SQL - MVC - Insert into 2 tables - mysql

Question

im working in mvc and use sql command to insert data to my
database.
what i try to do is insert into 2 tables which one of them
have the foreign key from the other.
how can i build my sql query to make a condition on insert
into the table Image, insert the id in the foreignkey column
in the table Content.
using (SqlConnection cn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString))
{
SqlCommand cmd;
System.Text.StringBuilder sql = new System.Text.StringBuilder();
sql.Append("insert into Image(FileName)");
sql.Append("values (#FileName)");
SqlCommand cmd2;
System.Text.StringBuilder sql2 = new System.Text.StringBuilder();
sql.Append("insert into Code(Html,JsCode,Id_Img)");
sql.Append("values (#Html, #JsCode, #Id_Img)");
cn.Open();
cmd = new SqlCommand(sql.ToString(), cn);
cmd.Parameters.Add("#FileName", SqlDbType.VarChar).Value = myfilename;
int FileId = (int)cmd.ExecuteScalar();
cmd2 = new SqlCommand(sql2.ToString(), cn);
cmd2.Parameters.Add("#Html", SqlDbType.VarChar).Value = mydiv;
cmd2.Parameters.Add("#JsCode", SqlDbType.VarChar).Value = DBNull.Value;
cmd2.Parameters.Add("#Id_Img", SqlDbType.Int).Value = FileId;
cmd2.ExecuteNonQuery();
cn.Close();
}

Answer 1

I think you can use ExecuteScalar() instead ExecuteNonQuery() to get the Scope_identity() value from the server like below and add that FileId to the second query.
using (SqlConnection cn = new SqlConnection("your_connection_string"))
{
string sql1 = "insert into Image(FileName) values (#FileName); " +
"SELECT CAST(scope_identity() AS int)";
string sql2 = "insert into Code(Html,JsCode,Id_Img) values (#Html, #JsCode, #Id_Img)";
int FileId = 0;
using (SqlCommand cmd = new SqlCommand(sql1,cn))
{
cmd.Parameters.AddWithValue("#fileName", myfilename);
cn.Open();
FileId= (int)cmd.ExecuteScalar();
}
}