C# ADO.Net插入不插入数据

我有一个c.NET4.5控制台应用程序，我正在尝试将数据表中的数据插入SQLServer2008R2数据库表。我没有收到任何错误，但没有插入任何数据。这是我的密码：

Int32 newID = 0;
DataTable dtMaxUserID = GeneralClassLibrary.GeneralDataAccessLayer.ExecuteSelect("SELECT MAX(UserID)+1 AS NewID FROM TIUser", false, "TrackitCN");
newID = Convert.ToInt32(dtMaxUserID.Rows[0]["NewID"].ToString());

//Get new users from AllUserData
DataColumn dcRowID = new DataColumn("RowID", typeof(Int32));
//dcRowID.AllowDBNull = false;
dcRowID.AutoIncrement = true;
dcRowID.AutoIncrementSeed = 1;
dcRowID.AutoIncrementStep = 1;
//dcRowID.Unique = true;
//dcRowID.ColumnName = "RowID";
DataTable dtNewUsers = new DataTable();
dtNewUsers.Columns.Add(dcRowID);
dtNewUsers.Columns.Add("MaxID");
dtNewUsers.Columns.Add("UserID");
dtNewUsers.Columns.Add("FullName");
dtNewUsers.Columns.Add("Title");
dtNewUsers.Columns.Add("Phone");
dtNewUsers.Columns.Add("EMailAddr");
dtNewUsers.Columns.Add("Fax");
dtNewUsers.Columns.Add("Dept");
dtNewUsers.Columns.Add("Dept_Num");
dtNewUsers.Columns.Add("Location");
dtNewUsers.Columns.Add("UserDef_1");
dtNewUsers.Columns.Add("UserDef_2");
dtNewUsers.Columns.Add("Login");
dtNewUsers.Columns.Add("Password");
dtNewUsers.Columns.Add("PasswordFlags");
dtNewUsers.Columns.Add("LanguageID");
dtNewUsers.Columns.Add("NTAuthentication");
dtNewUsers.Columns.Add("NTAccount");
dtNewUsers.Columns.Add("SID");
dtNewUsers.Columns.Add("SelfServiceAccess");
dtNewUsers.Columns.Add("ImagePath");
dtNewUsers.Columns.Add("CompFlag");
dtNewUsers.Columns.Add("Employee_ID");
dtNewUsers.Columns.Add("SessionID");
string strQuery = "SELECT " + newID + " AS MaxID, LName" + ", " + "FName AS FullName, Title, Phone, EMail AS EmailAddr, Fax, Department AS Dept, Office AS Location, [Login] AS Employee_ID FROM [User] WHERE StartDate >= CAST(DATEPART(year,getdate()) AS varchar) + '-' + CAST(DATEPART(month,getdate()) AS varchar) + '-' + CAST(DATEPART(day,getdate())-1 AS varchar)";
DataTable dtTemp = GeneralClassLibrary.GeneralDataAccessLayer.ExecuteSelect(strQuery, false, "AllUserDataCN");
foreach (DataRow row in dtTemp.Rows)
    dtNewUsers.ImportRow(row);

SqlTransaction tran = null;
    try
    {
        connection.Open();
        tran = connection.BeginTransaction();

        //Insert new users into TIUser
        SqlDataAdapter TIUser_adapter = new SqlDataAdapter();
        string queryString = "SELECT * FROM TIUser WHERE 1 = 0";
        TIUser_adapter.SelectCommand = new SqlCommand(queryString, connection, tran);
        TIUser_adapter.Fill(dtNewUsers);
        dtNewUsers.AcceptChanges();
        TIUser_adapter.Update(dtNewUsers);

        tran.Commit();
    }
    catch (System.Exception ex)
    {
        tran.Rollback();
        throw ex;
    }
    finally
    {
        connection.Close();
    }

GeneralClassLibrary是一个类库，我们在这里使用它来处理很多事情；在这里，它只是在数据库上执行SELECT语句。TIUser是数据库表。DataTable dtNewUsers包含一行。我已经通过在ImportRow完成后调试代码和检查DataTable验证了这一点

在收到用户3787557的回复后，谢谢！，我更接近了，但我遇到了并发冲突。我正在开发数据库，我所做的只是插入一条记录，所以我不知道为什么会出现并发冲突。一种可能性是：我通过添加两列来改变DataTable dtNewUsers的结构。但是，在进行更新之前，我会删除这些列。插入命令很好；我已经在SSMS中检查了它，它被解析了。这是我的新代码：

using (SqlConnection connection = new SqlConnection(GeneralClassLibrary.GeneralConfigurationManager.ConnectionStrings["TrackitCN"].ConnectionString))
        {
            SqlTransaction tran = null;
            connection.Open();
            tran = connection.BeginTransaction();

            try
            {
                //Create empty TIUser Data Adapter
                SqlDataAdapter TIUser_adapter = new SqlDataAdapter();
                SqlCommandBuilder TIUser_builder = new SqlCommandBuilder(TIUser_adapter);
                string queryString = "SELECT * FROM TIUser WHERE 1 = 0";
                TIUser_adapter.SelectCommand = new SqlCommand(queryString, connection, tran);
                TIUser_adapter.InsertCommand = TIUser_builder.GetInsertCommand();
                TIUser_adapter.UpdateCommand = TIUser_builder.GetUpdateCommand();

                //Get new users from AllUserData
                DataTable dtNewUsers = new DataTable();
                TIUser_adapter.Fill(dtNewUsers);
                DataColumn dcRowID = new DataColumn("RowID", typeof(Int32));
                dcRowID.AutoIncrement = true;
                dcRowID.AutoIncrementSeed = 1;
                dcRowID.AutoIncrementStep = 1;
                dtNewUsers.Columns.Add(dcRowID);
                dtNewUsers.Columns.Add("MaxID");                                        string strQuery = "SELECT " + newID + " AS MaxID, LName + ', ' + FName AS FullName, Title, Phone, EMail AS EmailAddr, Fax, Department AS Dept, Office AS Location, [Login] AS Employee_ID FROM [User] WHERE StartDate >= CAST(DATEPART(year,getdate()) AS varchar) + '-' + CAST(DATEPART(month,getdate()) AS varchar) + '-' + CAST(DATEPART(day,getdate())-1 AS varchar)";
                DataTable dtTemp = GeneralClassLibrary.GeneralDataAccessLayer.ExecuteSelect(strQuery, false, "AllUserDataCN");
                foreach (DataRow row in dtTemp.Rows)
                    dtNewUsers.ImportRow(row);

                //Make sure new users aren't already in Trackit
                foreach (DataRow row in dtNewUsers.Rows)
                {
                    row["UserID"] = (Convert.ToInt32(row["RowID"]) + Convert.ToInt32(row["MaxID"])).ToString();
                    DataTable dtOverlap = GeneralClassLibrary.GeneralDataAccessLayer.ExecuteSelect("SELECT * FROM TIUser WHERE Employee_ID = '" + row["Employee_ID"].ToString() + "'", false, "TrackitCN");
                    if (dtOverlap.Rows.Count > 0)
                        dtNewUsers.Rows.Remove(row);
                }    

                //Remove MaxID and RowID Columns
                dtNewUsers.Columns.Remove("MaxID");
                dtNewUsers.Columns.Remove("RowID")

                TIUser_adapter.Update(dtNewUsers);
                tran.Commit();
            }
            catch (System.Exception ex)
            {
                GeneralClassLibrary.GeneralEmail.ExceptionNotification(System.Reflection.Assembly.GetExecutingAssembly().ToString(), ex.Message, ex.StackTrace);
                tran.Rollback();
                throw ex;
            }
            finally
            {
                connection.Close();
            }
        }

我得到的堆栈跟踪是：

   at System.Data.Common.DbDataAdapter.UpdatedRowStatusErrors(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)


at System.Data.Common.DbDataAdapter.UpdatedRowStatus(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)



at System.Data.Common.DbDataAdapter.Update(DataRow[] dataRows, DataTableMapping tableMapping)



at System.Data.Common.DbDataAdapter.UpdateFromDataTable(DataTable dataTable, DataTableMapping tableMapping)



at System.Data.Common.DbDataAdapter.Update(DataTable dataTable)



at UpdateTrackitUsers.Program.Main(String[] args) in c:\Users\06717\Documents\Visual Studio 2012\Projects\UpdateTrackitUsersConsole\UpdateTrackitUsersConsole\Program.cs:line 91

第87行是：

TIUser_adapter.Update(dtNewUsers);

---

这是对我有用的代码。基本上，代码中缺少的是使用SqlCommandBuilder创建InsertCommand和UpdateCommand。同时也要摆脱这些变化。这将导致新行不被发送到数据库。最后一件事：如果正在使用一个属性，请确保标记MDF数据库文件，否则每次编译时都会覆盖数据库，并且看不到更改

using (SqlConnection connection = new SqlConnection(connectionString))
{
    SqlDataAdapter adapter = new SqlDataAdapter();
    SqlCommandBuilder builder = new SqlCommandBuilder(adapter);

    adapter.SelectCommand = new SqlCommand(queryString, connection);
    adapter.InsertCommand = builder.GetInsertCommand();
    adapter.UpdateCommand = builder.GetUpdateCommand();
    adapter.DeleteCommand = builder.GetDeleteCommand();

    DataTable dt = new DataTable();
    adapter.Fill(dt);

    DataRow row = dt.NewRow();
    row["RegionID"] = 5;
    row["RegionDescription"] = "Some region";
    dt.Rows.Add(row);

    //dt.AcceptChanges();

    int counter = adapter.Update(dt); 
}                    

---

您能包含填充数据表的代码吗？上面代码中的insert命令在哪里？它是一个update命令。我使用and作为referenceside注意：在您的catch块中，您将要执行throw；而不是扔；。不要丢失你珍贵的stacktrace:sstan-谢谢！实际上，我删除了一行我给自己发电子邮件的内容，比如Message和StackTrace，只是为了简化事情。但是代码从来没有出现过，所以我不得不相信我只是做了错误的插入。仅供参考，我使用了Northwind DB和Region table来简化它的使用。好的，我越来越接近了。谢谢你的帮助。我现在在Update语句中发现并发冲突。我已在问题中发布了我的新代码。请发布您收到的异常的堆栈跟踪。堆栈跟踪太长，无法放入注释，因此我已将其添加到问题的底部。在调用Update之前，请检查您插入或修改的任何行的以下属性：HasError、RowError和RowState。还发布完整的堆栈跟踪，包括内部异常。使用exception-ToString方法轻松获取它，并将其格式化为代码，而不是纯文本。