Pass table valued parameter using ADO.NET

Pass table valued parameter using ADO.NET

Table Valued Parameters (TVPs) are a feature in SQL Server that allows passing a table as a parameter to a stored procedure or a batch. Here's an example of how to pass a TVP using ADO.NET:

  • Define the TVP type in SQL Server:
CREATE TYPE [dbo].[MyTableType] AS TABLE( [Id] [int] NOT NULL, [Name] [nvarchar](50) NOT NULL )
  • Create a stored procedure that accepts the TVP as a parameter:
CREATE PROCEDURE [dbo].[MyStoredProcedure] @myTableType [dbo].[MyTableType] READONLY AS BEGIN -- Do something with the TVP END
  • Define the TVP parameter in C#:
SqlParameter tvpParam = new SqlParameter(); tvpParam.ParameterName = "@myTableType"; tvpParam.SqlDbType = SqlDbType.Structured; tvpParam.Value = myDataTable; tvpParam.TypeName = "dbo.MyTableType";
  • Create a DataTable object that represents the TVP:
DataTable myDataTable = new DataTable(); myDataTable.Columns.Add("Id", typeof(int)); myDataTable.Columns.Add("Name", typeof(string));
  • Fill the DataTable with data:
myDataTable.Rows.Add(1, "John"); myDataTable.Rows.Add(2, "Jane");
  • Open a SqlConnection and call the stored procedure using SqlCommand:
using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); using (SqlCommand command = new SqlCommand("dbo.MyStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; command.Parameters.Add(tvpParam); command.ExecuteNonQuery(); } }

In this example, we first define the TVP type in SQL Server using CREATE TYPE. We then create a stored procedure MyStoredProcedure that accepts the TVP as a parameter.

In C#, we define a SqlParameter object that represents the TVP parameter. We set the SqlDbType property to SqlDbType.Structured and set the Value property to a DataTable object that represents the TVP data. We also set the TypeName property to the name of the TVP type we defined in SQL Server.

We then create a DataTable object and fill it with data. We create a SqlConnection object, open the connection, create a SqlCommand object that calls the stored procedure, add the TVP parameter to the command, and execute the command using ExecuteNonQuery.

Examples

  1. "Pass table valued parameter ADO.NET example" Description: Developers often need to pass table-valued parameters using ADO.NET. Below is an example demonstrating how to achieve this.

    // C# ADO.NET code using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a table-valued parameter using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Execute the command command.ExecuteNonQuery(); } }

    In this example, a DataTable is used to represent the table-valued parameter, and the SqlCommand is configured to handle the table-valued parameter.

  2. "C# ADO.NET pass user-defined table type parameter" Description: When dealing with user-defined table types, the process is slightly different. Here's an example of passing a user-defined table type as a parameter in ADO.NET.

    // C# ADO.NET code using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the user-defined table type DataTable table = new DataTable("YourTableType"); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a user-defined table type parameter using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the user-defined table type parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; parameter.TypeName = "dbo.YourTableType"; // Specify the user-defined table type name // Execute the command command.ExecuteNonQuery(); } }

    This example demonstrates passing a user-defined table type as a parameter using ADO.NET.

  3. "ADO.NET pass TVP to stored procedure C#" Description: Developers often want to pass table-valued parameters to stored procedures using ADO.NET. The following example illustrates this process.

    // C# ADO.NET code using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a table-valued parameter using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Execute the command command.ExecuteNonQuery(); } }

    In this example, a DataTable is used to represent the table-valued parameter, and the SqlCommand is configured accordingly.

  4. "C# ADO.NET pass TVP to stored procedure example" Description: Passing a table-valued parameter to a stored procedure using ADO.NET is a common requirement. The following example demonstrates how to achieve this.

    // C# ADO.NET code using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a table-valued parameter using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Execute the command command.ExecuteNonQuery(); } }

    This example demonstrates the process of passing a table-valued parameter to a stored procedure using ADO.NET.

  5. "C# ADO.NET pass TVP to stored procedure with output" Description: When dealing with table-valued parameters and needing output from a stored procedure, the following example shows how to achieve this using ADO.NET.

    // C# ADO.NET code using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a table-valued parameter and an output parameter using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Add an output parameter if needed SqlParameter outputParameter = command.Parameters.Add("@OutputParameter", SqlDbType.Int); outputParameter.Direction = ParameterDirection.Output; // Execute the command command.ExecuteNonQuery(); // Access the value of the output parameter int outputValue = (int)outputParameter.Value; Console.WriteLine("Output parameter value: " + outputValue); } }

    In this example, an output parameter is added to the SqlCommand to capture the output value from the stored procedure.

  6. "C# ADO.NET pass TVP to stored procedure with transaction" Description: When transactions are involved, it's essential to pass table-valued parameters correctly. The following example demonstrates how to use ADO.NET with transactions.

    // C# ADO.NET code with transaction using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Start a transaction using (SqlTransaction transaction = connection.BeginTransaction()) { try { // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a table-valued parameter and associate it with the transaction using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection, transaction)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Execute the command command.ExecuteNonQuery(); // Commit the transaction transaction.Commit(); } } catch (Exception ex) { // Handle exceptions and roll back the transaction transaction.Rollback(); Console.WriteLine("Transaction failed: " + ex.Message); } } }

    This example demonstrates using ADO.NET with transactions when passing table-valued parameters to a stored procedure.

  7. "C# ADO.NET pass TVP to stored procedure with SqlBulkCopy" Description: In scenarios where high-performance data insertion is needed, using SqlBulkCopy along with ADO.NET can be efficient. The following example demonstrates passing table-valued parameters using SqlBulkCopy.

    // C# ADO.NET code with SqlBulkCopy using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Use SqlBulkCopy to efficiently insert data into a table using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection)) { bulkCopy.DestinationTableName = "YourDestinationTable"; bulkCopy.WriteToServer(table); } }

    In this example, SqlBulkCopy is utilized to efficiently insert data from a DataTable into a SQL Server table.

  8. "C# ADO.NET pass TVP to stored procedure with Entity Framework" Description: When using Entity Framework, passing table-valued parameters involves a slightly different approach. The following example demonstrates this process.

    // C# ADO.NET code with Entity Framework using (YourDbContext context = new YourDbContext()) { // Create a List of a custom entity type to represent the table-valued parameter List<YourEntity> entityList = new List<YourEntity> { new YourEntity { Column1 = 1, Column2 = "Value1" }, new YourEntity { Column1 = 2, Column2 = "Value2" } }; // Call a stored procedure using Entity Framework context.YourStoredProcedure(entityList); }

    In this example, a List of a custom entity type is used to represent the table-valued parameter when calling a stored procedure with Entity Framework.

  9. "C# ADO.NET pass TVP to stored procedure with SQL Server Table-Valued Parameter" Description: Utilizing SQL Server's built-in Table-Valued Parameter type simplifies the process. The following example demonstrates how to pass a TVP to a stored procedure using this type.

    // C# ADO.NET code with SQL Server TVP using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable to represent the table-valued parameter DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); // Populate the DataTable with data table.Rows.Add(1, "Value1"); table.Rows.Add(2, "Value2"); // Create a SqlCommand with a table-valued parameter using TVP using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command using SqlDbType.Structured SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Execute the command command.ExecuteNonQuery(); } }

    In this example, a DataTable is used to represent the table-valued parameter, and the SqlCommand is configured to use SqlDbType.Structured for TVP.

  10. "C# ADO.NET pass TVP to stored procedure with multiple columns" Description: Handling TVPs with multiple columns involves defining the DataTable accordingly. The following example demonstrates passing a TVP with multiple columns using ADO.NET.

    // C# ADO.NET code for TVP with multiple columns using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Create a DataTable with multiple columns DataTable table = new DataTable(); table.Columns.Add("Column1", typeof(int)); table.Columns.Add("Column2", typeof(string)); table.Columns.Add("Column3", typeof(DateTime)); // Populate the DataTable with data table.Rows.Add(1, "Value1", DateTime.Now); table.Rows.Add(2, "Value2", DateTime.Now); // Create a SqlCommand with a table-valued parameter using (SqlCommand command = new SqlCommand("YourStoredProcedure", connection)) { command.CommandType = CommandType.StoredProcedure; // Add the table-valued parameter to the command SqlParameter parameter = command.Parameters.AddWithValue("@YourParameter", table); parameter.SqlDbType = SqlDbType.Structured; // Execute the command command.ExecuteNonQuery(); } }

    In this example, a DataTable is created with multiple columns, and the SqlCommand is configured to handle the table-valued parameter accordingly.

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