updatedepartment.aspx.cs

来自「《精通ASP.NET2.0网络应用系统开发》书中的源码」· CS 代码 · 共 86 行

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 StudentManager;
using System.Data.SqlClient;

public partial class UpdateDepartment : System.Web.UI.Page
{
	int nDepartmentID = -1;

	protected void Page_Load(object sender,EventArgs e)
	{
		///获取ID的值
		if (Request.Params["DepartmentID"] != null)
		{
			nDepartmentID = Int32.Parse(Request.Params["DepartmentID"].ToString());
		}

		if (!Page.IsPostBack)
		{
			if (nDepartmentID > -1)
			{
				///绑定控件的数据
				BindDepartmentData(nDepartmentID);
			}
		}

		///设置更新按钮的可用性
		UpdateBtn.Enabled = nDepartmentID <= -1 ? false : true;
	}

	private void BindDepartmentData(int nDepartmentID)
	{
		///获取数据
		Department department = new Department();
		SqlDataReader recd = department.GetSingleDepartment(nDepartmentID);

		///读取数据
		if (recd.Read())
		{
			///显示数据
			Desn.Text = recd["Desn"].ToString();
			Body.Text = recd["Body"].ToString();
		}
		recd.Close();          ///关闭数据源
	}

	protected void UpdateBtn_Click(object sender,EventArgs e)
	{
		///如果页面输入内容合法
		if (Page.IsValid == true)
		{
			///定义类
			StudentManager.Department department = new StudentManager.Department();
			try
			{
				///修改
				department.UpdateDepartment(nDepartmentID,Desn.Text.Trim(),Body.Text);

				///显示操作结果信息
				Response.Write("<script>window.alert('" + ASPNET2System.OPERATIONUPDATESUCCESSMESSAGE + "')</script>");
			}
			catch (Exception ex)
			{
				///显示修改操作中的失败、错误信息
				Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
					+ ASPNET2System.RedirectErrorUrl(Request.RawUrl)
					+ "&ErrorMessage=" + ex.Message.Replace("\n"," "));
			}
		}
	}

	protected void ReturnBtn_Click(object sender,EventArgs e)
	{
		///返回管理页面
		Response.Redirect("~/DesktopModules/Department/DepartmentManage.aspx");
	}	
}