I want to create external component for export written in C# .NET. I used sample export script from ABBYY FlexiCapture 11 HELP and follow all steps described in HELP, but I have some trouble during building DLL file.
Part of script from help:
using System;
using System.Runtime.InteropServices;
using System.IO;
using ABBYY.FlexiCapture;
namespace ExportLibrary1
{
// The interface of the export component which can be accessed from the script
// When creating a new component, generate a new GUID
[Guid("32B10C3B-EEA3-4194-B0A0-E358C310225A")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface _cExport
{
[DispId(1)]
void ExportDocument(ref IExportDocument DocRef, ref FCTools Tools);
}
// The class that implements export component functionality
// When creating a new component, generate a new GUID
// and set your ProgId
[Guid("3BA19BD7-C6DC-4f63-BC08-0D95254DADC3")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("ExportLibrary1.Export")]
[ComVisible(true)]
public class Export : _cExport
{
public Export()
{
}
// The function carries out document export: creates an export folder and
// saves in it page image files,
// the text file with document fields, and information about the document
public void ExportDocument( ref IExportDocument docRef, ref FCTools FCTools )
{
try
{
string exportFolder = createExportFolder( docRef.DefinitionName );
exportImages( docRef, FCTools, exportFolder );
// creating the text file
string fileName = exportFolder + "//" + "doc.txt";
StreamWriter sw = File.CreateText( fileName );
// exporting info about document
exportDocInfo( docRef, sw );
// exporting fields
sw.WriteLine( "Fields:" );
exportFields( docRef.Children, sw, "" );
sw.Close();
}
catch( Exception e )
{
docRef.Action.Succeeded = false;
docRef.Action.ErrorMessage = e.ToString();
}
}
}
}
When I try to build DLL I got error :
Error 2 'ref ABBYY.FlexiCapture.FCTools': static types cannot be used as parameters C:\Projects\VBProjects\ExportLibrary1\ExportLibrary1\Class1.cs 34 21 ExportLibrary1
I come from Java world and I don’t know that is possible to send static class as a parameter to the function in C# .NET.
I changed ref FCTools FCTools as Object Tools in _cExport interface > ExportDocument function and then I can build DLL file and run component too from FC, but now I have a problem with calling static functions of FCTools static class. If I call any function(example: FCTools.ShowMessage(“Test”)) I got [Processing error]: Object reference not set to an instance of an object.
How to solve this problem?
Part of script from help:
using System;
using System.Runtime.InteropServices;
using System.IO;
using ABBYY.FlexiCapture;
namespace ExportLibrary1
{
// The interface of the export component which can be accessed from the script
// When creating a new component, generate a new GUID
[Guid("32B10C3B-EEA3-4194-B0A0-E358C310225A")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface _cExport
{
[DispId(1)]
void ExportDocument(ref IExportDocument DocRef, ref FCTools Tools);
}
// The class that implements export component functionality
// When creating a new component, generate a new GUID
// and set your ProgId
[Guid("3BA19BD7-C6DC-4f63-BC08-0D95254DADC3")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("ExportLibrary1.Export")]
[ComVisible(true)]
public class Export : _cExport
{
public Export()
{
}
// The function carries out document export: creates an export folder and
// saves in it page image files,
// the text file with document fields, and information about the document
public void ExportDocument( ref IExportDocument docRef, ref FCTools FCTools )
{
try
{
string exportFolder = createExportFolder( docRef.DefinitionName );
exportImages( docRef, FCTools, exportFolder );
// creating the text file
string fileName = exportFolder + "//" + "doc.txt";
StreamWriter sw = File.CreateText( fileName );
// exporting info about document
exportDocInfo( docRef, sw );
// exporting fields
sw.WriteLine( "Fields:" );
exportFields( docRef.Children, sw, "" );
sw.Close();
}
catch( Exception e )
{
docRef.Action.Succeeded = false;
docRef.Action.ErrorMessage = e.ToString();
}
}
}
}
When I try to build DLL I got error :
Error 2 'ref ABBYY.FlexiCapture.FCTools': static types cannot be used as parameters C:\Projects\VBProjects\ExportLibrary1\ExportLibrary1\Class1.cs 34 21 ExportLibrary1
I come from Java world and I don’t know that is possible to send static class as a parameter to the function in C# .NET.
I changed ref FCTools FCTools as Object Tools in _cExport interface > ExportDocument function and then I can build DLL file and run component too from FC, but now I have a problem with calling static functions of FCTools static class. If I call any function(example: FCTools.ShowMessage(“Test”)) I got [Processing error]: Object reference not set to an instance of an object.
How to solve this problem?
bject reference not set to an instance of an object.