Question

我有这种方法将新公司插入数据库，但我遇到了List<Contacts>的问题，因为我希望能够为公司插入多个联系人。有人能帮助我吗？

enter image description here

public static bool AddNewCompany(Company company,List<Contacts> 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

将公司部分移至联系人上方。

将其放入联系循环

GenericDataAccess.ExecuteNonQuery(comm);

它增加了一些逻辑来检查是否有任何失败如果您想继续或立即返回，由您决定。

public static bool AddNewCompany(Company company,List<Contacts> 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;    
}

Answer 2

您的存储过程只为公司插入一个联系人。如果您想添加另一个联系人（或更多联系人），请编写另一个程序，该程序将使用插入数据库的最后一家公司的CompanyID插入新联系人。

我无法为您编写代码，因为我不知道这些表并且无法复制结果，但您应该从此代码创建另一个过程

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。它将使用相同的companyID（参考标识一对多）添加引用公司的新联系人。

编辑你应该这样做：

public static bool AddNewCompany(Company company,List<Contacts> 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部分添加新联系人，并插入所有其他联系人。将此方法命名为companyID。

将列表<contacts>插入表</contacts>

2 个答案: