selectioncode.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 SelectionCode : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
		if (!IsPostBack)
		{
			setGridViewStyle();
			setFields();
		}

		//设置SqlDataSource连接及Select命令
		sqlDS.ConnectionString = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString;
		sqlDS.SelectCommand = "select EmployeeID,LastName,City,Address from Employees";
		//设置GridView数据源ID
		gviewEmployees.DataSourceID = sqlDS.ID;
    }

	//设置GridView外观样式
	private void setGridViewStyle()
	{
		gviewEmployees.AutoGenerateColumns = false;
		string[] KeyNames = new string[] { "EmployeeID" };
		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 = 10;
		//非同步Callback模式
		gviewEmployees.EnableSortingAndPagingCallbacks = false;
		//分页位置
		gviewEmployees.PagerSettings.Position = PagerPosition.TopAndBottom;
		//分页对齐
		gviewEmployees.PagerStyle.HorizontalAlign = HorizontalAlign.Center; 

		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;

		//设置选择行背景颜色
		gviewEmployees.SelectedRowStyle.BackColor = Color.LightBlue;
	}

	//创建及设置Fields字段
	private void setFields()
	{
		//创建命令字段
		CommandField selectField = new CommandField();
		selectField.ButtonType = ButtonType.Link;
		selectField.ShowSelectButton = true;	//显示选择按钮
		selectField.SelectText = "选择行";
		selectField.ItemStyle.Wrap = false;
		//创建数据绑定字段
		BoundField employeeidField = new BoundField();
		BoundField lastnameField = new BoundField();
		BoundField cityField = new BoundField();
		BoundField addressField = new BoundField();


		employeeidField.DataField = "EmployeeID";	//指定数据源字段
		employeeidField.HeaderText = "EmployeeID";	//设置字段头名称
		//employeeidField.SortExpression = "EmployeeID";	//指定排序字段名称
		employeeidField.ItemStyle.Wrap = false;
		employeeidField.ItemStyle.HorizontalAlign = HorizontalAlign.Center;
		lastnameField.DataField = "LastName";
		lastnameField.HeaderText = "LastName";
		//lastnameField.SortExpression = "LastName";
		lastnameField.ItemStyle.Wrap = false;
		cityField.DataField = "City";
		cityField.HeaderText = "City";
		//cityField.SortExpression = "City";
		cityField.ItemStyle.Wrap = false;
		addressField.DataField = "Address";
		addressField.HeaderText = "Address";
		addressField.ItemStyle.Wrap = false;
		//将字段添加到GridView
		gviewEmployees.Columns.Add(selectField);
		gviewEmployees.Columns.Add(employeeidField);
		gviewEmployees.Columns.Add(lastnameField);
		gviewEmployees.Columns.Add(cityField);
		gviewEmployees.Columns.Add(addressField);

		cbxlistSortColumns.RepeatDirection = RepeatDirection.Horizontal;

		//将GridView字段Field加入到CheckBoxList项目
		int i = 0;
		foreach (DataControlField field in gviewEmployees.Columns)
		{
			if (!String.IsNullOrEmpty(field.HeaderText))
			{
				cbxlistSortColumns.Items.Add(new ListItem(field.HeaderText, i.ToString()));
			}
			i++;
		}
	}


	protected void gviewEmployee_Sorted(object sender, EventArgs e)
	{
		switch (gviewEmployees.SortDirection)
		{
			//设置升降幂外观样式
			case SortDirection.Ascending:
				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;
				gviewEmployees.SelectedRowStyle.BackColor = Color.LightBlue;
				break;
			//设置升降幂外观样式
			case SortDirection.Descending:
				gviewEmployees.HeaderStyle.BackColor = Color.MidnightBlue;
				gviewEmployees.RowStyle.BackColor = Color.LightBlue;
				gviewEmployees.AlternatingRowStyle.BackColor = Color.Lavender;
				gviewEmployees.HeaderStyle.ForeColor = Color.White;
				gviewEmployees.PagerStyle.BackColor = Color.LightPink;
				gviewEmployees.SelectedRowStyle.BackColor = Color.LightPink;
				break;
		}

	}

	protected void gviewEmployee_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
	{
		Label txtMsg = new Label();
		txtMsg.ForeColor = Color.Blue;
		txtMsg.Text = "您选择的行是第 " + (e.NewSelectedIndex + 1) + " 行，资料明细如下：<BR>";
		//您也可以用gviewEmployee.SelectedIndex来取代e.NewSelectedIndex + 1
		//txtMsg.Text = "您选择的行是第 " + (gviewEmployee.SelectedIndex) + " 行，资料明细如下：<BR>";
		for (int i=1;i<gviewEmployees.Columns.Count;i++)
		{
			txtMsg.Text += gviewEmployees.Columns[i].HeaderText + "：" + gviewEmployees.Rows[e.NewSelectedIndex].Cells[i].Text + "，";
		}

		Page.Controls.Add(txtMsg);

	}

	protected void cbxlistSortColumns_SelectedIndexChanged(object sender, EventArgs e)
	{
		for (int i = 0; i <= cbxlistSortColumns.Items.Count - 1; i++)
		{
			int index = Convert.ToInt16(cbxlistSortColumns.Items[i].Value);
			if (cbxlistSortColumns.Items[i].Selected == true)
			{
				//设置排序字段名称
				gviewEmployees.Columns[index].SortExpression = cbxlistSortColumns.Items[i].Text;
			}
			else
			{
				//取消排序
				gviewEmployees.Columns[index].SortExpression = null;
			}
		}
	}
}