How to pass int parameters in Sql commandText

it should be like this,

cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = ("insert_questions") ;
cmd.Parameters.AddWithValue("@value", valueHere);
cmd.Parameters.AddWithValue("@value2", valueHere);

note that @value and @value2 are the parameters declared in your stored procedure.

Try this:

        cmd.CommandText = ("insert_questions @store_result, @store_title, @store_des");
        cmd.Parameters.AddWithValue("@store_result", store_result);
        cmd.Parameters.AddWithValue("@store_title", store_title);
        cmd.Parameters.AddWithValue("@store_des", store_des);

the correct way to go is

using(var connection = new SqlConnection(ConnectionString))
{
    connection.Open();
    using(var command = new SqlCommand("SELECT * FROM Table WHERE ID=@someID",connection))
    {
        command.Parameters.AddWithValue("someID",1234);
        var r = command.ExecuteQuery();
    }
}

this means it works even with text queries. it's even easier with stored procedures - instead of sql query you just provide stored procedure name:

using(var connection = new SqlConnection(ConnectionString))
{
    connection.Open();
    using(var command = new SqlCommand("insert_sproc",connection))
    {
        command.CommandType = CommandType.StoredProcedure;
        command.Parameters.AddWithValue("someID",1234);
        var r = command.ExecuteQuery();
    }
}