[置顶] c# 执行多条SQL语句，实现数据库事务 线性表 Hashtable

菜鸟初尝线性表

一下是页面源代码

<%@ Page Title="" Language="C#" MasterPageFile="~/admin/Admin.Master" AutoEventWireup="true"
    CodeBehind="MyDisasterEdit.aspx.cs" Inherits="cn.edu.cidp.zqfxWeb.admin.Edit.MyDisasterEdit" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolderTitle" runat="server">
    <script type="text/javascript" language="javascript">

        function CheckAll(controlId, select) {

            var control = document.getElementById(controlId);
            //alert(select);
            var nodeList = control.getElementsByTagName("input");
            for (var i = 0; i < nodeList.length; i++) {
                var node = nodeList[i];
                if (node.type == "checkbox") {
                    node.checked = select;
                }
            }
        }
    </script>
    <p>
        编辑灾情</p>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolderBody" runat="server">
    <table align="center">
        <tr>
            <td>
            </td>
        </tr>
        <tr>
            <td>
                <table>
                    <tr>
                        <td>
                            标题：
                        </td>
                        <td>
                            <asp:TextBox ID="txtDisasterTitle" runat="server" Width="500px"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td valign="top">
                            描述：
                        </td>
                        <td>
                            <asp:TextBox ID="txtDisasterDesc" runat="server" Width="500px" Height="200px"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            发生时间：
                        </td>
                        <td>
                            <asp:TextBox ID="txtEventTime" runat="server" Width="500px"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            地区：
                        </td>
                        <td>
                            <asp:TextBox ID="txtRegion" runat="server" Width="500px"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <%-- 只有地震才有--%>
                        <td colspan="2">
                            <asp:Panel ID="PanelEarthquake" runat="server">
                                <table>
                                    <tr>
                                        <td>
                                            <table>
                                                <tr>
                                                    <td>
                                                        震级：
                                                    </td>
                                                    <td>
                                                        <asp:TextBox ID="txtMagnitude" runat="server" Width="150px"></asp:TextBox>
                                                    </td>
                                                </tr>
                                            </table>
                                        </td>
                                        <td>
                                            <table>
                                                <tr>
                                                    <td>
                                                        深度：
                                                    </td>
                                                    <td>
                                                        <asp:TextBox ID="txtDepth" runat="server" Width="150px"></asp:TextBox>
                                                    </td>
                                                </tr>
                                            </table>
                                        </td>
                                    </tr>
                                </table>
                            </asp:Panel>
                        </td>
                        <tr>
                            <td colspan="2">
                                <table>
                                    <tr>
                                        <td>
                                            <table>
                                                <tr>
                                                    <td>
                                                        经度：
                                                    </td>
                                                    <td>
                                                        <asp:TextBox ID="txtLongitude" runat="server" Width="150px"></asp:TextBox>
                                                    </td>
                                                </tr>
                                            </table>
                                        </td>
                                        <td>
                                            <table>
                                                <tr>
                                                    <td>
                                                        纬度：
                                                    </td>
                                                    <td>
                                                        <asp:TextBox ID="txtLatitude" runat="server" Width="150px"></asp:TextBox>
                                                    </td>
                                                </tr>
                                            </table>
                                        </td>
                                    </tr>
                                </table>
                            </td>
                        </tr>
                    </tr>
                </table>
            </td>
        </tr>
        <tr>
            <td>
                <table width="*">
                    <tr>
                        <td>
                            相关灾情：
                        </td>
                    </tr>
                </table>
            </td>
        </tr>
        <tr>
            <td>
                <table width="*">
                    <asp:Repeater ID="rptDisasters" runat="server">
                        <HeaderTemplate>
                            <tr>
                                <td colspan="3">
                                    <input id="cbSelect" type="checkbox" onclick="CheckAll('ContentPlaceHolderBody_gvTexts',this.checked)" />全选
                                </td>
                            </tr>
                        </HeaderTemplate>
                        <ItemTemplate>
                            <tr>
                                <td>
                                    <asp:CheckBox ID="SelectThis" runat="server" />
                                    <asp:HiddenField ID="hidId" Value='<%#Eval("DisasterId")%>' runat="server" />
                                </td>
                                <td>
                                    <ul style="text-align: left; line-height: 160%;">
                                        <li>[标题]<%# Eval("DisasterTitle")%></li>
                                        <li>[地区]<%# Eval("Region")%></li>
                                        <li>[经度]<%# Eval("Longitude")%>，[纬度]<%#Eval("Latitude")%></li>
                                        <li>[发生时间]<%# Eval("EventTime")%></li>
                                    </ul>
                                </td>
                                <td>
                                </td>
                            </tr>
                        </ItemTemplate>
                    </asp:Repeater>
                </table>
            </td>
        </tr>
        <tr>
            <td colspan="*" align="center">
                <asp:Button ID="btnSave" runat="server" Text="关联并保存" onclick="btnSave_Click"></asp:Button>
                &nbsp;&nbsp;
                <asp:Button ID="btnCancel" runat="server" Text="取消" onclick="btnCancel_Click"></asp:Button>
            </td>
        </tr>
        <tr>
            <td colspan="*" align="center">
               <asp:Label ID="lblMSG" runat="server" Font-Bold="True" ForeColor="#CC0000"></asp:Label>
            </td>
        </tr>
    </table>
</asp:Content>

补界面截图一张

 

作为以为已经大三的人来说  第一次写关于线性表的程序 略表惭愧

用线性的原因呢是应为我要用数据库事物来执行一些操作 ，比如将多条重复的事件归纳为一条时间  而是这些事件关联的新闻Texts，图片Pictures，视频Videos，都要更新，所以就选择了数据库事物，

最关键的是数据库helper类当中是这样的

1：

/// <summary>
        /// 执行多条SQL语句，实现数据库事务。
        /// </summary>
        /// <param name="SQLStringList">多条SQL语句</param>  
        public static int ExecuteSqlTran(List<String> SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                MySqlCommand cmd = new MySqlCommand();
                cmd.Connection = conn;
                MySqlTransaction tx = conn.BeginTransaction();
                cmd.Transaction = tx;
                try
                {
                    int count = 0;
                    for (int n = 0; n < SQLStringList.Count; n++)
                    {
                        string strsql = SQLStringList[n];
                        if (strsql.Trim().Length > 1)
                        {
                            cmd.CommandText = strsql;
                            count += cmd.ExecuteNonQuery();
                        }
                    }
                    tx.Commit();
                    return count;
                }
                catch
                {
                    tx.Rollback();
                    return 0;
                }
            }
        }

 

2：

/// <summary>
        /// 执行多条SQL语句，实现数据库事务。
        /// </summary>
        /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
        public static void ExecuteSqlTran(Hashtable SQLStringList)
        {
            using (MySqlConnection conn = new MySqlConnection(connectionString))
            {
                conn.Open();
                using (MySqlTransaction trans = conn.BeginTransaction())
                {
                    MySqlCommand cmd = new MySqlCommand();
                    try
                    {
                        //循环
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            cmd.Parameters.Clear();
                        }
                        trans.Commit();
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }

 一开始我想用哈希表Hashtable把

结果就有了 如下事件

解析了之后呢还是不可用

郁闷了 上网搜到：http://www.cnblogs.com/leischen/archive/2011/12/19/2293939.html

里面东西是要用到model的

而我是为了避开model才这样弄的

所以自己写

：

代码如下

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using cn.edu.cidp.zqfxLib;
namespace cn.edu.cidp.zqfxWeb.admin.Edit
{
    public partial class MyDisasterEdit : MyAdminPage
    {
        int id;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                if (Request["ID"] != null || Request["ID"] != "")
                {
                     id = Convert.ToInt32(Request["ID"]);
                    LoadData(id);

                }

            }

        }
        public void LoadData(int id)
        {
            if (id > 0)
            {

                Disasters d = new Disasters();
                if (!d.Exists(id))
                {
                    this.lblMSG.Text = "参数不正确";
                    return;
                }
                d.GetModel(id);
                this.txtDisasterTitle.Text = d.DisasterTitle;
                this.txtDisasterDesc.Text = d.DisasterDesc;
                this.txtEventTime.Text = d.EventTime.ToString();
                this.txtLatitude.Text = d.Latitude.ToString();
                this.txtLongitude.Text = d.Longitude.ToString();
                this.txtMagnitude.Text = d.Magnitude.ToString();
                this.txtRegion.Text = d.Region.ToString();
                this.txtDepth.Text = d.Depth.ToString();
                if (d.DisasterCategoryId > 0)
                {
                    // PageUtil.GetDisasterNameByDisterId(d.DisasterCategoryId);
                    if (PageUtil.GetCategoryNameById(Convert.ToInt32(d.DisasterCategoryId)).ToString().Contains("地震"))
                    {
                        this.PanelEarthquake.Visible = true;

                    }
                    else
                        this.PanelEarthquake.Visible = false;
                    
                }
                string strWhere = "DisasterTitle like '%{0}%' Longitude like  '%{1}%' Latitude like  '%{2}%' order by UploadUName Desc";
                strWhere = string.Format(strWhere, d.DisasterTitle, d.Longitude, d.Latitude);
                Disasters disasters = new Disasters();
                rptDisasters.DataSource = disasters.GetList(strWhere);
                rptDisasters.DataBind();

            }
         
            
        }

        protected void btnSave_Click(object sender, EventArgs e)
        {
            Disasters d = new Disasters();
            d.DisasterTitle = this.txtDisasterTitle.Text;
            d.DisasterDesc= this.txtDisasterDesc.Text;
            d.EventTime = Convert.ToDateTime(this.txtEventTime.Text) ;
            d.Latitude  =  Convert.ToDouble(this.txtLatitude.Text);
            d.Longitude =  Convert.ToDouble(this.txtLongitude.Text);
            d.Magnitude = Convert.ToDouble( this.txtMagnitude.Text);
            d.Region = this.txtRegion.Text;
            d.Depth = Convert.ToDouble(this.txtDepth.Text);
           
            if (id > 0)
            {

                if (!d.Exists(id))
                {
                    this.lblMSG.Text = "保存失败";
                    return;
                }
            }
            string  strSql="update disasters set "+
                "DisasterTitle='"+d.DisasterTitle+"',"+"DisasterDesc='"+d.DisasterDesc+"',"+"Longitude='"+  d.Longitude+"',"+
                "Latitude='"+d.Latitude+"',"+"Depth='"+d.Depth+"',"+"Magnitude='"+d.Magnitude+"',"+
                "Region='"+ d.Region+"',"+"EventTime='"+d.EventTime+"',"+" where DisasterId='"+id+"',";
            List<String> SQLStringList=new List<String>();
            SQLStringList.Add(strSql);
            //遍历rptDisasters的选择项 更新AdminAuthFlag=-1 并将关联的图片 视频 disasterId更新为当前有效的DisasterId
            for (int i = 0; i < rptDisasters.Items.Count; i++)
            {

                int disasterId= Convert.ToInt32(((HiddenField)rptDisasters.Items[i].FindControl("hidId")).Value);
                CheckBox SelectThis = (CheckBox)rptDisasters.Items[i].FindControl("SelectThis");
                if (SelectThis.Checked)
                {
                    SQLStringList.Add("Update Videos set DisasterId='" + id + "' where DisasterId='" + disasterId + "'");
                    SQLStringList.Add("Update Pictures set DisasterId='" + id + "' where DisasterId='" + disasterId + "' ");
                    SQLStringList.Add("Update Texts set DisasterId='" + id + "' where DisasterId='" + disasterId + "'");
                    SQLStringList.Add("Update Disasters set AdminAuthFlag='-1' where DisasterId='" + disasterId + "'");
                   
                }
            }
            //执行
            int rows = DbHelperMySQL.ExecuteSqlTran(SQLStringList);
            if (rows <= 0)
            {
                this.lblMSG.Text = "保存失败";
            }

        

           
        }

        protected void btnCancel_Click(object sender, EventArgs e)
        {
            Response.Redirect("../MyAuditDisastersList.aspx");
        }
    }
}