabling the DTP in the sub below but it must get ignored
[Code]...
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Nov 28, 2010
I am looking to create several custom controls (PictureBox Derivatives) on during runtime. I've read that the best way is to create template controls that will be created, and duplicate them in the Controls array.
Well, that's all fine and dandy, but what's the best way to store the template? I considered a seperate form with all the templates laid out on it for easy access for my editing, and keeping them out of the user's sight. I also considdered doing a Struct for each template, and smply mirroring values onto the control being created from the Struct to the created control.
I'm looking for ease of development first and foremost, as I'm most likely going to have a vast number of these templates, and keeping the system as simple as possible will eliminate a lot of hair-pulling. After development ease, I'd go for optimisation.
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Oct 15, 2010
I have a form with some textboxes on it. The textboxes show values from a table. I have a binding navigator that lets you step through the records in the table and the textboxes update. What I want, is to have a control, say a listbox, that allows you to select a value which will filter the data behind the controls so that you only have one record.
So, for example, say you have a table of contacts. There are textboxes on your form that show name, phone, address etc. You could then have a listbox that showed a list of all the contacts and you could select one, which would in turn the textboxes. The filtering field could be contactID for example.
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Jun 11, 2010
I'm using a stored procedure, but am receiving a "Procedure sp_OrderTracking_Update_UpdateItem has no parameters and arguments were supplied" error. Here is my stored procedure:
[Code]...
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Apr 26, 2012
I'm trying to figure out a way to validate the user data entered:
[Code]...
This is in MVC3, VB.net. I'm looking for an easy way to validate a users input data into the editorfor field.
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Feb 25, 2011
My gridview does not use controls, because it is populated using expressions
<asp:TemplateField HeaderText="As Of Sales">
<ItemTemplate>
<%#Getsales(Decimal.Parse(Eval("asofsales").ToString())).ToString("C0")%>
</ItemTemplate>
<FooterTemplate>
<%#Getsales1().ToString("C0")%>
[Code]...
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Jun 12, 2012
I need to create a sample question types web form in VB.NET which allow user to the following:he user selects the control type from dropdown (TextBox, RadioButton, ListBox etc). Generate controls dynamically based on the control type on the webform.It will always show the TextBox (where user writes the question) and (generated control - TextBox, RadioButton, ListBox etc) and save those values to the database.
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Jun 25, 2009
I have a group of three radio buttons. Depending on which radio button is selected, I want to disaply one of three controls - a textbox, a dropdown list, or a button. How do I display controls based on the result of a selected radio button?
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May 17, 2010
I have the need to disable multiple controls based on specific circumstances.[code]Thing is, this doesn't work for ToolStrip items. Is there a way to do this without checking the type of each control passed to the function?
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Mar 19, 2009
I have this form with a bunch of input controls. I have code working that will disable them all like I want, but need to work with the if/then statement portion. Basically, it's a "History" form for patients. There's a date field for each entry, and if that date doesn't match the date you're accessing the form I want it to disable all controls so you can't edit the form. So it would have to check the current date with the date that is on the form. Then I also want to have an override button that will ask you if you want to enable all controls anyway, which I can probably figure out. There is some older VB6 code (I think) but I know nothing about VB6 or how it translates.
I think this is the portion that does what I want in VB6:
Private Sub DATE_DblClick(Cancel As Integer)
Call Setdate
Exit Sub
Dim sysDate As Date, Response
sysDate = VBA.Date
[Code] .....
How to have the program check the current date with the date in this form. From there it's probably just a simple if/then statement to fire off either sub. This date control on the form is a DateTimePicker. Maybe I just have to compare that to the system date but I still don't know what to call for that.
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Jan 11, 2012
I am trying to decrypt my password stored in aspnet_membership table... I am using the following code,
[Code]...
but at the line of DecryptPassword(encodedPassword) it shows error as "Length of the data to decrypt is invalid."
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