SqlBulkCopyColumnMappingCollection.Add 方法

參考

定義

命名空間:: Microsoft.Data.SqlClient

組件:: Microsoft.Data.SqlClient.dll

套件:: Microsoft.Data.SqlClient v1.0.19269.1

套件:: Microsoft.Data.SqlClient v1.1.4

套件:: Microsoft.Data.SqlClient v2.0.1

套件:: Microsoft.Data.SqlClient v2.1.4

套件:: Microsoft.Data.SqlClient v3.0.1

套件:: Microsoft.Data.SqlClient v3.1.0

套件:: Microsoft.Data.SqlClient v4.0.1

套件:: Microsoft.Data.SqlClient v4.1.0

套件:: Microsoft.Data.SqlClient v5.0.0

套件:: Microsoft.Data.SqlClient v5.1.0

套件:: Microsoft.Data.SqlClient v5.2.0

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

多載

Add(SqlBulkCopyColumnMapping)	將指定對應加入 SqlBulkCopyColumnMappingCollection。
Add(Int32, Int32)	使用序數指定來源和目的資料行，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。
Add(Int32, String)	對來源資料行使用序數，對目的資料行使用字串，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。
Add(String, Int32)	使用資料行名稱描述來源資料行，並使用序數指定目的資料行，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。
Add(String, String)	使用資料行名稱指定來源和目的資料行，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。

Add(SqlBulkCopyColumnMapping)

將指定對應加入 SqlBulkCopyColumnMappingCollection。

public:
 Microsoft::Data::SqlClient::SqlBulkCopyColumnMapping ^ Add(Microsoft::Data::SqlClient::SqlBulkCopyColumnMapping ^ bulkCopyColumnMapping);

public Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping Add (Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping bulkCopyColumnMapping);

member this.Add : Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Function Add (bulkCopyColumnMapping As SqlBulkCopyColumnMapping) As SqlBulkCopyColumnMapping

參數

bulkCopyColumnMapping: SqlBulkCopyColumnMapping

SqlBulkCopyColumnMapping 物件，描述要加入集合的對應。

傳回

SqlBulkCopyColumnMapping

SqlBulkCopyColumnMapping 物件。

範例

下列範例會從 AdventureWorks 範例資料庫中的來源資料表，將資料大量複製到相同資料庫中的目的地資料表。雖然目的地中的資料行數目符合來源中的資料行數目，但資料行名稱和序數位置不相符。 SqlBulkCopyColumnMapping 物件可用來建立大量複製的資料行對應。

重要

除非您已建立工作資料表，如大量複製範例安裝程式中所述，否則不會執行此範例。這個程式碼僅是為了示範使用 SqlBulkCopy 的語法而提供。如果來源和目的地資料表位於相同的SQL Server實例中，使用 Transact-SQL INSERT … SELECT 語句來複製資料會比較簡單且更快速。

// <Snippet1>
using System;
using System.Data;
using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object.
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // Set up the column mappings by name.
                SqlBulkCopyColumnMapping mapID =
                    new SqlBulkCopyColumnMapping("ProductID", "ProdID");
                bulkCopy.ColumnMappings.Add(mapID);

                SqlBulkCopyColumnMapping mapName =
                    new SqlBulkCopyColumnMapping("Name", "ProdName");
                bulkCopy.ColumnMappings.Add(mapName);

                SqlBulkCopyColumnMapping mapMumber =
                    new SqlBulkCopyColumnMapping("ProductNumber", "ProdNum");
                bulkCopy.ColumnMappings.Add(mapMumber);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}
// </Snippet1>

適用於

Add(Int32, Int32)

使用序數指定來源和目的資料行，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。

public:
 Microsoft::Data::SqlClient::SqlBulkCopyColumnMapping ^ Add(int sourceColumnIndex, int destinationColumnIndex);

public Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping Add (int sourceColumnIndex, int destinationColumnIndex);

member this.Add : int * int -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Function Add (sourceColumnIndex As Integer, destinationColumnIndex As Integer) As SqlBulkCopyColumnMapping

參數

sourceColumnIndex: Int32

資料來源內來源資料行的序數位置。

destinationColumnIndex: Int32

目的資料表中目的資料行的序數位置。

傳回

SqlBulkCopyColumnMapping

資料行對應。

範例

下列範例會從 AdventureWorks 範例資料庫中的來源資料表，將資料大量複製到相同資料庫中的目的地資料表。雖然目的地中的資料行數目符合來源中的資料行數目，但資料行名稱和序數位置不相符。 SqlBulkCopyColumnMapping 物件可用來使用來源和目的地資料行的序數位置來建立大量複製的資料行對應。

重要

using System;
using System.Data;
using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object. 
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // The column order in the source doesn't match the order 
                // in the destination, so ColumnMappings must be defined.
                bulkCopy.ColumnMappings.Add(0, 0);
                bulkCopy.ColumnMappings.Add(1, 2);
                bulkCopy.ColumnMappings.Add(2, 1);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

備註

集合中的對應必須是統一的：所有整數/整陣列、所有字串/字串組、所有整數/字串組，或所有字串/整陣列。如果您嘗試新增與集合中其他人不同的對應， InvalidOperationException 則會擲回。

適用於

Add(Int32, String)

對來源資料行使用序數，對目的資料行使用字串，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。

public:
 Microsoft::Data::SqlClient::SqlBulkCopyColumnMapping ^ Add(int sourceColumnIndex, System::String ^ destinationColumn);

public Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping Add (int sourceColumnIndex, string destinationColumn);

member this.Add : int * string -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Function Add (sourceColumnIndex As Integer, destinationColumn As String) As SqlBulkCopyColumnMapping

參數

sourceColumnIndex: Int32

資料來源內來源資料行的序數位置。

destinationColumn: String

目的資料表中目的資料行的名稱。

傳回

SqlBulkCopyColumnMapping

資料行對應。

範例

重要

using System;
using System.Data;
using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object. 
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // The column order in the source doesn't match the order 
                // in the destination, so ColumnMappings must be defined.
                bulkCopy.ColumnMappings.Add(0, 0);
                bulkCopy.ColumnMappings.Add(1, 2);
                bulkCopy.ColumnMappings.Add(2, 1);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

備註

適用於

Add(String, Int32)

使用資料行名稱描述來源資料行，並使用序數指定目的資料行，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。

public:
 Microsoft::Data::SqlClient::SqlBulkCopyColumnMapping ^ Add(System::String ^ sourceColumn, int destinationColumnIndex);

public Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping Add (string sourceColumn, int destinationColumnIndex);

member this.Add : string * int -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Function Add (sourceColumn As String, destinationColumnIndex As Integer) As SqlBulkCopyColumnMapping

參數

sourceColumn: String

資料來源中來源資料行的名稱。

destinationColumnIndex: Int32

目的資料表中目的資料行的序數位置。

傳回

SqlBulkCopyColumnMapping

資料行對應。

範例

重要

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object. 
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // The column order in the source doesn't match the order 
                // in the destination, so ColumnMappings must be defined.
                bulkCopy.ColumnMappings.Add(0, 0);
                bulkCopy.ColumnMappings.Add(1, 2);
                bulkCopy.ColumnMappings.Add(2, 1);

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

備註

適用於

Add(String, String)

使用資料行名稱指定來源和目的資料行，建立新的 SqlBulkCopyColumnMapping，並將其加入集合。

public:
 Microsoft::Data::SqlClient::SqlBulkCopyColumnMapping ^ Add(System::String ^ sourceColumn, System::String ^ destinationColumn);

public Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping Add (string sourceColumn, string destinationColumn);

member this.Add : string * string -> Microsoft.Data.SqlClient.SqlBulkCopyColumnMapping

Public Function Add (sourceColumn As String, destinationColumn As String) As SqlBulkCopyColumnMapping

參數

sourceColumn: String

資料來源中來源資料行的名稱。

destinationColumn: String

目的資料表中目的資料行的名稱。

傳回

SqlBulkCopyColumnMapping

資料行對應。

範例

下列範例會從 AdventureWorks 範例資料庫中的來源資料表，將資料大量複製到相同資料庫中的目的地資料表。雖然目的地中的資料行數目符合來源中的資料行數目，但資料行名稱和序數位置不相符。程式碼會藉由指定資料行名稱來 SqlBulkCopyColumnMapping 建立物件。

重要

using System;
using System.Data;
using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = GetConnectionString();
        // Open a sourceConnection to the AdventureWorks database.
        using (SqlConnection sourceConnection =
                   new SqlConnection(connectionString))
        {
            sourceConnection.Open();

            // Perform an initial count on the destination table.
            SqlCommand commandRowCount = new SqlCommand(
                "SELECT COUNT(*) FROM " +
                "dbo.BulkCopyDemoDifferentColumns;",
                sourceConnection);
            long countStart = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Starting row count = {0}", countStart);

            // Get data from the source table as a SqlDataReader.
            SqlCommand commandSourceData = new SqlCommand(
                "SELECT ProductID, Name, " +
                "ProductNumber " +
                "FROM Production.Product;", sourceConnection);
            SqlDataReader reader =
                commandSourceData.ExecuteReader();

            // Set up the bulk copy object. 
            using (SqlBulkCopy bulkCopy =
                       new SqlBulkCopy(connectionString))
            {
                bulkCopy.DestinationTableName =
                    "dbo.BulkCopyDemoDifferentColumns";

                // The column order in the source doesn't match the order 
                // in the destination, so ColumnMappings must be defined.
                bulkCopy.ColumnMappings.Add("ProductID", "ProdID");
                bulkCopy.ColumnMappings.Add("Name", "ProdName");
                bulkCopy.ColumnMappings.Add("ProductNumber", "ProdNum");

                // Write from the source to the destination.
                try
                {
                    bulkCopy.WriteToServer(reader);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
                finally
                {
                    // Close the SqlDataReader. The SqlBulkCopy
                    // object is automatically closed at the end
                    // of the using block.
                    reader.Close();
                }
            }

            // Perform a final count on the destination 
            // table to see how many rows were added.
            long countEnd = System.Convert.ToInt32(
                commandRowCount.ExecuteScalar());
            Console.WriteLine("Ending row count = {0}", countEnd);
            Console.WriteLine("{0} rows were added.", countEnd - countStart);
            Console.WriteLine("Press Enter to finish.");
            Console.ReadLine();
        }
    }

    private static string GetConnectionString()
    // To avoid storing the sourceConnection string in your code, 
    // you can retrieve it from a configuration file. 
    {
        return "Data Source=(local); " +
            " Integrated Security=true;" +
            "Initial Catalog=AdventureWorks;";
    }
}

備註

適用於

共用方式為

SqlBulkCopyColumnMappingCollection.Add 方法

定義

多載

Add(SqlBulkCopyColumnMapping)

參數

傳回

範例

適用於

Add(Int32, Int32)

參數

傳回

範例

備註

適用於

Add(Int32, String)

參數

傳回

範例

備註

適用於

Add(String, Int32)

參數

傳回

範例

備註

適用於

Add(String, String)

參數

傳回

範例

備註

適用於

其他資源