meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>修改学员</title> <style type="text/css"> #tbList { border:1px solid #0094ff; border-collapse:collapse; 300px; margin:50px auto; } #tbList th,td{ border:1px solid #0094ff; padding:5px; } </style> </head> <body> <form method="post" action="06StuModify.aspx"> <table id="tbList"> <tr> <td>姓名：</td> <td><input type="text" id="txtName" name="txtName" value="<%=model.Name %>" /></td> </tr> <tr> <td>所在班级：</td> <td><select name="selClass"><%=sbOpts.ToString() %></select></td> </tr> <tr> <td>性别：</td> <td> <input type="radio" name="sex" <%=GetChecked(model.Gender,true) %> value="男"/>男 <input type="radio" name="sex" <%=GetChecked(model.Gender,false) %> value="女"/>女 </td> </tr> <tr> <td colspan="2"> <input type="submit" value="确定" /> <input type="button" id="btnCancel" value="取消" onclick="window.location = '01List.ashx'" /> </td> </tr> </table> <input type="hidden" name="txtId" value="<%=model.Id %>" /> </form> </body> </html>
后台代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using WebHelper; namespace AspxWebForm { public partial class _06StuModify : System.Web.UI.Page { BLL.Students bllStu = new BLL.Students(); protected System.Text.StringBuilder sbOpts = new System.Text.StringBuilder();//装 班级下拉框的 html代码 protected MODEL.Students model = null; protected void Page_Load(object sender, EventArgs e) { //业务一、get过来的时候，根据id展示要修改的数据 if (Request.HttpMethod.ToLower() == "get") { ShowData(); } else//业务二、post过来的时候，获取新数据并保存到数据库 { DoModify(); } } #region 1.0 生成 班级下拉框 选项 html字符串 +void LoadClassesOption(int stuCId) /// <summary> /// 生成 班级下拉框 选项 html字符串 /// </summary> /// <param name="stuCId"></param> public void LoadClassesOption(int stuCId) { //创建 班级 业务层对象 BLL.Classes bllClasss = new BLL.Classes(); IList<MODEL.Classes> listClass = bllClasss.GetList(false); //遍历生成班级下拉框 html foreach (MODEL.Classes m in listClass) { //在生成时候，判断 循环的班级 的id是否 和 参数一样，如果一样，则将这个 option 设置为选中状态 selected sbOpts.Append("<option " + (stuCId == m.CID ? "selected" : "") + " value='" + m.CID + "'>" + m.CName + "</option>"); } } #endregion #region 2.0 根据 当前学员的性别 和 单选按钮 返回 选中状态 +string GetChecked(string sex, bool isBoy) /// <summary> /// 根据 当前学员的性别 和 单选按钮 返回 选中状态 /// </summary> /// <param name="sex"></param> /// <param name="isBoy"></param> /// <returns></returns> public string GetChecked(string sex, bool isBoy) { return isBoy ? (sex == "男" ? "checked" : "")//如果是 男 单选按钮，则 如果学生是男 则 返回 checked,否则返回 "" : (sex == "女" ? "checked" : "");//如果是 女 单选按钮，则 如果学生是女 则 返回 checked,否则返回 "" } #endregion #region 3.0展示要修改的数据 -void ShowData() /// <summary> /// 3.0展示要修改的数据 /// </summary> private void ShowData() { string strId = Request.QueryString["id"]; if (CommonHelper.IsNum(strId)) { model = bllStu.GetModel(int.Parse(strId)); //生成 班级下拉框 选项 html字符串 LoadClassesOption(model.CId); } else { CommonHelper.WriteJs("修改失败~！如果您是美女，请联系管理员~~~qq:111111", "05StuList.aspx"); Response.End(); } } #endregion #region 4.0 执行修改 -void DoModify() /// <summary> /// 执行修改 /// </summary> private void DoModify() { //验证用户提交的数据 if (CommonHelper.IsNum(Request.Form["txtId"]) && !string.IsNullOrEmpty(Request.Form["sex"].Trim()) && CommonHelper.IsNum(Request.Form["selClass"].Trim())) { //接收提交的数据 MODEL.Students stuModel = new MODEL.Students(); stuModel.Id = Convert.ToInt32(Request.Form["txtId"]); stuModel.CId = Convert.ToInt32(Request.Form["selClass"]); stuModel.Gender = Request.Form["sex"]; stuModel.Name = Request.Form["txtName"]; //保存到数据库 if (bllStu.Update(stuModel)) { CommonHelper.WriteJs("修改成功~~", "05StuList.aspx"); } else { CommonHelper.WriteJs("修改失败~~", "06StuModify.aspx?id=" + Request.Form["txtId"]); } } else { CommonHelper.WriteJs("您是否恶意修改了参数~~！我报警抓你！", "05StuList.aspx"); } Response.End();//结束输出，不生成前台页面代码 } #endregion } }
修改业务层BLL.Student
public bool Update(MODEL.Students model) { return dal.Update(model) > 0; }
修改数据层DAL.Students
#region 08.修改 +int Update(MODEL.Students model) /// <summary> /// 修改 /// </summary> /// <param name="model">数据实体对象</param> /// <returns>修改成功的行数</returns> public int Update(MODEL.Students model) { int res = -2; StringBuilder strSql = new StringBuilder(); strSql.Append("update Students set "); strSql.Append("CId=@CId,"); strSql.Append("Name=@Name,"); strSql.Append("Gender=@Gender"); strSql.Append(" where Id=@Id "); SqlParameter[] parameters = { new SqlParameter("@Id", SqlDbType.Int,4), new SqlParameter("@CId", SqlDbType.Int,4), new SqlParameter("@Name", SqlDbType.VarChar,50), new SqlParameter("@Gender", SqlDbType.VarChar,1)}; parameters[0].Value = model.Id; parameters[1].Value = model.CId; parameters[2].Value = model.Name; parameters[3].Value = model.Gender; try { res = DbHelperSQL.ExcuteNonQuery(strSql.ToString(), parameters); } catch (Exception ex) { throw ex; } return res; }