Set Error(Try Cast(sender, Control), "First Name should be between 2 and 15 chars long.") If Not Data Entry1.
Contains Key("First Name") Then Dim label As New Rad Label() label. Text = "First Name should be between 2 and 15 chars long." label.
Super Validator also provides validation based on the Regular Expressions.
You can read more about regular expressions in MSDN starting at following URL: Regular Expression Validator is assigned to input field it looks like this in property grid: Super Validator component includes Comparison Validation that allows you to compare values of two input fields or to compare input field value to a predefined value you set.
Also, the more tests you are performing, the slower your app might become. For more information regarding Regular Expressions, you are welcome to look at these two MSDN articles: Because it is always easy to learn by doing things practically, you will be creating an app that makes use of Regular Expressions to determine valid input. NET application and design the form to resemble Figure 1. Obviously this only works for the formatting of the email.
This means that as a programmer, you have the power to supply the exact pattern for the input you desire in any text input field. Again, certain special characters are obviously not allowed.
You can use this for example to ensure that password entered matches the confirmation password on input form or to ensure that numeric input value is greater than number you specify.
Well, sometimes a good structured and thought out If statement can suffice, but it can become quite long and cumbersome in the future. By using Regular Expressions this way, you can reduce the chances of getting errors at erratic times. This sub checks the email's format and if it thinks that it matches, it returns True and vice versa.In the following tutorial we will demonstrate how use validation panel together with Error provider. For the purpose of this tutorial, we will create a new class Employee with a couple of exposed properties. By binding Rad Data Entry to object from this type we will generate several items: Private Class Employee Public Property First Name() As String Get Return m_First Name End Get Set(value As String) m_First Name = Value End Set End Property Private m_First Name As String Public Property Last Name() As String Get Return m_Last Name End Get Set(value As String) m_Last Name = Value End Set End Property Private m_Last Name As String Public Property Occupation() As String Get Return m_Occupation End Get Set(value As String) m_Occupation = Value End Set End Property Private m_Occupation As String Public Property Starting Date() As Date Time Get Return m_Starting Date End Get Set(value As Date Time) m_Starting Date = Value End Set End Property Private m_Starting Date As Date Time Public Property Is Married() As Boolean Get Return m_Is Married End Get Set(value As Boolean) m_Is Married = Value End Set End Property Private m_Is Married As Boolean Public Property Salary() As Integer Get Return m_Salary End Get Set(value As Integer) m_Salary = Value End Set End Property Private m_Salary As Integer Public Property Gender() As Gender Get Return m_Gender End Get Set(value As Gender) m_Gender = Value End Set End Property Private m_Gender As Gender End Class Private Enum Gender Female Male End Enum Private Sub rad Data Entry1_Item Validated(sender As Object, e As Item Validated Event Args) Dim employee As Employee = Try Cast(Data Entry1. The easiest way to find out how to do something from code is to setup the control the way you want it using designer and then explore Initialize Component() method. Error Provider = my Error Provider1 super Validator1. You assign your custom error provider to Custom Error Provider property.
Here is simple setup for Super Validator control: C# Dev Components.
Set Error(Try Cast(sender, Control), "Last Name should be between 2 and 15 chars long.") If Not Data Entry1.