How to insert verification code label into Visual Studio web page

Sometimes in order to enhance program security, we hope to add verification codes to our web forms to prevent malicious programs from trying to attack. PHP editor Baicao will introduce to you today how to insert a verification code tag into a web form in Visual Studio, so that users can enter the verification code before submitting the form, thereby strengthening the security of registration, login and other functions. Let’s take a look at the specific operation methods below!

The overall format of the layout verification code label.

The overall height of the verification code label in the layout is 33 pixels and the width is 260 pixels.

Define the text box for entering the verification code and set it with the input attribute.

The type of the input text box is text, and the identifier is ma.

Focus events and unfocus, set the text value of the input text box to code.

Define the border, font, height and width of the verification code input text box.

Use the image tag to insert the code that displays the verification code label in the web page.

Use the alt attribute to set the display text of the verification code label. If the content is unclear, please change it.

Use the src attribute to reference the file Gain.ashx in the tool folder, which is used to generate the verification code. Click the verification code button to generate the verification code.

Set the width of the verification code label to 100 pixels and the height to 33 pixels.

Browse the web page, display the verification code label on the page, and the text box for entering the verification code. In the verification code label, the verification code is not displayed because the background code has not been set up yet.

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