Question

Could not convert variant of type / blahdieblahdieblah (Dispatch) into type / blahdieblahd string

Asked by: PeterdeB

Hi Folks,

I have an error message which causes me a lof of psychological mumbo jumbo. Now I attached the procedure causing this eror but if you need more info, the complete unit or project even with the components please let me know.

My addin searches an entire excel 2k3 workbook for a string, this goes without any errors unless the workbook contains too much data? I'm not sure about this, some workbooks cause no problems but this one does.

If you need more info please let me know!

Thanks,

Dweeep

Ps I attached a screenshot from the error I get from within excel 2k3

procedure TCoPDBSearch.DoShow;
var
  Sheet_name : string;
    i, r, c,x,y ,last_column, last_row :integer;
 sheet: variant;
 Iedt: IaxpEdit;
  frmSearch: TfrmSearch;
begin
  frmSearch := TfrmSearch.CreateEx(Self, PDBAddinVer);
  try
     for i:= 1 to HostApp.ActiveWorkbook.WorkSheets.Count do
  begin 
    Sheet_name := Hostapp.ActiveWorkbook.WorkSheets[i].Name;
     Sheet := hostapp.Worksheets.Item[Sheet_name];
     Sheet.Activate;
     Sheet.Cells.SpecialCells(xlCellTypeLastCell,EmptyParam).Activate;
     Last_column := hostapp.ActiveCell.Column;
     Last_row := hostapp.ActiveCell.Row;
     r := 0;
     repeat
        inc(r);
        c := 0;
        repeat
           inc(c);
            IEdt := FindControl(EdtSearchTag, axpEdit) as IaxpEdit;
            if pos(iedt.Text,hostapp.Cells.Item[r,c]) > 0
           then
           // add item to a memo for export
            frmSearch.mmo1.Lines.Add(Trim(hostapp.Cells.Item[r,c].Value));
 until c = Last_column;
     until r = Last_row;
  With frmSearch.mmo1 do
  for x := Lines.Count-1 Downto 0 Do
  for y := Lines.Count-1 Downto 0 Do
if (x <> y) Then If Uppercase(Trim(Lines[x])) = Uppercase(Trim(Lines[y])) Then
 begin
   Lines.Delete(x);
   continue; // it is necessary to break the inner loop once the line is deleted
 end;
  end;
  frmSearch.stat1.Panels[0].Text := PDBSW;
  frmSearch.edtPath.Text := GetShortPath(GetModuleName(hInstance),15);
   frmSearch.stat1.Panels[2].Text := IntToStr(frmSearch.mmo1.Lines.count)+' item(s) found';
   frmSearch.ShowModal;
  finally
    frmSearch.Free;
  end;
end;
                                  
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Asked On
2009-11-03 at 07:24:28ID24867345
Topic

Delphi Programming

Participating Experts
1
Points
500
Comments
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Answers

 

by: PeterdeBPosted on 2009-11-03 at 07:27:07ID: 25729823

Ps I would like the addin to only search the first column of each sheet, instead of searching the entire sheets, any code on that one?

Dweep

 

by: epasquierPosted on 2009-11-03 at 07:39:36ID: 25729983

I have some correction you might want to check :

when you access your cells, you use
hostapp.Cells.Item[r,c]
Is it not Sheet.Cells.... ?

And a question I already asked in a previous post : why do you need IEdt findcontrol to be executed each loop ?

to search only in the first column :

Sheet.Cells.SpecialCells(xlCellTypeLastCell,EmptyParam).Activate;
IEdt := FindControl(EdtSearchTag, axpEdit) as IaxpEdit;
for i:=1 to hostapp.ActiveCell.Row do 
 begin
  if pos(iedt.Text,Sheet.Cells.Item[i,1]) > 0 then
            frmSearch.mmo1.Lines.Add(Trim(Sheet.Cells.Item[r,c].Value));
 end;

                                              
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by: PeterdeBPosted on 2009-11-03 at 09:34:54ID: 25731375

Hi epasquier,

Good question, no answer though. I will try your code. Thanks mate!

Dweeep

 

by: PeterdeBPosted on 2009-11-03 at 09:43:41ID: 25731470

epasquier,

I implemented your code but it results in an error I fail to comprehend or tackle. I included the modified procedure.

[Error] PDBSearch_IMPL.pas(125): Assignment to FOR-Loop variable 'i'
[Fatal Error] PDBSearch.dpr(7): Could not compile used unit 'PDBSearch_IMPL.pas'

procedure TCoPDBSearch.DoShow;
var
  Sheet_name : string;
    i, r, c,x,y ,last_column, last_row :integer;
 sheet: variant;
 Iedt: IaxpEdit;
  frmSearch: TfrmSearch;
begin
  frmSearch := TfrmSearch.CreateEx(Self, PDBAddinVer);
  try
     for i:= 1 to HostApp.ActiveWorkbook.WorkSheets.Count do
  begin 
    Sheet_name := Hostapp.ActiveWorkbook.WorkSheets[i].Name;
     Sheet := hostapp.Worksheets.Item[Sheet_name];
     Sheet.Activate;
     Sheet.Cells.SpecialCells(xlCellTypeLastCell,EmptyParam).Activate;
IEdt := FindControl(EdtSearchTag, axpEdit) as IaxpEdit; 
for i:=1 to hostapp.ActiveCell.Row do
 begin
  if pos(iedt.Text,Sheet.Cells.Item[i,1]) > 0 then
            frmSearch.mmo1.Lines.Add(Trim(Sheet.Cells.Item[r,c].Value));
 end;
    { Sheet.Cells.SpecialCells(xlCellTypeLastCell,EmptyParam).Activate;
     Last_column := hostapp.ActiveCell.Column;
     Last_row := hostapp.ActiveCell.Row;
     r := 0;
     repeat
        inc(r);
        c := 0;
        repeat
           inc(c);
            IEdt := FindControl(EdtSearchTag, axpEdit) as IaxpEdit;
            if pos(iedt.Text,hostapp.Cells.Item[r,c]) > 0
           then
           // add item to a memo for export
            frmSearch.mmo1.Lines.Add(Trim(hostapp.Cells.Item[r,c].Value));
 until c = Last_column;
     until r = Last_row;   }
  With frmSearch.mmo1 do
  for x := Lines.Count-1 Downto 0 Do
  for y := Lines.Count-1 Downto 0 Do
if (x <> y) Then If Uppercase(Trim(Lines[x])) = Uppercase(Trim(Lines[y])) Then
 begin
   Lines.Delete(x);
   continue; // it is necessary to break the inner loop once the line is deleted
 end;
  end;
  frmSearch.stat1.Panels[0].Text := PDBSW;
 // frmSearch.edtPath.Text := GetShortPath(GetModuleName(hInstance),15);
   frmSearch.stat1.Panels[2].Text := IntToStr(frmSearch.mmo1.Lines.count)+' item(s) found';
   frmSearch.ShowModal;
  finally
    frmSearch.Free;
  end;
end;
                                              
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by: epasquierPosted on 2009-11-03 at 09:50:03ID: 25731536

you use twice the i variable for 2 interleaved loops

I have simplified it a bit so that we can look better at the errors that could still be there

procedure TCoPDBSearch.DoShow;
var
 Sheet_name : string;
 i, j:integer;
 Str:String;
 sheet: variant;
 Iedt: IaxpEdit;
 frmSearch: TfrmSearch;
begin
 frmSearch := TfrmSearch.CreateEx(Self, PDBAddinVer);
 try
  for i:= 1 to HostApp.ActiveWorkbook.WorkSheets.Count do
   begin 
    Sheet_name := Hostapp.ActiveWorkbook.WorkSheets[i].Name;
    Sheet := hostapp.Worksheets.Item[Sheet_name];
    Sheet.Activate;
    Sheet.Cells.SpecialCells(xlCellTypeLastCell,EmptyParam).Activate;
    IEdt := FindControl(EdtSearchTag, axpEdit) as IaxpEdit; 
    for j:=1 to hostapp.ActiveCell.Row do
     begin
      Str:=Trim(Sheet.Cells.Item[j,1].Value);
      if pos(iedt.Text,Str) > 0 then
       begin
        With frmSearch.mmo1.Lines do if IndexOf(Str)<0 Then Add(Str);
       end; 
     end;
   end;
  frmSearch.stat1.Panels[0].Text := PDBSW;
  frmSearch.stat1.Panels[2].Text := IntToStr(frmSearch.mmo1.Lines.count)+' item(s) found';
  frmSearch.ShowModal;
 finally
  frmSearch.Free;
 end;
end;

                                              
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by: PeterdeBPosted on 2009-11-03 at 14:13:06ID: 25734399

epasquier guess what? I just implemented your code and it is as if you boosted the performance beyond compare!

Apart from that I am unable to reproduce the error that caused me to start this topic!

I will consider this one solved, thanks!

Dweeeeep

 

by: PeterdeBPosted on 2009-11-03 at 14:13:24ID: 31649455

thanks!

 

by: epasquierPosted on 2009-11-03 at 14:48:01ID: 25734745

PeterdeB guess what? I am not surprised a bit ;o)
have been telling you that some strange things were lying there since a few post already, but without knowing exactly what you where doing....

20120131-EE-VQP-002

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