edituser.aspx.cs

通过对现在流行的各种销售管理软件的分析

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace SellManageJane
{
	/// <summary>
	/// EditUser 的摘要说明。
	/// </summary>
	public class EditUser : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.TextBox TxtKey;
		protected System.Web.UI.WebControls.DataGrid DataGridUserInfo;
		SqlConnection conn;
		SqlDataAdapter ada;
		SqlCommand cmd;
		protected System.Web.UI.HtmlControls.HtmlInputButton Reset1;
		DataSet ds;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			conn = new SqlConnection(ConfigurationSettings.AppSettings["connStr"].ToString());
			if(!Page.IsPostBack)
			{
				BindGrid();
				DropDownList1.Items.Insert(0,new ListItem("任意条件","*"));
			}

		}
		private void BindGrid()
		{
			ada = new SqlDataAdapter("select * from Admin",conn);
			ds = new DataSet();
			ada.Fill(ds,"Admin");
			this.DataGridUserInfo.DataSource = ds.Tables["Admin"].DefaultView;
			this.DataGridUserInfo.DataKeyField = "id";
			this.DataBind();
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.DataGridUserInfo.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGridUserInfo_PageIndexChanged);
			this.DataGridUserInfo.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGridUserInfo_CancelCommand);
			this.DataGridUserInfo.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGridUserInfo_EditCommand);
			this.DataGridUserInfo.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGridUserInfo_UpdateCommand);
			this.DataGridUserInfo.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGridUserInfo_DeleteCommand);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void DataGridUserInfo_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			this.DataGridUserInfo.CurrentPageIndex = e.NewPageIndex;
			BindGrid();
		}

		private void DataGridUserInfo_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			this.DataGridUserInfo.EditItemIndex = -1;
			BindGrid();
		}

		private void DataGridUserInfo_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			this.DataGridUserInfo.EditItemIndex = e.Item.ItemIndex;
			BindGrid();
		}

		private void DataGridUserInfo_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			try
			{
				cmd = new SqlCommand("delete from Admin where id=@id",conn);
				cmd.Parameters.Add("@id",SqlDbType.Int);
				cmd.Parameters["@id"].Value = int.Parse(this.DataGridUserInfo.DataKeys[e.Item.ItemIndex].ToString());
				cmd.Connection.Open();
				cmd.ExecuteNonQuery();
				cmd.Connection.Close();
				this.BindGrid();
			}
			catch(Exception ex)
			{
				//Response.Write(ex.Message);
				string msg = ex.Message.ToString();
				RegisterStartupScript("errmsg","<script>alert('删除失败，DELETE 语句与 COLUMN REFERENCE 约束 FK__Sale__customerId__023D5A04 冲突。该冲突发生于数据库 SellManage，表 Sale, column customerId。语句已终止。');</script>");
			}
		}

		private void DataGridUserInfo_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			try
			{
				cmd = new SqlCommand("update Admin set userName=@userName,passWord=@passWord,type=@type,regDate=@regDate where Id=@Id",conn);
			
				cmd.Parameters.Add("@id",SqlDbType.Int);
				cmd.Parameters.Add("@userName",SqlDbType.VarChar,20);
				cmd.Parameters.Add("@passWord",SqlDbType.VarChar,32);
				cmd.Parameters.Add("@type",SqlDbType.VarChar,20);
				cmd.Parameters.Add("@regDate",SqlDbType.DateTime);

				cmd.Parameters["@id"].Value = int.Parse(this.DataGridUserInfo.DataKeys[e.Item.ItemIndex].ToString());
				cmd.Parameters["@userName"].Value =((TextBox)e.Item.Cells[1].Controls[0]).Text ;
				cmd.Parameters["@passWord"].Value =((TextBox)e.Item.Cells[2].Controls[0]).Text;
				cmd.Parameters["@type"].Value = ((TextBox)e.Item.Cells[3].Controls[0]).Text;
				cmd.Parameters["@regDate"].Value = ((TextBox)e.Item.Cells[4].Controls[0]).Text;

				cmd.Connection.Open();
				cmd.ExecuteNonQuery();
				cmd.Connection.Close();
  
				this.DataGridUserInfo.EditItemIndex =-1; 
				this.BindGrid();
			}
			catch(Exception ex)
			{
				//Response.Write(ex.Message);
				RegisterStartupScript("errmsg","<script>alert('修改失败，该字符串未被识别为有效的日期时间。有一个从索引 0 处开始的未知字。 ');</script>");
			}
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			try
			{
				if(DropDownList1.SelectedValue=="用户名称")
				{
					ada = new SqlDataAdapter("select * from Admin where userName like '%"+ TxtKey.Text.ToString() +"%'",conn);
					ds = new DataSet();
					ada.Fill(ds,"Adminuser");
					if(ds.Tables["Adminuser"].Rows.Count!=0)
					{
						this.DataGridUserInfo.DataSource = ds.Tables["Adminuser"].DefaultView;
						this.DataBind();
					}
					else
					{
						RegisterStartupScript("msg","<script>alert('没有您要查找的信息！');</script>");
					}
				}
				else if(DropDownList1.SelectedValue=="用户类型")
				{
					ada = new SqlDataAdapter("select * from Admin where type like '%"+ TxtKey.Text.ToString() +"%'",conn);
					ds = new DataSet();
					ada.Fill(ds,"Admintype");
					if(ds.Tables["Admintype"].Rows.Count!=0)
					{
						this.DataGridUserInfo.DataSource = ds.Tables["Admintype"].DefaultView;
						this.DataBind();
					}
					else
					{
						RegisterStartupScript("msg","<script>alert('没有您要查找的信息！');</script>");
					}
				}
				else if(DropDownList1.SelectedValue=="*")
				{
					ada = new SqlDataAdapter("select * from Admin",conn);
					ds = new DataSet();
					ada.Fill(ds,"Admin1");
					if(ds.Tables["Admin1"].Rows.Count!=0)
					{
						this.DataGridUserInfo.DataSource = ds.Tables["Admin1"].DefaultView;
						this.DataBind();
					}
					else
					{
						RegisterStartupScript("msg","<script>alert('没有您要查找的信息！');</script>");
					}
				}
				else 
				{
					ada = new SqlDataAdapter("select * from Admin",conn);
					ds = new DataSet();
					ada.Fill(ds,"Admin");
					if(ds.Tables["Admin"].Rows.Count!=0)
					{
						this.DataGridUserInfo.DataSource = ds.Tables["Admin"].DefaultView;
						this.DataBind();
					}
					else
					{
						RegisterStartupScript("msg","<script>alert('没有您要查找的信息！');</script>");
					}
				}
			}
			catch(Exception ex)
			{
				Response.Write(ex.Message);
			}
		}
			
	}
}