C# 更新数据库

C# 更新数据库,c#,asp.net,ado.net,sql-server-express,C#,Asp.net,Ado.net,Sql Server Express,所以VisualStudio告诉我,我的引用在update语句中不正确。我觉得可能不止这些。我觉得我已经很接近了,但我看不出在这个sql语句中我错在哪里。网页的重点是更新数据库,这是这一步的全部内容。有人能帮帮我吗 这是我的密码 另外,我做了一个类似的insert语句,但是字符串idString部分一直到softwareReportRecord.Close();在update语句下面,它工作了 using System; using System.Collections.Generic;

所以VisualStudio告诉我,我的引用在update语句中不正确。我觉得可能不止这些。我觉得我已经很接近了,但我看不出在这个sql语句中我错在哪里。网页的重点是更新数据库,这是这一步的全部内容。有人能帮帮我吗

这是我的密码

另外,我做了一个类似的insert语句,但是字符串idString部分一直到softwareReportRecord.Close();在update语句下面,它工作了

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        reportDateText.Text = DateTime.Today.ToShortDateString();
        //code page 429
        if (Page.IsPostBack)
        {
            Page.Validate();
            if (Page.IsValid)
            {

                bugReportForm.Visible = false;
                regMessage.Visible = true;
                string typeOS = oSListbox.SelectedValue;
                string reportDate = reportDateText.Text;
                string hardware = hardwareText.Text;
                string occurrence = occurrenceRadioButtonList.SelectedValue;
                string shortDescription = shortDescriptionText.Text;
                string longDescription = longDescriptionText.Text;
                string actionsTaken = actionsTakenText.Text;
                SqlConnection dbConnection = new SqlConnection("Data Source=.\\SQLEXPRESS;Integrated Security=true");
                try
                {
                    dbConnection.Open();
                    dbConnection.ChangeDatabase("BugsReport");

                }
                catch (SqlException exception)
                {
                    if (exception.Number == 911)
                    {
                        SqlCommand sqlCommand = new SqlCommand("CREATE DATABASE BugsReport", dbConnection);
                        sqlCommand.ExecuteNonQuery();
                        regMessage.Text = "<p>Successfully created the database.</p>";
                        dbConnection.ChangeDatabase("BugsReport");
                    }
                    else
                        Response.Write("<p>Error code " + exception.Number
                            + ": " + exception.Message + "</p>");
                }
                finally
                {
                    regMessage.Text += "<p>Successfully selected the database.</p>";
                }
                try
                {
                    string SQLString = "SELECT * FROM softwareLog";
                    SqlCommand checkIDTable = new SqlCommand(SQLString, dbConnection);
                    SqlDataReader idRecords = checkIDTable.ExecuteReader();
                    idRecords.Close();
                }
                catch (SqlException exception)
                {
                    if (exception.Number == 208)
                    {
                        SqlCommand sqlCommand = new SqlCommand("CREATE TABLE softwareLog (reportID SMALLINT IDENTITY(100,1) PRIMARY KEY, typeOS VARCHAR(25), reportDate DATE, hardware VARCHAR(50), occurrence VARCHAR(15), shortDescription VARCHAR(100), longDescription VARCHAR(500), actionsTaken VARCHAR(25))", dbConnection);
                        sqlCommand.ExecuteNonQuery();
                        regMessage.Text += "<p>Successfully created the table.</p>";
                    }
                    else
                        regMessage.Text += "<p>Error code " + exception.Number
                            + ": " + exception.Message + "</p>";
                }
                finally
                {
                    string idString = "SELECT IDENT_CURRENT('softwareLog') AS reportID";
                SqlCommand newID = new SqlCommand(idString, dbConnection);
                SqlDataReader softwareReportRecord = newID.ExecuteReader();
                softwareReportRecord.Read();
                string reportID = Convert.ToString(softwareReportRecord["reportID"]);
                softwareReportRecord.Close();

                string editRecord = "UPDATE softwareLog SET "
            + "typeOS='" + typeOS + "', "
            + "reportDate='" + reportDate + "', "
            + "hardware='" + hardware + "' "
            + "occurrence='" + occurrence + "' "
            + "shortDescription='" + shortDescription + "' "
            + "longDescription='" + longDescription + "' "
            + "actionsTaken='" + actionsTaken + "' "
            + "WHERE reportID=" + reportID + ";";



                    SqlCommand sqlCommand = new SqlCommand(editRecord, dbConnection);
                    sqlCommand.ExecuteNonQuery();
                }


                dbConnection.Close();
            }
        }
    }
}




finally
                {
                    string addRecord = "INSERT INTO softwareLog VALUES('"
                        + typeOS + "', '"
                        + reportDate + "', '"
                        + hardware + "', '"
                        + occurrence + "', '"
                        + shortDescription + "', '"
                        + longDescription + "', '"
                        + actionsTaken + "')";

                    SqlCommand sqlCommand = new SqlCommand(addRecord, dbConnection);
                    sqlCommand.ExecuteNonQuery();
                }
                string idString = "SELECT IDENT_CURRENT('softwareLog') AS reportID";
                SqlCommand newID = new SqlCommand(idString, dbConnection);
                SqlDataReader softwareReportRecord = newID.ExecuteReader();
                softwareReportRecord.Read();
                string reportID = Convert.ToString(softwareReportRecord["reportID"]);
                softwareReportRecord.Close();
                regMessage.Text += "<p>Sorry for your inconvience. We will be working on your problem ASAP.  For reference your ID is  </p>" + reportID;

                dbConnection.Close();
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用System.Web;
使用System.Web.UI;
使用System.Web.UI.WebControl;
使用System.Data.SqlClient;
公共部分类\u默认值:System.Web.UI.Page
{
受保护的无效页面加载(对象发送方、事件参数e)
{
reportDateText.Text=DateTime.Today.ToSortDateString();
//代码页429
如果(第IsPostBack页)
{
Page.Validate();
如果(第页有效)
{
bugReportForm.Visible=false;
regMessage.Visible=true;
字符串typeOS=oSListbox.SelectedValue;
字符串reportDate=reportDateText.Text;
字符串hardware=hardwareText.Text;
字符串出现率=occurrenceRadioButtonList.SelectedValue;
string shortDescription=shortdescriptionontext.Text;
字符串longDescription=longDescriptionContext.Text;
字符串actionsTaken=actionsTakenText.Text;
SqlConnection dbConnection=newsqlconnection(“数据源=。\\SQLEXPRESS;集成安全性=true”);
尝试
{
dbConnection.Open();
dbConnection.ChangeDatabase(“BugsReport”);
}
捕获(SqlException异常)
{
如果(异常编号==911)
{
SqlCommand SqlCommand=newsqlcommand(“创建数据库错误报告”,dbConnection);
sqlCommand.ExecuteNonQuery();
regMessage.Text=“已成功创建数据库。

”; dbConnection.ChangeDatabase(“BugsReport”); } 其他的 响应。写入(“错误代码”+异常。编号 +“:“+异常.消息+”

”; } 最后 { regMessage.Text+=“成功选择了数据库。

”; } 尝试 { string SQLString=“从软件日志中选择*”; SqlCommand checkIDTable=新的SqlCommand(SQLString,dbConnection); SqlDataReader idRecords=checkIDTable.ExecuteReader(); idRecords.Close(); } 捕获(SqlException异常) { 如果(exception.Number==208) { SqlCommand SqlCommand=new SqlCommand(“创建表softwareLog(reportID SMALLINT-IDENTITY(100,1)主键,typeOS-VARCHAR(25),reportDate-DATE,hardware-VARCHAR(50),occurrence-VARCHAR(15),shortDescription-VARCHAR(100),longsdescription-VARCHAR(500),actionsTaken-VARCHAR(25)),dbConnection); sqlCommand.ExecuteNonQuery(); regMessage.Text+=“成功创建了表。

”; } 其他的 regMessage.Text+=“错误代码”+异常。编号 +“:”+异常。消息+“

”; } 最后 { string idString=“选择当前标识('softwareLog')作为报告ID”; SqlCommand newID=newsqlcommand(idString,dbConnection); SqlDataReader softwareReportRecord=newID.ExecuteReader(); softwarereptrecord.Read(); string reportID=Convert.ToString(softwareReportRecord[“reportID”]); softwarereptrecord.Close(); string editRecord=“更新软件日志集” +“typeOS=”“+typeOS+”,” +“reportDate=”+reportDate+“,” +“硬件=”“+硬件+”” +“出现次数='”+出现次数+“” +“shortDescription=”“+shortDescription+”” +“longDescription=”+longDescription+“” +“actionsTaken='”+actionsTaken+“” +“其中reportID=“+reportID+”;”; SqlCommand SqlCommand=新的SqlCommand(editRecord,dbConnection); sqlCommand.ExecuteNonQuery(); } dbConnection.Close(); } } } } 最后 { string addRecord=“插入到软件日志值(”) +typeOS+“,” +报告日期+“,” +硬件+“,” +出现次数+“,” +简短描述+“,” +longDescription+“,” +actionsTaken+“')”; SqlCommand SqlCommand=新的SqlCommand(addRecord,dbConnection); sqlCommand.ExecuteNonQuery(); } string idString=“选择当前标识('softwareLog')作为报告ID”; SqlCommand newID=newsqlcommand(idString,dbConnection); SqlDataReader softwareReportRecord=newID.ExecuteReader(); softwarereptrecord.Read(); string reportID=Convert.ToString(softwareReportRecord[“reportID”]); softwarereptrecord.Close(); regMessage.Text+=“很抱歉您的失礼
string editRecord = "UPDATE softwareLog SET "
    + "typeOS='" + typeOS.Replace("'", "''") + "', "
    + "reportDate='" + reportDate + "', "
    + "hardware='" + hardware.Replace("'", "''") + "',"
    + "occurrence='" + occurrence.Replace("'", "''") + "',"
    + "shortDescription='" + shortDescription.Replace("'", "''") + "',"
    + "longDescription='" + longDescription + "',"
    + "actionsTaken='" + actionsTaken.Replace("'", "''") + "'"
    + "WHERE reportID= " + reportID ;
string addRecord = "INSERT INTO softwareLog VALUES('"
    + typeOS.Replace("'", "''") + "', '"
    + reportDate + "', '"
    + hardware.Replace("'", "''") + "', '"
    + occurrence.Replace("'", "''") + "', '"
    + shortDescription.Replace("'", "''") + "', '"
    + longDescription.Replace("'", "''") + "', '"
    + actionsTaken.Replace("'", "''") + "')";
 string editRecord = "UPDATE softwareLog SET "
          + "typeOS='" + typeOS + "', "
          + "reportDate='" + reportDate + "', "
          + "hardware='" + hardware + "',"
          + "occurrence='" + occurrence + "',"
          + "shortDescription='" + shortDescription + "',"
          + "longDescription='" + longDescription + "',"
          + "actionsTaken='" + actionsTaken + "'"
          + "WHERE reportID=" + reportID + "";