Question

在我的约会表中，我有aDate，aTime，aContact，aHeight，aWeight，patientID，mcID和aStatus字段。 aDate，aTime，aContact，aHeight，aWeight，patientID，mcID值将通过文本框输入并插入到数据库中，但只有aStatus字段我希望它自动将这个名为（等待）aStatus字段的值插入约会表中单击按钮，如何为aStatus执行此操作？

protected void btnCreate_Click(object sender, EventArgs e)
{
    if (Page.IsValid)
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["sacpConnectionString"].ConnectionString))
        {
            try
            {
                SqlCommand cmd = new SqlCommand();
                Guid guid;
                guid = Guid.NewGuid();
                string sql = "INSERT INTO appointment (aDate, aTime, aContact, aHeight, aWeight, patientID, mcID)";
                sql += "VALUES (@aDate, @aTime, @aContact, @aHeight, @aWeight, @patientID, @mcID)";
                cmd.Parameters.AddWithValue("@aDate", txtDate.Value);
                cmd.Parameters.AddWithValue("@aTime", txtTime.Value);
                cmd.Parameters.AddWithValue("@aContact", txtContact.Value.Trim());
                cmd.Parameters.AddWithValue("@aHeight", txtHeight.Value.Trim());
                cmd.Parameters.AddWithValue("@aWeight", txtWeight.Value.Trim());
                cmd.Parameters.AddWithValue("@patientID", txtpatientID.Value.Trim());
                cmd.Parameters.AddWithValue("@mcID", txtmcID.Value.Trim());

                cmd.Connection = con;
                cmd.CommandText = sql;
                con.Open();

                cmd.ExecuteNonQuery();

               // Session.Add("Username", txtFirstName.Value);
              //  Session.Add("Password", txtContact.Value);
              //  FormsAuthentication.SetAuthCookie(txtFirstName.Value, true);
                Response.Redirect("../index.aspx");

            }

            finally
            {
                con.Close();
            }


        }
    }
}

Answer 1

如果你想插入一些integer值（例如：ID），每个新记录都会增加，你可以使用IDENTITY列，但在这种情况下，你要插入每条记录的默认string值，以便您可以在INSERT INTO语句中直接指定它。

试试这个：

String strStatus="waiting";
string sql = "INSERT INTO appointment (aStatus,aDate, aTime, aContact, aHeight, aWeight, patientID, mcID)";
                sql += "VALUES (@aStatus,@aDate, @aTime, @aContact, @aHeight, @aWeight, @patientID, @mcID)";
cmd.Parameters.AddWithValue("@aStatus", strStatus);
cmd.Parameters.AddWithValue("@aDate", txtDate.Value);
cmd.Parameters.AddWithValue("@aTime", txtTime.Value);
cmd.Parameters.AddWithValue("@aContact", txtContact.Value.Trim());
cmd.Parameters.AddWithValue("@aHeight", txtHeight.Value.Trim());
cmd.Parameters.AddWithValue("@aWeight", txtWeight.Value.Trim());
cmd.Parameters.AddWithValue("@patientID", txtpatientID.Value.Trim());
cmd.Parameters.AddWithValue("@mcID", txtmcID.Value.Trim());

Answer 2

您可以尝试通过执行以下查询来设置数据库中列的默认值：

ALTER TABLE appointment
ALTER aStatus SET DEFAULT '(waiting)'

Answer 3

SQL字符串

    string sql = "INSERT INTO appointment (aDate, aTime, aContact, aHeight, aWeight, patientID, mcID, aStatus)";

你的价值观

    sql += "VALUES (@aDate, @aTime, @aContact, @aHeight, @aWeight, @patientID, @mcID, 'waiting')";

Answer 4

这是解决方案，如Sudhakar Tillapudi，但没有添加参数：

String strStatus="waiting";
string sql = "INSERT INTO appointment (aStatus,aDate, aTime, aContact, aHeight, aWeight, patientID, mcID)";
sql += "VALUES ('waiting',@aDate, @aTime, @aContact, @aHeight, @aWeight, @patientID, @mcID)";
cmd.Parameters.AddWithValue("@aDate", txtDate.Value);
cmd.Parameters.AddWithValue("@aTime", txtTime.Value);
cmd.Parameters.AddWithValue("@aContact", txtContact.Value.Trim());
cmd.Parameters.AddWithValue("@aHeight", txtHeight.Value.Trim());
cmd.Parameters.AddWithValue("@aWeight", txtWeight.Value.Trim());
cmd.Parameters.AddWithValue("@patientID", txtpatientID.Value.Trim());
cmd.Parameters.AddWithValue("@mcID", txtmcID.Value.Trim());

如何在单击按钮时将字段的硬编码值插入数据库？

4 个答案: