- RequiredFiledValidator
- RangeValidator
- CompareValidator
- RegularExpressionValidator
- CustomValidator
- Validation Summary
1. RequiredFiledValidator: Makes an input control a required field. Example
<asp:TextBox ID="txtEmailId"
runat="server"></asp:TextBox>
<asp:RequiredFieldValidator
ID="RequiredFieldValidatorEmailId"
runat="server"
ControlToValidate="txtEmailId"
ErrorMessage="Email Id
is Required" ValidationGroup="Submit"></asp:RequiredFieldValidator>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
2. RangeValidator: Checks that the user enters a value that falls between two values. Example
<asp:TextBox ID="txtWorkingDays"
runat="server"></asp:TextBox>
<asp:RangeValidator ID="RangeValidatorWorkingDays"
runat="server"
ControlToValidate="txtWorkingDays"
MaximumValue="7"
MinimumValue="1"
ErrorMessage="Working
day must be between 1 to 7"
ValidationGroup="Submit"></asp:RangeValidator>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
3. CompareValidator: Compares the value of one input control to the value of another input control or to a fixed value. Example
<asp:TextBox ID="txtEmailId"
runat="server"></asp:TextBox>
<asp:TextBox ID="txtEmailIdReEnter"
runat="server"></asp:TextBox>
<asp:CompareValidator ID="CompareValidatorEmailId"
runat="server"
ControlToCompare="txtEmailId"
ControlToValidate="txtEmailIdReEnter"
ErrorMessage="Email
Id and Re Enter Email Id must be same"
ValidationGroup="Submit"></asp:CompareValidator>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
4. RegularExpressionValidator: The RegularExpressionValidator control is used to ensure that an input value matches a specified pattern. Example
<asp:TextBox ID="txtPinCode"
runat="server"></asp:TextBox>
<asp:RegularExpressionValidator
ID="RegularExpressionValidatorPindCode"
runat="server"
ControlToValidate="txtPinCode"
ValidationExpression="\d{6}"
ErrorMessage="The
pin code must be 6 numeric digits!"
ValidationGroup="Submit"
/>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
5. CustomValidator: The CustomValidator control allows you to write a method to handle the validation of the value entered. Example
Client Side Validation:
<asp:TextBox ID="txtPinCode" runat="server"></asp:TextBox>
<asp:CustomValidator ID="CustomValidatorPinCode"
runat="server"
ControlToValidate="txtPinCode"
ClientValidationFunction="validate"
ErrorMessage="Name must be more than 2"
ValidationGroup="Submit"></asp:CustomValidator>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
<script type="text/javascript">
function validate(sender, e) {
var ctrl = document.getElementById('<%=
txtPinCode.ClientID %>');
e.IsValid = false;
if (ctrl.value.length == 6) {
e.IsValid = true;
}
}
</script>
Server Side Validation:
<asp:TextBox ID="txtPinCode" runat="server"></asp:TextBox>
<asp:CustomValidator ID="CustomValidatorPinCode"
runat="server"
ControlToValidate="txtPinCode"
OnServerValidate="validate"
ErrorMessage="No
of characters must be between 5 and 8"
ValidationGroup="Submit"></asp:CustomValidator>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
protected void
validate(object sender, ServerValidateEventArgs e)
{
if (e.Value.Length == 6)
{
e.IsValid = true;
}
else
{
e.IsValid = false;
}
}
6. Validation Summary: The ValidationSummary control is used to display a summary of all validation errors occurred in a Web page. Example
<asp:TextBox ID="txtPinCode"
runat="server"></asp:TextBox>
<asp:RequiredFieldValidator
ID="RequiredFieldValidator1"
runat="server"
ControlToValidate="txtPinCode"
ErrorMessage="Email Id
is mandatory" Text="*" ValidationGroup="Submit"></asp:RequiredFieldValidator>
<asp:ValidationSummary ID="ValidationSummary1"
runat="server"
EnableClientScript="true"
ValidationGroup="Submit"
/>
<asp:Button ID="btnSubmit"
runat="server"
Text="Submit"
ValidationGroup="Submit"
/>
