[Sample of Apr 30th] Run scripts after server side validation in ASP.NET
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Sample Downloads: https://code.msdn.microsoft.com/AddDynamicallyControlstoGri-d74fe84f
Today’s sample demonstrates how to run client script after server side validation. Normally, client script is placed to validate user inputs at client side. After this validation is successful, server side validation is then performed. But sometimes, after server side validation, we'll need to run client script to perform tasks that only achievable by javascript, for example, showing a dialog box, scrolling the page to a designated place, etc. .
The sample was written by our star sample writer: Arwind Gao.
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Introduction
The sample code demonstrates how to run client script after server side validation. Normally, client script is placed to validate user inputs at client side. After this validation is successful, server side validation is then performed. But sometimes, after server side validation, we'll need to run client script to perform tasks that only achievable by javascript, for example, showing a dialog box, scrolling the page to a designated place, etc.
Running the Sample
Please follow these demonstration steps below.
Step 1: Open the CSASPNETRunScriptsAfterServerSideValidation.sln.
Step 2: Right click Default.aspx and choose "View in Browser".
Step 3: Enter an email in the textbox and click the button to validate.
Using the Code
Step 1. Create a C# "ASP.NET Empty Web Application" in Visual Studio 2010 or Visual Web Developer 2010. Name it as "CSASPNETRunScriptsAfterServerSideValidation".
Step 2. Add a TextBox Control, a Button, a RequiredFieldValidator and a CustomValidator to the Dafault page.The add a div in the bottom of the form for run scripts after server side validation.
Step 3. In the Page_Load event, Page object gets checked to see if the value of the input element is valid. If the value is valid, then register a script to run at client side. This script is used to perform client side tasks.
First, get the value of the input.
Second, declare the pattern to validate the email.
Finally, according to the results of the verification decision as to whether to register a script to run at client side or not.
Step 4. Build the application and you can debug it.