将数据表从C＃传递到SQL Server 2008

如何将DataTable从C＃传递到SQL Server 2008？

例外 ：

表类型参数’@CurrentTableInitial’必须具有有效的类型名称。

表结构：

CREATE TABLE [dbo].[RegisterChoiceUserInitial]( [RegisterChoiceUserInitialID] [int] IDENTITY(1,1) NOT NULL, [UserId] [uniqueidentifier] NOT NULL, [RegisterChoiceUserInitialJob] [nvarchar](50) NULL, [RegisterChoiceUserInitialOrganization] [nvarchar](50) NULL, [RegisterChoiceUserInitialUnit] [nvarchar](50) NULL, [RegisterChoiceUserInitialMembershipType] [nvarchar](50) NULL, [RegisterChoiceUserInitialStart] [nvarchar](10) NULL, [RegisterChoiceUserInitialEnd] [nvarchar](10) NULL, CONSTRAINT [PK_RegisterChoiceUserInitial] PRIMARY KEY CLUSTERED ( [RegisterChoiceUserInitialID] ASC ) 

用户定义的类型：

 CREATE TYPE [dbo].[TableTypeInitial] AS TABLE( [ID] [int] NULL, [InitialJob] [nvarchar](50) NULL, [InitialOrganization] [nvarchar](50) NULL, [InitialUnit] [nvarchar](50) NULL, [InitialMembershipType] [nvarchar](50) NULL, [InitialMembershipStart] [nvarchar](10) NULL, [InitialMembershipEnd] [nvarchar](10) NULL ) 

存储过程：

 create PROCEDURE [dbo].[FinishRegisterChoiceUserInitial] ( @UserId uniqueidentifier, @TableVariable TableTypeInitial READONLY) AS BEGIN INSERT INTO [Election].[dbo].[RegisterChoiceUserInitial] ([UserId] ,[RegisterChoiceUserInitialJob] ,[RegisterChoiceUserInitialOrganization] ,[RegisterChoiceUserInitialUnit] ,[RegisterChoiceUserInitialMembershipType] ,[RegisterChoiceUserInitialStart] ,[RegisterChoiceUserInitialEnd]) SELECT @UserId AS UserId ,InitialJob ,InitialOrganization ,InitialUnit ,InitialMembershipType ,InitialMembershipStart ,InitialMembershipEnd FROM @TableVariable END 

数据表：

 DataTableInitial.Columns.Add(new DataColumn("ID", typeof(int))); DataTableInitial.Columns.Add(new DataColumn("InitialJob", typeof(String))); DataTableInitial.Columns.Add(new DataColumn("InitialOrganization", typeof(String))); DataTableInitial.Columns.Add(new DataColumn("InitialUnit", typeof(String))); DataTableInitial.Columns.Add(new DataColumn("InitialMembershipType", typeof(String))); DataTableInitial.Columns.Add(new DataColumn("InitialMembershipStart", typeof(String))); DataTableInitial.Columns.Add(new DataColumn("InitialMembershipEnd", typeof(String))); cmd.CommandText = "EXEC FinishRegisterChoiceUserInitial @UserId, @CurrentTableInitial "; cmd.Parameters.AddWithValue("@UserId",user.ProviderUserKey); DataTable TableInitial=(DataTable)ViewState["CurrentTableInitial"]; SqlParameter a = cmd.Parameters.AddWithValue("@CurrentTableInitial", TableInitial); a.SqlDbType = SqlDbType.Structured; cmd.ExecuteNonQuery(); 

Answer 1

你错过了a.TypeName =“dbo.TableTypeInitial”; 将此语句放在“a.SqlDbType = SqlDbType.Structured;”之前。

使用

 cmd.CommandText = "EXEC FinishRegisterChoiceUserInitial @UserId, @TableTypeInitial "; 

代替

 cmd.CommandText = "EXEC FinishRegisterChoiceUserInitial @UserId, @CurrentTableInitial "; 

Sql Server脚本：

  CREATE TABLE [Target] ( [ID] [int] NOT NULL PRIMARY KEY IDENTITY, [FirstName] [varchar](100)NOT NULL, [LastName] [varchar](100)NOT NULL, [Email] [varchar](200) NOT NULL ) CREATE TYPE [TargetUDT] AS TABLE ( [FirstName] [varchar](100)NOT NULL, [LastName] [varchar](100)NOT NULL, [Email] [varchar](200) NOT NULL ) CREATE PROCEDURE AddToTarget(@TargetUDT TargetUDT READONLY) AS BEGIN INSERT INTO [Target] SELECT * FROM @TargetUDT END 

示例代码：

 public static void StartProcess() { //Create a local data table to hold customer records DataTable dtCustomers = new DataTable("Customers"); DataColumn dcFirstName = new DataColumn("FirstName", typeof(string)); DataColumn dcLastName = new DataColumn("LastName", typeof(string)); DataColumn dcEmail = new DataColumn("Email", typeof(string)); dtCustomers.Columns.Add(dcFirstName); dtCustomers.Columns.Add(dcLastName); dtCustomers.Columns.Add(dcEmail); //Add customer 1 DataRow drCustomer = dtCustomers.NewRow(); drCustomer["FirstName"] = "AAA"; drCustomer["LastName"] = "XYZ"; drCustomer["Email"] = "[e-mail]"; dtCustomers.Rows.Add(drCustomer); //Add customer 2 drCustomer = dtCustomers.NewRow(); drCustomer["FirstName"] = "BBB"; drCustomer["LastName"] = "XYZ"; drCustomer["Email"] = "[e-mail]"; dtCustomers.Rows.Add(drCustomer); //Add customer 3 drCustomer = dtCustomers.NewRow(); drCustomer["FirstName"] = "CCC"; drCustomer["LastName"] = "XYZ"; drCustomer["Email"] = "[e-mail]"; dtCustomers.Rows.Add(drCustomer); //Create Connection object to connect to server/database SqlConnection conn = new SqlConnection(ConStr); conn.Open(); //Create a command object that calls the stored procedure SqlCommand cmdCustomer = new SqlCommand("AddToTarget", conn); cmdCustomer.CommandType = CommandType.StoredProcedure; //Create a parameter using the new SQL DB type viz. Structured to pass as table value parameter SqlParameter paramCustomer = cmdCustomer.Parameters.Add("@TargetUDT", SqlDbType.Structured); paramCustomer.Value = dtCustomers; //Execute the query cmdCustomer.ExecuteNonQuery(); }