Validation

In ASP.NET there are total Six validation Controls

1. RequiredFieldValidation Control
2. CompareValidator Control
3. RangeValidator Control
4. RegularExpressionValidator Control
5. CustomValidator Control

RequiredFieldValidation Control : -

<asp:TextBox ID=”txtName” runat=”server” MaxLength=”50″ ValidationGroup=”Val”>asp:TextBox><asp:RequiredFieldValidator ID=”reqName” runat=”server” SetFocusOnError=”true” Display=”Dynamic” ControlToValidate=”txtName” ErrorMessage=”Please enter first name” ValidationGroup=”val”>asp:RequiredFieldValidator>

<asp:Button ID=”btnSubmit” runat=”server” Text=”Submit” ValidationGroup=”val” UseSubmitBehavior=”true” />

CompareValidator Contro : -

<asp:textbox id=”txtFirst” runat=”server” MaxLength=”5″></asp:textbox>
<asp:TextBox ID=”txtSecond” runat=”server” MaxLength=”5″ ValidationGroup=”Val2″> </asp:TextBox>

<asp:CompareValidator ID=”txtCompare” runat=”server” ValidationGroup=”Val12″ ErrorMessage=”Please enter correct value” ControlToCompare=”txtFirst” ControlToValidate=”txtSecond” Type=”Integer” Display=”Dynamic” ValueToCompare=”Val” > </asp:CompareValidator>

<asp:Button ID=”btnSubmit2″ runat=”server” Text=”Submit” ValidationGroup=”val” UseSubmitBehavior=”true” />

RangeValidator Control :-

<asp:TextBox ID=”txtAge” runat=”server” MaxLength=”2″ ValidationGroup=”Val1″ >asp:TextBox>

<asp:RangeValidator ID=”rngVal” runat=”server” ControlToValidate=”txtAge” ErrorMessage=”Please enter correct age”

Display=”Dynamic” ValidationGroup=”Val1″ MaximumValue=”10″ MinimumValue=”1″>asp:RangeValidator>

<asp:Button ID=”btnSubmit1″ runat=”server” CausesValidation=”true” UseSubmitBehavior=”true” Text=”Submit” ValidationGroup=”Val1″/>

ReglarExpressionValidator Control:- (Email Validation)

<asp:TextBox ID=”txtEmail” runat=”server” MaxLength=”50″ ValidationGroup=”Val” > <asp:TextBox>

<asp:RegularExpressionValidator ID=”regVal” runat=”server” ControlToValidate=”txtEmail” ErrorMessage=”Please enter correct email” ValidationGroup=”val”

Display=”Dynamic” ValidationExpression=”^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$” ><asp:RegularExpressionValidator>

<asp:Button ID=”btnSubmit” runat=”server” CausesValidation=”true” UseSubmitBehavior=”true” Text=”Submit” ValidationGroup=”Val”/>

CustomValidator Control :-

<asp:TextBox runat=”server” id=”txtCustom” MaxLength=”8″ ValidationGroup=”ValCust”/>

<asp:CustomValidator runat=”server” ID=”cusCustom” ControlToValidate=”txtCustom” EnableClientScript=”true” Display=”Dynamic”

ErrorMessage=”The text must be exactly 8 characters long” ValidationGroup=”valCust” ClientValidationFunction=”Validate” />

<asp:Button ID=”btnCustom” runat=”server” Text=”Submit” ValidationGroup=”valCust” UseSubmitBehavior=”true” />

 

This page has the following sub pages.

• Checkboxlist Validation