将列表插入表

我有这种方法将新公司插入数据库但我有List问题，因为我希望能够为公司插入多个联系人。 有人能帮帮我吗？

 public static bool AddNewCompany(Company company,List contact , Location local) { // get a configured DbCommand object DbCommand comm = GenericDataAccess.CreateCommand(); // Set the stored procedure name comm.CommandText = "AddNewCompany"; //create new parameter @CompanyName DbParameter param = comm.CreateParameter(); param.ParameterName = "@CompanyName"; param.Value = company.CompanyName; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @CompanyDetail param = comm.CreateParameter(); param.ParameterName = "@CompanyDetail"; param.Value = company.CompanyDetail; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ModifiedDate param = comm.CreateParameter(); param.ParameterName = "@ModifiedDate"; param.Value = DateTime.Now; param.DbType = DbType.DateTime; comm.Parameters.Add(param); //Company Info foreach (var c in contact) { //create new parameter @LabelContactTypeID param = comm.CreateParameter(); param.ParameterName = "@LabelContactTypeID"; param.Value = c.LabelContactTypeID; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ContactDetails param = comm.CreateParameter(); param.ParameterName = "@ContactDetails"; param.Value = c.ContactDetail; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Status param = comm.CreateParameter(); param.ParameterName = "@Status"; param.Value = c.Status; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Notes param = comm.CreateParameter(); param.ParameterName = "@Notes"; param.Value = c.Notes; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); } //Company Info //create new parameter @Address param = comm.CreateParameter(); param.ParameterName = "@Address"; param.Value = local.Address; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @City param = comm.CreateParameter(); param.ParameterName = "@City"; param.Value = local.City; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Province param = comm.CreateParameter(); param.ParameterName = "@Province"; param.Value = local.Province; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @PostalCode param = comm.CreateParameter(); param.ParameterName = "@PostalCode"; param.Value = local.PostalCode; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Note param = comm.CreateParameter(); param.ParameterName = "@Note"; param.Value = local.Note; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ModifiedDateLocation param = comm.CreateParameter(); param.ParameterName = "@ModifiedDateLocation"; param.Value = DateTime.Now; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); try { return (GenericDataAccess.ExecuteNonQuery(comm) != -1); } catch { return false; } } 

SQL Server存储过程：

 ALTER PROCEDURE [dbo].[AddNewCompany] @CompanyName nvarchar(50), @CompanyDetail nvarchar(max), @ModifiedDate datetime, --ContactInfo @LabelContactTypeID int, @ContactDetails nvarchar(MAX), @Status bit, @Notes nvarchar(MAX), -- Company Location @Address nvarchar(max), @City nvarchar(50), @Province nvarchar(50), @PostalCode nvarchar(10), @Note nvarchar(max), @ModifiedDateLocation datetime AS BEGIN SET NOCOUNT ON; INSERT INTO [TaskManagementSystem_DB].[dbo].[Company] ([companyName],[companyDetail], [modifiedDate]) VALUES (@CompanyName, @CompanyDetail, @ModifiedDate) DECLARE @CompanyID int SET @CompanyID = SCOPE_IDENTITY(); INSERT INTO [TaskManagementSystem_DB].[dbo].[Company_Contacts] ([companyID], [labelContactTypeID], [contactDetails], [status], [notes]) VALUES (@CompanyID, @LabelContactTypeID, @ContactDetails, @Status, @Notes) INSERT INTO [TaskManagementSystem_DB].[dbo].[Location]([address], [city], [province], [postalCode], [note], [modifiedDate]) VALUES (@Address, @City, @Province, @PostalCode, @Note, @ModifiedDateLocation) DECLARE @LocationID INT SET @LocationID = SCOPE_IDENTITY(); INSERT INTO [TaskManagementSystem_DB].[dbo].[Company_location]([companyID], [locationID]) VALUES (@CompanyID, @LocationID) END 

Answer 1

您的存储过程只为公司插入一个联系人。 如果要添加其他联系人（或更多联系人），请编写另一个过程，该过程将使用插入到数据库的最后一家公司的CompanyID插入新联系人。

我不能写你的代码因为我不知道表并且不能复制结果，但你应该从这段代码创建另一个程序

 INSERT INTO [TaskManagementSystem_DB].[dbo].[Company_Contacts] ([companyID] ,[labelContactTypeID] ,[contactDetails] ,[status] ,[notes]) VALUES (@CompanyID ,@LabelContactTypeID ,@ContactDetails ,@Status ,@Notes) 

在第一部分中，只需从列表中添加一个联系人（列表中索引0上的第一个联系人）

阅读刚刚插入的公司的CompanyID以及列表中的其他联系人，使用此ID调用您的新程序。 它将添加使用相同companyID引用的新联系人（引用标识一对多）。

编辑您应该这样做：

 public static bool AddNewCompany(Company company,List contact , Location local) { // get a configured DbCommand object DbCommand comm = GenericDataAccess.CreateCommand(); //Set the store Proc name comm.CommandText = "AddNewCompany"; //create new parameter @CompanyName DbParameter param = comm.CreateParameter(); param.ParameterName = "@CompanyName"; param.Value = company.CompanyName; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @CompanyDetail param = comm.CreateParameter(); param.ParameterName = "@CompanyDetail"; param.Value = company.CompanyDetail; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ModifiedDate param = comm.CreateParameter(); param.ParameterName = "@ModifiedDate"; param.Value = DateTime.Now; param.DbType = DbType.DateTime; comm.Parameters.Add(param); //Company Info //add only one contact /create new parameter @LabelContactTypeID param = comm.CreateParameter(); param.ParameterName = "@LabelContactTypeID"; param.Value = contact[0].LabelContactTypeID; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ContactDetails param = comm.CreateParameter(); param.ParameterName = "@ContactDetails"; param.Value = contact[0].ContactDetail; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Status param = comm.CreateParameter(); param.ParameterName = "@Status"; param.Value = contact[0].Status; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Notes param = comm.CreateParameter(); param.ParameterName = "@Notes"; param.Value = contact[0].Notes; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //Company Info //create new parameter @Address param = comm.CreateParameter(); param.ParameterName = "@Address"; param.Value = local.Address; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @City param = comm.CreateParameter(); param.ParameterName = "@City"; param.Value = local.City; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Province param = comm.CreateParameter(); param.ParameterName = "@Province"; param.Value = local.Province; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @PostalCode param = comm.CreateParameter(); param.ParameterName = "@PostalCode"; param.Value = local.PostalCode; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Note param = comm.CreateParameter(); param.ParameterName = "@Note"; param.Value = local.Note; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ModifiedDateLocation param = comm.CreateParameter(); param.ParameterName = "@ModifiedDateLocation"; param.Value = DateTime.Now; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); try { return (GenericDataAccess.ExecuteNonQuery(comm) != -1); } catch { return false; } 

}

创建一个新方法，使用我粘贴在此处的过程的一部分添加新联系人，并插入所有其他联系人。 将此方法传递给companyID。

Answer 2

将公司部分移动到联系人上方。

把它放在接触回路中

 GenericDataAccess.ExecuteNonQuery(comm); 

它增加了一些逻辑来检查是否有任何故障。
如果您想继续或立即返回，由您决定。

 public static bool AddNewCompany(Company company,List contact , Location local) { // get a configured DbCommand object DbCommand comm = GenericDataAccess.CreateCommand(); //Set the store Proc name comm.CommandText = "AddNewCompany"; //create new parameter @CompanyName DbParameter param = comm.CreateParameter(); param.ParameterName = "@CompanyName"; param.Value = company.CompanyName; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @CompanyDetail param = comm.CreateParameter(); param.ParameterName = "@CompanyDetail"; param.Value = company.CompanyDetail; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ModifiedDate param = comm.CreateParameter(); param.ParameterName = "@ModifiedDate"; param.Value = DateTime.Now; param.DbType = DbType.DateTime; comm.Parameters.Add(param); //Company Info //create new parameter @Address param = comm.CreateParameter(); param.ParameterName = "@Address"; param.Value = local.Address; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @City param = comm.CreateParameter(); param.ParameterName = "@City"; param.Value = local.City; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Province param = comm.CreateParameter(); param.ParameterName = "@Province"; param.Value = local.Province; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @PostalCode param = comm.CreateParameter(); param.ParameterName = "@PostalCode"; param.Value = local.PostalCode; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Note param = comm.CreateParameter(); param.ParameterName = "@Note"; param.Value = local.Note; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @ModifiedDateLocation param = comm.CreateParameter(); param.ParameterName = "@ModifiedDateLocation"; param.Value = DateTime.Now; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); // need to split up the SP to add the company here // execute company SP here // and get back the companyID // can just clear out the parameters and reuse it comm.Parameters.Clear(); //and you can just define the parameters once //create new parameter @LabelContactTypeID paramTypeID = comm.CreateParameter(); paramTypeID.ParameterName = "@LabelContactTypeID"; paramTypeID.DbType = DbType.StringFixedLength; comm.Parameters.Add(paramTypeID); //Company Info foreach (var c in contact) { //create new parameter @LabelContactTypeID paramTypeID.Value = c.LabelContactTypeID; //create new parameter @ContactDetails param = comm.CreateParameter(); param.ParameterName = "@ContactDetails"; param.Value = c.ContactDetail; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Status param = comm.CreateParameter(); param.ParameterName = "@Status"; param.Value = c.Status; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); //create new parameter @Notes param = comm.CreateParameter(); param.ParameterName = "@Notes"; param.Value = c.Notes; param.DbType = DbType.StringFixedLength; comm.Parameters.Add(param); try { if (GenericDataAccess.ExecuteNonQuery(comm) == -1) return false; // this syntax is not what I am used to // i useally just comm.ExecuteNonQuer(); } catch { return false; } } return true; }