st_addteacher.aspx.cs

学生管理系统。C#开发。偏重与数据库的应用。

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class ST_addteacher : System.Web.UI.Page
{
    SqlConnection st_conn;
    protected void Page_Load(object sender,EventArgs e)
    {
        // 在此处放置用户代码以初始化页面
        string st_connstr = ConfigurationManager.AppSettings["st_dbconn"];
        st_conn = new SqlConnection(st_connstr);
        st_conn.Open();
    }
    private void st_cv_id_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
    {
        SqlCommand st_comm = new SqlCommand("select * from ST_teacher where ST_Teacher_id=@Teacher_id", st_conn);
        st_comm.Parameters.Add("@Teacher_id", SqlDbType.VarChar, 50);
        st_comm.Parameters["@Teacher_id"].Value = st_tbx_id.Text;
        SqlDataReader dr = st_comm.ExecuteReader();
        if (dr.Read())
        {
            args.IsValid = false;
        }
        else
        {
            args.IsValid = true;
        }
        st_conn.Close();

    }
    protected void st_btn_add_Click(object sender, EventArgs e)
    {
        SqlCommand st_comm = new SqlCommand("insert_teacher_1", st_conn);
        st_comm.CommandType = CommandType.StoredProcedure;
        st_comm.Parameters.Add(new SqlParameter("@Teacher_id", SqlDbType.VarChar, 50));
        st_comm.Parameters["@Teacher_id"].Value = st_tbx_id.Text;
        st_comm.Parameters.Add(new SqlParameter("@Teacher_name", SqlDbType.VarChar, 50));
        st_comm.Parameters["@Teacher_name"].Value = st_tbx_name.Text;
        st_comm.Parameters.Add(new SqlParameter("@Teacher_college", SqlDbType.VarChar, 50));
        st_comm.Parameters["@Teacher_college"].Value = st_ddl_college.SelectedItem.Text;
        st_comm.Connection.Open();
        try
        {
            st_comm.ExecuteNonQuery();
            Response.Redirect("ST_teacher.aspx");

        }
        catch (SqlException)
        {
            st_lbl_note.Text = "添加失败";
            st_lbl_note.Style["color"] = "red";
        }
        st_comm.Connection.Close();
    }
}