deletemultikeys.aspx.cs

《圣殿祭司的ASP.NET 2.0开发详解——使用C#》光盘内容.包含了书籍所含的源代码.非常经典的一本asp.net2.0的书籍

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.Drawing;

public partial class DeleteMultiKeys : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
		if (!IsPostBack)
		{
			//txtColumn.Text = "请选择任何意一行";
			setGridViewStyle();
			setFields();
		}

		//设置SqlDataSource连接及Select命令
		sqldsEmployees.ConnectionString = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString;
		sqldsEmployees.SelectCommand = "select EmployeeID,LastName,FirstName,Title,City from Employees";
		sqldsEmployees.DeleteCommand = "delete from Employees where LastName=@LastName and FirstName=@FirstName and Title=@Title and City=@City ";
		//设置GridView数据源ID
		gviewEmployees.DataSourceID = sqldsEmployees.ID;
    }

	//设置GridView外观样式
	private void setGridViewStyle()
	{
		gviewEmployees.AutoGenerateColumns = false;
		//设置Row的键值组成，具有唯一性
		string[] KeyNames = new string[] { "LastName", "FirstName", "Title", "City" };
		gviewEmployees.DataKeyNames = KeyNames;

		//设置GridView属性
		gviewEmployees.AllowPaging = true;	//设置分页
		gviewEmployees.AllowSorting = true;	//设置排序
		gviewEmployees.Font.Size = 10;		//设置字号大小
		gviewEmployees.GridLines = GridLines.Both;	//设置网格线
		gviewEmployees.PageSize = 15;
		gviewEmployees.PagerSettings.Position = PagerPosition.TopAndBottom; //分页位置
		gviewEmployees.PagerStyle.HorizontalAlign = HorizontalAlign.Center; //分页对齐

		gviewEmployees.HeaderStyle.BackColor = Color.Tan;
		gviewEmployees.RowStyle.BackColor = Color.LightGoldenrodYellow;
		gviewEmployees.AlternatingRowStyle.BackColor = Color.PaleGoldenrod;
		gviewEmployees.HeaderStyle.ForeColor = Color.Black;
		gviewEmployees.PagerStyle.BackColor = Color.Goldenrod;
	}

	//建立及设置Fields字段
	private void setFields()
	{
		//建立命令字段
		CommandField deleteField = new CommandField();
		deleteField.ButtonType = ButtonType.Button;
		deleteField.ShowDeleteButton = true;  //显示删除按钮
		deleteField.DeleteText = "删除行";
		//deleteField.ControlStyle.BackColor = Color.LightPink;
		deleteField.ItemStyle.Wrap = false;

		TemplateField deleteTemplateField = new TemplateField();

		//建立数据绑定字段
		BoundField lastnameField = new BoundField();
		BoundField firstnameField = new BoundField();
		BoundField titleField = new BoundField();
		BoundField cityField = new BoundField();
		HyperLink myHyperLink = new HyperLink();

		lastnameField.DataField = "LastName";
		lastnameField.HeaderText = "LastName";
		lastnameField.ItemStyle.Wrap = false;

		firstnameField.DataField = "FirstName";	//指定数据源字段
		firstnameField.HeaderText = "FisrtName";	//设置字段头名称
		firstnameField.ItemStyle.Wrap = false;

		titleField.DataField = "Title";
		titleField.HeaderText = "Title";
		titleField.ItemStyle.Wrap = false;

		cityField.DataField = "City";
		cityField.HeaderText = "City";
		cityField.ItemStyle.Wrap = false;

		//将字段添加到GridView
		gviewEmployees.Columns.Add(deleteField);
		gviewEmployees.Columns.Add(lastnameField);
		gviewEmployees.Columns.Add(firstnameField);
		gviewEmployees.Columns.Add(titleField);
		gviewEmployees.Columns.Add(cityField);

	}

	//删除GridView数据行
	protected void gviewEmployee_RowDeleting(object sender, GridViewDeleteEventArgs e)
	{
		string txtEmployee = gviewEmployees.Rows[e.RowIndex].Cells[1].Text;
		if (txtEmployee != "江华")
		{
			e.Cancel = true;
			Literal txtMsg = new Literal();
			txtMsg.Text = "<script>alert('" + txtEmployee + "资料已被删除，此为模拟信息')</script>";
			Page.Controls.Add(txtMsg);
		}
	}
}