Query String in asp.net core 3.1(Input string was not in a correct format.)

Question

        [Route("/p/m")]
        [HttpPost]
        public IActionResult Add(Table t)
        {
            int id = int.Parse(HttpContext.Request.Query["Id"].ToString());
        }

and this my url

/p/m?Id=37

i try to get query string to my controller from url in asp.net core using this code but she give me this error

(Input string was not in a correct format.)
       61. int id = int.Parse(HttpContext.Request.Query["Id"].ToString());

The error is so descriptive, Query string is empty for the Id or it contains some extra character that is not of type int. — Jamshaid K., Jan 19 '21 at 08:08
Can you get value from the Entity classes? The controller IActionResults should already have the values in the c# Entity classes. — jdweng, Jan 19 '21 at 08:12

score 0 · Answer 1 · answered Jan 19 '21 at 08:12

0

If you are not validating explicitly for numbers in the text field, in any case its better to use

int result=0;
if(int.TryParse(textBox1.Text,out result))

Now if the result is success then you can proceed with your calculations.

Input string was not in a correct format

answered Jan 19 '21 at 08:12

MD. RAKIB HASAN

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return 0 but my query string value is not 0 – Marco_Paoulo Jan 19 '21 at 08:27

Query String in asp.net core 3.1(Input string was not in a correct format.)

1 Answers1