Question

I have an insert query to execute from within a C# against a SQL Server database.

The column I am inserting to is of type nvarchar.

the data I am inserting to that column is non-english.

Is it sufficient for me to use AddWithValue in order to pass the non-english data to the server? like this example:

string dogName = "עברית";
using (SqlConnection connection = new SqlConnection(connectionString))
{
    connection.Open();
    using (SqlCommand command = new SqlCommand("INSERT INTO Dogs1(Name) VALUES @Name", connection))
    {
    command.Parameters.AddWithValue("Name", dogName);
    command.ExecuteNonQuery();
    }
}

Or must I use the N prefix to declare it unicode? like it says so here.

Answer 1

If I am understanding the question correctly, you can explicitly set the SqlCommand parameter to be a specific data type. You will be able to set it to be nvarchar as shown by the following link: http://msdn.microsoft.com/en-us/library/yy6y35y8.aspx

This below code snippet is taken directly from MSDN:

SqlParameter parameter = new SqlParameter();
parameter.ParameterName = "@CategoryName";
parameter.SqlDbType = SqlDbType.NVarChar;
parameter.Direction = ParameterDirection.Input;
parameter.Value = categoryName;

This uses an explicitly created SqlParameter instance, but it is the same idea by indexing the SqlParameterCollection of the SqlCommand instance.