LinkarClientRead Method

Linkar Framework for .NET and Core

Reads one or several records of a file, synchronously only, with MV input and output format.

Namespace: Linkar.Functions.Persistent.MV
Assembly: Linkar.Functions.Persistent.MV (in Linkar.Functions.Persistent.MV.dll) Version: 2.3.1

Syntax

C++

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public string Read(
	string filename,
	string recordIds,
	string dictionaries = "",
	ReadOptions readOptions = null,
	string customVars = "",
	int receiveTimeout = 0
)

Public Function Read ( 
	filename As String,
	recordIds As String,
	Optional dictionaries As String = "",
	Optional readOptions As ReadOptions = Nothing,
	Optional customVars As String = "",
	Optional receiveTimeout As Integer = 0
) As String

public:
String^ Read(
	String^ filename, 
	String^ recordIds, 
	String^ dictionaries = L"", 
	ReadOptions^ readOptions = nullptr, 
	String^ customVars = L"", 
	int receiveTimeout = 0
)

member Read : 
        filename : string * 
        recordIds : string * 
        ?dictionaries : string * 
        ?readOptions : ReadOptions * 
        ?customVars : string * 
        ?receiveTimeout : int 
(* Defaults:
        let _dictionaries = defaultArg dictionaries ""
        let _readOptions = defaultArg readOptions null
        let _customVars = defaultArg customVars ""
        let _receiveTimeout = defaultArg receiveTimeout 0
*)
-> string

Parameters

filename String: File name to read.
recordIds String: A list of item IDs to read, separated by the Record Separator character (30). Use StringFunctions.ComposeRecordIds to compose this string
dictionaries String (Optional): List of dictionaries to read, separated by space. If this list is not set, all fields are returned. You may use the format LKFLDx where x is the attribute number.
readOptions ReadOptions (Optional): Object that defines the different reading options of the Function: Calculated, dictClause, conversion, formatSpec, originalRecords.
customVars String (Optional): Free text sent to the database allows management of additional behaviours in SUB.LK.MAIN.CONTROL.CUSTOM, which is called when this parameter is set.
receiveTimeout Int32 (Optional): Maximum time in seconds that the client will wait for a response from the server. Default = 0 to wait indefinitely.

Return Value

String
The results of the operation.

Example

C++

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using Linkar;
using Linkar.Functions.Persistent.MV;

class Test
    {
        public string MyRead()
        {
            string result = "";
            try
            {
                CredentialOptions credentials = new CredentialOptions("127.0.0.1", "EPNAME", 11300, "admin", "admin");
                LinkarClient client = new LinkarClient();
                client.Login(credentials);
                ReadOptions options = new ReadOptions(true);
                result = client.Read("LK.CUSTOMERS", "2", "", options);
                client.Logout();
            }
            catch (Exception ex)
            {
                string error = ex.Message;
                // Do something
            }
            return result;
        }
    }

Imports Linkar
Imports Linkar.Functions.Persistent.MV

Class Test

    Public Function MyRead() As String
        Dim result As String = ""

        Try
            Dim credentials As CredentialOptions = New CredentialOptions("127.0.0.1", "EPNAME", 11300, "admin", "admin")

            Dim client As LinkarClient = New LinkarClient()

            client.Login(credentials)
            Dim options As ReadOptions = New ReadOptions(True)
            result = client.Read("LK.CUSTOMERS", "2", "", options)
            client.Logout()
        Catch ex As Exception
            Dim[error] As String = ex.Message
            ' Do something

        End Try

        Return result
  End Function
End Class

Reference

LinkarClient Class

Linkar.Functions.Persistent.MV Namespace