CompareValidator Example: How to use CompareValidator in Asp.Net

CompareValidator Example:

Introduction:

In my previous articles i explained Validation Controls in Asp.Net, RangeValidatorControlExample, RequiredFieldValidator Example and Now i will explain how to use CompareValidator to Compare password and confirmpassword or two values in asp.net.

Description:

CompareValidator Control is used to compare two values. The value to compare can be either a value of another control or a constant specified. There are predefined data types that can be compared like string, integer etc.

1).  Add a compareValidator control to the page and set the properties ControlToValidate, ErrorMessage,Text,Display.

2). Set the value to Compare by setting the properties like ValueToCompare, ControlToValidate, Type and Operator.

Age Validation using CompareValidator Control:

<asp:TextBox ID="txtAge" runat="server" ontextchanged="TextBox1_TextChanged" style="z-index: 1; left: 10px; top: 15px; position: absolute"></asp:TextBox> <asp:CompareValidator ID="CompareValidator1" runat="server" ControlToCompare="0" ControlToValidate="txtAge" Display="Dynamic" ErrorMessage="Please enter a whole number zero or greater" Operator="GreaterThanEqual" SetFocusOnError="True" style="z-index: 1; left: 155px; top: 15px; position: absolute" Type="Integer"></asp:CompareValidator>

Comparing two passwords using CompareValidator Control:

Username: <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br /> Password:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox> <asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="Failed Validation" ControlToCompare="TextBox3" ControlToValidate="TextBox2" ForeColor="Red"></asp:CompareValidator> <br /> ConfirmPassword:<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox> <br /> <br /> <asp:Button ID="Button1" runat="server" Text="Submit" />  

Conclusion:

 

I hope you got an idea about how to use CompareValidator in Asp.Net Using Age and Phone Number validations.