Question

我正在使用此代码生成唯一代码

public static string CreateRandomPassword()  
    {
        string _allowedChars = "1234567899999";
        Random randNum = new Random((int)DateTime.Now.Ticks); 
        char[] chars = new char[5];


        for (int i = 0; i < 5; i++)
        {
            chars[i] = _allowedChars[randNum.Next(_allowedChars.Length)];
            //No need to over complicate this, passing an integer value to Random.Next will "Return a nonnegative random number less than the specified maximum."
        }
        return new string(chars);

这用于向sql表发送条目。 ids是我输入要生成多少唯一代码的文本框

protected void Button1_Click(object sender, EventArgs e)
    {
        var sand = CreateRandomPassword();
        int num; 
        if ( int.TryParse(ids.Text,out num))
        {
            for (int i = 1; i <= num; i++)
            {

                string strcon = ConfigurationManager.ConnectionStrings["slxserv"].ToString();
                using (SqlConnection con = new SqlConnection(strcon))

                using (SqlCommand cmd = new SqlCommand("INSERT INTO passwords (password) VALUES (@password) "))
                {
                    cmd.Connection = con;
                    cmd.Parameters.AddWithValue("@password",sand);

                    con.Open();
                    cmd.ExecuteNonQuery();
                    con.Close();
                }

        }

当我尝试生成多个唯一代码时，请帮助我将数据发送到具有相同代码的sql多次。我做错了什么，请告诉我。或者可以用sql程序也请让我知道

Answer 1

您创建的密码命名为“sand”，然后在for循环中，您发送相同的密码“num”次。你可以试试这个：

    int num; 
    if ( int.TryParse(ids.Text,out num))
    {
        for (int i = 1; i <= num; i++)
        {
           var sand = CreateRandomPassword();

我正在尝试生成numaric唯一代码并将其发送到sql server

1 个答案: