'Declaration
 
Public Property RowType As PgSqlRowType

public PgSqlRowType RowType {get; set;}

Property Value

The RowType and RowTypeName properties are linked. Therefore, setting the RowType changes the RowTypeName to value of PgSqlRowType.Name property. When you set RowTypeName property, RowType becomes a null reference (Nothing in Visual Basic).

The RowType property can be used when you provide data as string and want to have it parsed as certain composite type. The other way to pass a PgSqlRow as parameter value is to assign a PgSqlRow object directly to Devart.Common.DbParameterBase.Value property.

The following example demonstrates how to construct a PgSqlRow object and use it as parameter value.

CREATE TYPE tperson AS (name text, age integer)

CREATE TABLE personnel (id integer, person tperson)

static void InsertDataWithParameters(PgSqlConnection conn)
{
  string str = "INSERT INTO personnel VALUES (:ID, :ROW)";
  PgSqlCommand pgCommand = new PgSqlCommand(str,conn);
  //Create instance of PgSqlRow and fill with data
  PgSqlRow pgRow = new PgSqlRow("tperson",conn);
  pgRow[0] = "Fred";
  pgRow[1] = 24;
  //provide parameters to command and execute it
  pgCommand.Parameters.Add("ID",3);
  pgCommand.Parameters.Add("ROW",pgRow);
  pgCommand.ExecuteNonQuery();
  Console.WriteLine("Record added");
}

Sub InsertDataWithParameters(ByVal conn As PgSqlConnection)
  Dim str As String = "INSERT INTO personnel VALUES (:ID, :ROW)"
  Dim pgCommand As PgSqlCommand = New PgSqlCommand(str, conn)
  'Create instance of PgSqlRow and fill with data
  Dim pgRow As PgSqlRow = New PgSqlRow("tperson", conn)
  pgRow(0) = "Fred"
  pgRow(1) = 24
  'provide parameters to command and execute it
  pgCommand.Parameters.Add("ID", 3)
  pgCommand.Parameters.Add("ROW", pgRow)
  pgCommand.ExecuteNonQuery()
  Console.WriteLine("Record added")
End Sub

Reference

PgSqlParameter Class
PgSqlParameter Members
RowTypeName Property