Multiple Id's in In clause of SQL Query C# [closed]

Answer 1

In order to get textbox value you have to code like this:-

"select * from table where id in ( "+textbox1.text+")";

But this will lead you to Sql Injection problem. So a better approach will be:-

var command = new SqlCommand("SELECT * FROM table WHERE id = @value")
{
  Connection = connection();
};

command.Parameters.AddWithValue("value", textbox1.text);
var dataReader = command.ExecuteReader();