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How to read values in ASP from jQuery

How to read values in ASP from jQuery

Guest User

9y752

$(function () {
$("#button").click(function () {
alert("You clicked Submit button");
$.ajax({
type: "POST",
url: "Insert.aspx",
data: "{'StudentId': 'B1111' ,'StudentName': 'Likhit'}"
});
$("#studenttable").append("B1111Likhit");
});

Above is my jQuery function.

sid = Request.QueryString["StudentId"].ToString();

This is how I am trying to retrieve data from function. But it's not working."

An exception of type 'System.NullReferenceException' occurred in App_Web_kqkv5dqo.dll but was not handled in user code

Additional information: Object reference not set to an instance of an object.

"

Help me with suggestions.

2 Replies

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Dharmraj Thakur9y ago
You are calling post method and you have not passed any querystring in url, and you are trying get query string in c#...
So you cannot get query string here....
do like this...
postMethod(string StudentId, string StudentName)
{
}
Ramesh Palanivel9y ago
HI Mohit,

Kindly send the full screen shot of your index page and javascript page.

You cannot get the student id value using query string method, because you are not posting the data using query string. You are posting the data using ajax method.

To get the student id value in index page , you can create a method with parameter student id ,student name....

for more information , kindly refer the below URL.

https://www.aspsnippets.com/Articles/Calling-ASPNet-WebMethod-using-jQuery-AJAX.aspx