Textbox validation

Question

how can i validate 5 textboxes with the 5 different validation message other than usage of if else if condition in a button click event using C#?

Rajneesh Chaubey · Answer

Here I am assuming some input fields for you. "text/javascript" > function register_onclick() { var controlId = document.getElementById( " " ); if (controlId.value == "" ) { alert( 'Please enter the Dr Name' ); return false ; } var m = document.getElementById( " " ); if (m.value == "" ) { alert( 'Please enter the Mobile No' ); return false ; } var email = document.getElementById( " " ); if (document.getElementById( " " ).value == "" ) { alert( 'Please enter the Email' ); return false ; } var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/; if (!filter.test(email.value)) { alert( 'Please provide a valid email address' ); email.focus; email.style.borderColor = "red" ; //email.value = "please enter proper mail address"; " " ).style.display = "block" ; email.focus;--%> return false ; } if (document.getElementById( " " ).value == "" ) { alert( 'Please enter the Speciality' ); return false ; } if (document.getElementById( " " ).value == "Select Region" || document.getElementById( " " ).value == "" ) { alert( 'Please enter the Region' ); return false ; } if (document.getElementById( " " ).value == "Select Activity" || document.getElementById( " " ).value == "" ) { alert( 'Please enter the Activity' ); return false ; } var r = document.getElementById( "ddl1" ); var a = document.getElementById( "ddl2" ); if (r.selectedIndex == 0) { alert( 'Please select proper Region' ); return false ; } if (a.selectedIndex == 0) { alert( 'Please select proper Activity' ); return false ; } return true ; } Now the button "register" Text= "Register" OnClientClick= "return register_onclick()" OnClick= "register_ServerClick" runat= "server" /> Now specify you codebehind method register_ServerClick . So when user click it will first check the clientside script after that if method returns true then it will execute you backend method.

Bharathi Raja · Answer

http://www.c-sharpcorner.com/article/textbox-validation-client-side-and-server-side-in-asp-net-webform/

chandravathi s · Answer

Instead of alert('messeage'); I have written Lbl_Message.Test = "message"; Here Lbl_Message is if of the lable. But I am not getting the message what I have written

Rajneesh Chaubey · Answer

Hi @chandravathi, Surely, you can do this. Just get the id of label and display there.

chandravathi s · Answer

thank you

chandravathi s · Answer

Thank you for the reply. Instead of getting a popup message (alert. Message) is it possible to get message in a labels which is placed near to the text boxes?