GetFieldType(Int32) Method
Gets the
System.Type that is the data type of the object.
public override Type GetFieldType(
int
)
'Declaration
Public Overloads Overrides Function GetFieldType( _
ByVal As Integer _
) As Type
Parameters
- i
Return Value
The
System.Type that is the data type of the object.
This sample shows how to retrieve names and types of all columns in a table.
public void GetFields(PgSqlConnection pgConnection)
{
PgSqlCommand cmd = new PgSqlCommand("SELECT * FROM Test.Dept");
cmd.Connection = pgConnection;
pgConnection.Open();
try
{
PgSqlDataReader reader = cmd.ExecuteReader();
reader.Read();
for (int i=0;i < reader.FieldCount;i++)
{
string fieldType = reader.GetDataTypeName(i);
string fieldName = reader.GetName(i);
string fieldType2 = reader.GetFieldType(i).FullName;
Console.WriteLine(fieldName+"\t"+ fieldType+"\t"+ fieldType2);
}
reader.Close();
}
finally
{
pgConnection.Close();
}
}
Public Sub GetFields(ByVal pgConnection As PgSqlConnection)
Dim cmd As PgSqlCommand = New PgSqlCommand("SELECT * FROM Test.Dept")
cmd.Connection = pgConnection
pgConnection.Open()
Try
Dim reader As PgSqlDataReader = cmd.ExecuteReader()
reader.Read()
Dim i As Integer
For i = 0 To reader.FieldCount - 1
Dim fieldType As String = reader.GetDataTypeName(i)
Dim fieldName As String = reader.GetName(i)
Dim fieldType2 As String = reader.GetFieldType(i).FullName
Console.WriteLine(fieldName & Chr(9) & fieldType & Chr(9) & fieldType2)
Next i
reader.Close()
Finally
pgConnection.Close()
End Try
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2