there are many validation controls we find into ASP.NET. These controls also called server validation controls. by using those controls we can validate our web applications some common properties also of these controls. they all are described into this presentation.

1. By:- Shishir Jain

2. 
Validation:- (valid data)



Check User Input
Against a Set of rules
Validation Type:

Client Side Validation
Server Side Validation
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3. 
Asp. Net Provides Some validation controls .
These Controls are similar to other common
controls and can be used in the same way.

A Validation server control is used to validate
the data of an input control. If the data does not
pass validation, it will display an error message
to the user
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4. The syntax for creating a Validation server control
is:
<asp:control_name id="some_id" runat="server" />
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5. 
Required Field Validator

Compare Validator

Range Validator

Regular Expression Validator

Custom Validator

Validation Summary
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6. 
Compare Validator :-Compares the value of
one input control to the value of another input
control or to a fixed value.

Required Field Validatior :-Makes an input
control a required field.

Range Validator :-Checks that the user enters a
value that falls between two values
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7. 
Regular Expression Validator :-Ensures that the
value of an input control matches a specified
pattern

Custom Validator :-Allows you to write a method
to handle the validation of the value entered

Validation Summary:-Displays a report of all
validation errors occurred in a Web page
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8. 
Used to make an input control a required field.

Validation fails if the input value does not change
from its initial value. By default, the initial value is
an empty string ("").

Leading and trailing spaces of the input value are
removed before validation.

The InitialValue property does not set the default
value for the input control. It indicates the value
that you do not want the user to enter in the input
control.
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9. 
Properties
BackColor
 ControlToValidate:- id of Control
 Display:- None, Static, Dynamic
 EnableClientScript:- Boolean value
 Enabled: Bololean Value
 ErrorMessage:
The text to display in the
ValidationSummary control when validation fails.
This text will also be displayed in the validation
control if the Text property is not set

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10. 
ForeColor

Id :-A unique id for the control

InitialValue :- Specifies the starting value of the
input control. Default value is "“

Runat:- Specifies that the control is a server control.
Must be set to "server"

Text:- The message to display when validation fails
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11. 
Used to compare the value of one input control
to the value of another input control or to a
fixed value.

If the input control is empty, the validation will
succeed.
We
can
use
the
RequiredFieldValidator control to make the
field required.
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12. 
Properties :

BackColor
ControlToCompare :- The name of the control to
compare with

ControlToValidate :- The id of the control to validate

Display:- None ,Static , Dynamic

EnableClientScript :- Boolean value

Enabled:- A Boolean value that specifies whether the
validation control is enabled or not
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13. 
ErrorMessage

ForeColor

Operator:-. The type of comparison to perform. The operators are :
Equal, GreaterThan, GreaterThanEqual, LessThan,
LessThanEqual, NotEqual, DataTypeCheck

Runat

Text

Type :- Specifies the data type of the values to compare. The types
are: Currency,Date,Double,Integer,String,

ValueToCompare :-A specified value to compare with
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14. 
Used to check that the user enters an input value that
falls between two values.

Possible to check ranges within numbers, dates, and
characters.

Validation will not fail if the input control is empty.
Use the RequiredFieldValidator control to make the
field required.

Validation will not fail if the input value cannot be
converted to the data type specified. Use the
CompareValidator control,
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15. 
Properties
BackColor
 ControlToValidate
 Display:- None, Static, Dynamic
 EnableClientScript
 Enabled
 ErrorMessage
 ForeColor
 id

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16. 
MaximumValue:- Specifies the maximum value of the
input control

MinimumValue:- Specifies the minimum value of the
input control

RunAt

Type:-Specifies the data type of the value to check. The
types are: Currency, Date, Double, Integer, String

Text:- The Message to be display when validation fails,
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17. 
Used to ensure that an input value matches a specified
pattern.

Both server and client-side validation are performed
unless the browser does not support client-side
validation or the EnableClientScript property is set to
false.

Validation will not fail if the input control is empty.
Use the RequiredFieldValidator control to make the
field required.
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18. 
Properties

BackColor

ControlToValidate

EnableClientScript

Enabled

ErrorMessage

ForeColor

Id
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19. 


RunAt
Text
ValidationExpression:-Specifies the expression
used to validate input control. The expression
validation syntax is different on the client than
on the server. JScript is used on the client. On
the server, the language you have specified is
used. Ex: e-mail, Zip Code, Country
Code, Phone Number Etc.
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20. 
The CustomValidator control allows you to
write a method to handle the validation of the
value entered.

This control helps in implementing user
defined validations .

To Do this you have to write the user defined
function in the head section in <script> tag
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21. 
Properties

BackColor

ClientValidationFunction :- Specifies the name of the
client-side validation script function to be executed. The
script must be in a language that the browser supports,
such as VBScript or JScript
 With VBScript, the function must be in the form:
 Sub FunctionName (source, arguments)
 With JScript, the function must be in the form:
 Function FunctionName (source, arguments)
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22. 





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


ControlToValidate
Display
EnableClientScript
Enabled
ErrorMessage
ForeColor
Id
OnServerValidate:- Specifies the name of the
server-side validation script function to be
executed
RunAt
Text
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23. 

Used to display a summary of all validation
errors occurred in a Web page.
Error message displayed in this control is
specified by the ErrorMessage property of each
validation control. If the ErrorMessage
property of the validation control is not set, no
error message is displayed for that validation
control.
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24. 
Properties
Display Mode:- How To Display The Summary.
Values are BulletList, List, SingleParagraph
 EnableClientScript
 Enabled
 ForeColor
 HeaderText:- A header in the ValidationSummary
control
 Id
 RunAt

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25. 
ShowMessageBox:-
A
Boolean
value
that
specifies whether the summary should be
displayed in a message box or not.

ShowSummary:- A Boolean value that specifies
whether the ValidationSummary control should
be displayed or hidden
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26. 
The
BaseValidator
Class: The validation
control classes inherit from the BaseValidator
class and inherit its properties and methods.
Therefore, it would help to take a look at the
properties and the methods of this base class,
which are common for all the validation
controls:
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27. 
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ControlToValidate
Display
EnableClientScript
Enabled
ErrorMessage
Text
SetFocusOnError:- It indicates whether in case
of an invalid control, the focus should switch to
the related input control.
ValidationGroup
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28. 
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