How to pass a table-value parameter in C#

How to pass a table-value parameter in C#

In C#, you can pass a table-valued parameter (TVP) to a SQL Server stored procedure using a DataTable object. TVPs allow you to send multiple rows of data to the database in a single call, which can be more efficient than individual insert or update statements. Here's how you can pass a TVP to a stored procedure:

  • Create a DataTable to represent your table-valued parameter: Define a DataTable with the same schema as the table-valued parameter expected by the stored procedure.
using System; using System.Data; using System.Data.SqlClient; public class TableValuedParameterExample { public void PassTableValuedParameterToSP() { DataTable myDataTable = new DataTable(); myDataTable.Columns.Add("Column1", typeof(int)); myDataTable.Columns.Add("Column2", typeof(string)); // Add rows to the DataTable myDataTable.Rows.Add(1, "Value1"); myDataTable.Rows.Add(2, "Value2"); myDataTable.Rows.Add(3, "Value3"); // Call the stored procedure with the DataTable as a parameter CallStoredProcedure(myDataTable); } private void CallStoredProcedure(DataTable myDataTable) { string connectionString = "YourConnectionString"; using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); using (SqlCommand command = new SqlCommand("YourStoredProcedureName", connection)) { command.CommandType = CommandType.StoredProcedure; // Create a SqlParameter with SqlDbType.Structured to represent the TVP SqlParameter parameter = new SqlParameter("@YourTVPName", SqlDbType.Structured) { TypeName = "YourTableTypeName", Value = myDataTable }; command.Parameters.Add(parameter); // Execute the stored procedure command.ExecuteNonQuery(); } } } }
  • In your SQL Server database, create a user-defined table type: Before using the table-valued parameter, you need to define a user-defined table type that matches the schema of the DataTable.
CREATE TYPE YourTableTypeName AS TABLE ( Column1 INT, Column2 NVARCHAR(50) )
  • Create your stored procedure to accept the table-valued parameter: Now, you can create your stored procedure to accept the table-valued parameter.
CREATE PROCEDURE YourStoredProcedureName @YourTVPName YourTableTypeName READONLY AS BEGIN -- Use the @YourTVPName table-valued parameter as needed in your stored procedure -- For example, you can use it in INSERT, UPDATE, or JOIN operations -- Example: INSERT INTO YourTargetTable (Column1, Column2) SELECT Column1, Column2 FROM @YourTVPName; END

When you call the PassTableValuedParameterToSP method, it will pass the DataTable as a table-valued parameter to the stored procedure YourStoredProcedureName, and the stored procedure can use the passed data in the TVP as needed.

Please note that using table-valued parameters is specific to SQL Server databases and may not be supported in other database systems. If you are working with a different database, you may need to use other mechanisms for bulk data insertions or consider different approaches for data handling.

Examples

  1. "C# pass table-valued parameter to SQL Server stored procedure"

    • Description: Learn how to pass a table-valued parameter to a SQL Server stored procedure in C#.
    • Code:
      // Example using SqlConnection and DataTable var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new SqlConnection("YourConnectionString")) { connection.Open(); var command = new SqlCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@YourTableTypeParameter", dataTable); command.ExecuteNonQuery(); }

  2. "C# pass table-valued parameter to SQL Server with Dapper"

    • Description: Use Dapper to pass a table-valued parameter to a SQL Server stored procedure in C#.
    • Code:
      // Example using SqlConnection and Dapper var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new SqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("YourStoredProcedure", new { YourTableTypeParameter = dataTable.AsTableValuedParameter("YourTableType") }, commandType: CommandType.StoredProcedure); }

  3. "C# pass table-valued parameter to Oracle stored procedure"

    • Description: Pass a table-valued parameter to an Oracle stored procedure in C#.
    • Code:
      // Example using OracleConnection and OracleParameter var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new OracleConnection("YourConnectionString")) { connection.Open(); var command = new OracleCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; command.Parameters.Add("YourTableTypeParameter", OracleDbType.Object).Value = dataTable; command.ExecuteNonQuery(); }

  4. "C# pass table-valued parameter to Oracle with ODP.NET and Dapper"

    • Description: Pass a table-valued parameter to an Oracle stored procedure using ODP.NET and Dapper in C#.
    • Code:
      // Example using OracleConnection, OracleCommand, and Dapper var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new OracleConnection("YourConnectionString")) { connection.Open(); connection.Execute("YourStoredProcedure", new { YourTableTypeParameter = dataTable.AsTableValuedParameter("YourTableType") }, commandType: CommandType.StoredProcedure); }

  5. "C# pass table-valued parameter to MySQL stored procedure"

    • Description: Pass a table-valued parameter to a MySQL stored procedure in C#.
    • Code:
      // Example using MySqlConnection and MySqlCommand var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new MySqlConnection("YourConnectionString")) { connection.Open(); var command = new MySqlCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; command.Parameters.Add(new MySqlParameter { ParameterName = "YourTableTypeParameter", MySqlDbType = MySqlDbType.Struct, Value = dataTable }); command.ExecuteNonQuery(); }

  6. "C# pass table-valued parameter to MySQL with Dapper"

    • Description: Use Dapper to pass a table-valued parameter to a MySQL stored procedure in C#.
    • Code:
      // Example using MySqlConnection and Dapper var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new MySqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("YourStoredProcedure", new { YourTableTypeParameter = dataTable.AsTableValuedParameter("YourTableType") }, commandType: CommandType.StoredProcedure); }

  7. "C# pass table-valued parameter to PostgreSQL stored procedure"

    • Description: Pass a table-valued parameter to a PostgreSQL stored procedure in C#.
    • Code:
      // Example using NpgsqlConnection and NpgsqlCommand var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new NpgsqlConnection("YourConnectionString")) { connection.Open(); var command = new NpgsqlCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@YourTableTypeParameter", dataTable); command.ExecuteNonQuery(); }

  8. "C# pass table-valued parameter to PostgreSQL with Dapper"

    • Description: Use Dapper to pass a table-valued parameter to a PostgreSQL stored procedure in C#.
    • Code:
      // Example using NpgsqlConnection and Dapper var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new NpgsqlConnection("YourConnectionString")) { connection.Open(); connection.Execute("YourStoredProcedure", new { YourTableTypeParameter = dataTable.AsTableValuedParameter("YourTableType") }, commandType: CommandType.StoredProcedure); }

  9. "C# pass table-valued parameter to SQLite stored procedure"

    • Description: Pass a table-valued parameter to a SQLite stored procedure in C#.
    • Code:
      // Example using SQLiteConnection and SQLiteCommand var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new SQLiteConnection("YourConnectionString")) { connection.Open(); var command = new SQLiteCommand("YourStoredProcedure", connection); command.CommandType = CommandType.StoredProcedure; command.Parameters.AddWithValue("@YourTableTypeParameter", dataTable); command.ExecuteNonQuery(); }

  10. "C# pass table-valued parameter to SQLite with Dapper"

    • Description: Use Dapper to pass a table-valued parameter to a SQLite stored procedure in C#.
    • Code:
      // Example using SQLiteConnection and Dapper var dataTable = new DataTable(); // Add columns and rows to the dataTable using (var connection = new SQLiteConnection("YourConnectionString")) { connection.Open(); connection.Execute("YourStoredProcedure", new { YourTableTypeParameter = dataTable.AsTableValuedParameter("YourTableType") }, commandType: CommandType.StoredProcedure); }

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