Insert data into SQL Server from C# code

Question

I have a table student (id, name). Then I have one textbox, for entering the name, when click on submit button, it inserts the data into the databa

Answer 1

You better use parameters when you insert data.

try
{
    string sql = "insert into student(name) values (@name)";
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        using (SqlCommand cmd = new SqlCommand(sql, conn))
        {
            cmd.Parameters.AddWithValue("@name", test); // assign value to parameter 
            cmd.ExecuteNonQuery();
        }
    }
}
catch (SqlException ex)
{
    string msg = "Insert Error:";
    msg += ex.Message;
}