Introduction to validation

Introduction to validation

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  C R EAT E D B Y: R A H U L L AVA D I YA INTRODUCTION TO VALIDATION
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  INDEX Sr No. Topic 1Introduction to Validation 2 Types of Validation 3 Different Type of validation Control
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  WHAT IS VALIDATION User’sinput must always be validated before sending across different layer of the application. Use of Validation Implement presentation logic To validate user input data Data format , data type and data range is used for validation
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  TYPES OF VALIDATION Theyare two types of Validation Client Side validation Server Side Validation
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  CLIENT SIDE VALIDATION checking of data is done at client.  Developing client side validation is fast response to the client.  If some of the validations are done at client end , web site response become.
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  SERVER SIDE VALIDATION oServerValidation is done at server end. oChecking the data of client side oServer Side validation is done using database programing tools.
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  TYPES OF VALIDATIONCONTROLS 1) RequiredFieldValidation Control 2) CompareValidator Control 3) RangeValidator Control 4) RegulatorExpressionValidator Control 5) CustomValidator Control 6) ValidationSummery
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  REQURED FIELD VALIDATION oTheRequiredFieldValidator is used to some value must be entered for particular control. Example oUser name or Password can’t be blank. oCity Name must be selected from dropdown list. oFile must be selected using File Upload Control.
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  COMPARE VALIDATOR oThe compareValidator control compares a value in one control with a fixed value or a value in another control. Example Check Password and Confirm Password.
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  RANGE VALIDATOR oThe RangeValidator control enables you to check whether the value of form field falls between a certain minimum and maximum value. Example Age must maximum value is 85 and minimum value is 18.
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  REGULAR EXPRESSION VALIDATOR oTheRegular Expression Validator control is check the value of a control against specified expression. oIf use the this control you must be use the Characters oi.e. w-use for any word character Example To input no.in format.i.e.+91-9662796943 To input zip code which must be digits only.i.e.360311
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  CUSTOM VALIDATOR CONTROL •Custom Validator allows writing application specific CUSTOM validation routines for both the client side and server side validation.
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  VALIDATION SUMMERY does notperform any validation page but shows a summery all of all errors in the Properties 1) ShowSummery : Show the error messages in specific format. 2) ShowMessageBox : Shows the error in the error messages in a specific window.