depsrecord.cs

这是该书上的所有源代码,不错

namespace Employee_Directory
{
	
    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Data;
    using System.Data.OleDb;
    using System.Drawing;
    using System.Web;
    using System.Web.SessionState;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;

	public class DepsRecord : System.Web.UI.Page
	
    { 

//更新窗口定义控件的声名
		protected CCUtility Utility;
		
		//更新记录表单、变量等的声名
		protected System.Web.UI.WebControls.Label deps_ValidationSummary;
		protected System.Web.UI.HtmlControls.HtmlInputButton deps_insert;
		protected System.Web.UI.HtmlControls.HtmlInputButton deps_update;
		protected System.Web.UI.HtmlControls.HtmlInputButton deps_delete;
		protected System.Web.UI.HtmlControls.HtmlInputButton deps_cancel;
		protected System.Web.UI.HtmlControls.HtmlInputHidden deps_dep_id;
		protected System.Web.UI.WebControls.TextBox deps_name;
		
		//定义各表单事件保护字符串
		protected string deps_FormAction="DepsGrid.aspx?";
		protected System.Web.UI.HtmlControls.HtmlInputHidden p_deps_dep_id;

//初始化事件
	public DepsRecord()
	{
	this.Init += new System.EventHandler(Page_Init);
	}
//DepsRecord中的自定义包含控件结束

	public void ValidateNumeric(object source, ServerValidateEventArgs args) {
			try{
				Decimal temp=Decimal.Parse(args.Value);
				args.IsValid=true;
		        }catch{
				args.IsValid=false;	}
		}

//定义登录窗口显示控件过程
//初始化页面过程，创建一个Utility实例，并调用其相应的各方法
        protected void Page_Load(object sender, EventArgs e)
        {	
		Utility=new CCUtility(this);
		Utility.CheckSecurity(3);
		// 完成窗口安全验证
		if (!IsPostBack){
			
			p_deps_dep_id.Value = Utility.GetParam("dep_id");Page_Show(sender, e);
		}
	}

//页面关闭过程
	protected void Page_Unload(object sender, EventArgs e)
	{
		if(Utility!=null) Utility.DBClose();
	}

//窗口中控件定义事件处理过程
	protected void Page_Init(object sender, EventArgs e)
	{
		InitializeComponent();
	}
        private void InitializeComponent()
        {
		this.Load += new System.EventHandler(this.Page_Load);
		this.Unload += new System.EventHandler(this.Page_Unload);
deps_insert.ServerClick += new System.EventHandler (this.deps_Action);
		deps_update.ServerClick += new System.EventHandler (this.deps_Action);
		deps_delete.ServerClick += new System.EventHandler (this.deps_Action);
		deps_cancel.ServerClick += new System.EventHandler (this.deps_Action);
		
        }

//定义整体显示页面过程
        protected void Page_Show(object sender, EventArgs e)
        {
		deps_Show();
		
        }
// DepsRecord Show end
//完成表单初始化


//定义控制函数，控制按钮的的显示与否
//如，当插入记录时，应显示插入、取消按钮，而修改时应显示修改、删除、取消按钮
private bool deps_Validate(){
	bool result=true;
	deps_ValidationSummary.Text="";

	for(int i=0;i<Page.Validators.Count;i++){
		if(((System.Web.UI.WebControls.BaseValidator)Page.Validators[i]).ID.ToString().StartsWith("deps")){
			if(!Page.Validators[i].IsValid){
				deps_ValidationSummary.Text+=Page.Validators[i].ErrorMessage+"<br>";
				result=false;
			}
		}
	}

	deps_ValidationSummary.Visible=(!result);
	return result;
}

//更新记录的显示过程
void deps_Show() {
	
	bool ActionInsert=true;
	
	if (p_deps_dep_id.Value.Length > 0 ) {
		string sWhere = "";
		
		sWhere += "dep_id=" + CCUtility.ToSQL(p_deps_dep_id.Value, CCUtility.FIELD_TYPE_Number);
		
		string sSQL = "select * from deps where " + sWhere;
		OleDbDataAdapter dsCommand = new OleDbDataAdapter(sSQL, Utility.Connection);
		DataSet ds = new DataSet();
		DataRow row;

		if (dsCommand.Fill(ds, 0, 1, "deps") > 0) {
		row = ds.Tables[0].Rows[0];
				
	deps_dep_id.Value = CCUtility.GetValue(row, "dep_id");
		

	deps_name.Text = CCUtility.GetValue(row, "name");
	deps_insert.Visible=false;
		ActionInsert=false;
	}}

		if(ActionInsert){

		String pValue;

		pValue = Utility.GetParam("dep_id");deps_dep_id.Value = pValue;deps_delete.Visible=false;
	deps_update.Visible=false;

}

	}
	
//插入新记录事件代码
bool deps_insert_Click(Object Src, EventArgs E) {
		string sSQL="";
		bool bResult=deps_Validate();

		if(bResult){	
		        
			
			string p2_name=CCUtility.ToSQL(Utility.GetParam("deps_name"), CCUtility.FIELD_TYPE_Text) ;

			sSQL = "insert into deps (" +
				"name)" +
				" values (" +
				p2_name + ")";
			OleDbCommand cmd = new OleDbCommand(sSQL, Utility.Connection);
			try {
				cmd.ExecuteNonQuery();
			} catch(Exception e) {
				deps_ValidationSummary.Text += e.Message;
				deps_ValidationSummary.Visible = true;
				return false;
			}
		}
		return bResult;
	}



//更新记录事件代码
	bool deps_update_Click(Object Src, EventArgs E) {
	    string sWhere = "";
		string sSQL ="";
		
		bool bResult=deps_Validate();
		if(bResult){
		
	        if (p_deps_dep_id.Value.Length > 0) {
        	    sWhere = sWhere + "dep_id=" + CCUtility.ToSQL(p_deps_dep_id.Value, CCUtility.FIELD_TYPE_Number);
		    }
		
		if (bResult){
		
		sSQL = "update deps set " +
		"[name]=" +CCUtility.ToSQL(Utility.GetParam("deps_name"),CCUtility.FIELD_TYPE_Text) ;

		
	        sSQL = sSQL + " where " + sWhere;
		
		OleDbCommand cmd = new OleDbCommand(sSQL, Utility.Connection);
			try {
				cmd.ExecuteNonQuery();
			} catch(Exception e) {
				deps_ValidationSummary.Text += e.Message;
				deps_ValidationSummary.Visible = true;
				return false;
			}
		}

		}
		return bResult;
	}

//删除记录代码
bool deps_delete_Click(Object Src, EventArgs E) {
	string sWhere = "";
	
	if (p_deps_dep_id.Value.Length > 0) {
		sWhere += "dep_id=" + CCUtility.ToSQL(p_deps_dep_id.Value, CCUtility.FIELD_TYPE_Number);
	}
	
	string sSQL = "delete from deps where " + sWhere;
	
	OleDbCommand cmd = new OleDbCommand(sSQL, Utility.Connection);
	try {
		cmd.ExecuteNonQuery();
	} catch(Exception e) {
		deps_ValidationSummary.Text += e.Message;
		deps_ValidationSummary.Visible = true;
		return false;
	}
	return true;
}

//取消更新代码
bool deps_cancel_Click(Object Src, EventArgs E) {
	return true;
	}

//为各按钮点击事件参数函数代码
void deps_Action(Object Src, EventArgs E) {
bool bResult=true;
if(((HtmlInputButton)Src).ID.IndexOf("insert")>0) bResult=deps_insert_Click(Src,E);
if(((HtmlInputButton)Src).ID.IndexOf("update")>0) bResult=deps_update_Click(Src,E);
if(((HtmlInputButton)Src).ID.IndexOf("delete")>0) bResult=deps_delete_Click(Src,E);
if(((HtmlInputButton)Src).ID.IndexOf("cancel")>0) bResult=deps_cancel_Click(Src,E);
if(bResult)Response.Redirect(deps_FormAction+"");
}

    }
}