In this post we will discuss how we can validate an URL (both http and https) using regular expression validator in Asp.net. Also you can check out my previous posts on:
- Difference between web application and web site in Asp.Net
- File upload and thumbnail creation in Asp.Net
- JavaScript Functions example
Through regular expression we can validate an internet url address. The validation expression for this is:
"http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"
This will validate both http and https. Below is the full code:
.aspx code:
If you will not put a valid url then the error will come like below:
- Difference between web application and web site in Asp.Net
- File upload and thumbnail creation in Asp.Net
- JavaScript Functions example
Through regular expression we can validate an internet url address. The validation expression for this is:
"http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"
This will validate both http and https. Below is the full code:
.aspx code:
<div>
Enter URL:
<asp:TextBox ID="txtURL" runat="server"></asp:TextBox><asp:RegularExpressionValidator
ID="RegularExpressionValidator1" runat="server"
ControlToValidate="txtURL"
ErrorMessage="Enter
a valid URL"
ForeColor="Red" ValidationExpression="http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"></asp:RegularExpressionValidator>
<br />
<asp:Button ID="btnSubmitURL" runat="server" Text="Submit URL" />
</div>If you will not put a valid url then the error will come like below:
