我设计了regesitration表单，因为我有一个textbox = ID

问题描述

我设计注册表格，因为我有一个文本框= ID，当我怀孕时我想自动获得ID号，如果有人知道请发送代码..................

I design regesitration form in that i have one textbox=ID, when i regester i want to get ID number automatically, if any one know plz send the code............

推荐答案

string maxid = "";
string sql = "Select Top(1) ID_Receipt from Receipt ORDER BY ID_Receipt DESC";
            SqlCommand testcommand = new SqlCommand(sql, conn);
            rdr = testcommand.ExecuteReader();
            while (rdr.Read())
            {
              maxid = rdr["ID_Receipt"].ToString();
            }
            int nummaxid = Convert.toInt32(maxid);
            nummaxid++;
            textbox1.Text = nummaxid.toString();

如果您的ID有字符串，则可以使用split函数

祝你好运.请标记是否回答

if your id have string you maybe use function split

Good luck. Pls Mark if answer

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