image from resource

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i write this code for insert an image in excel's file:

C#

// ok lines
Microsoft.Office.Interop.Excel.Application xlApp;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
 object misValue = System.Reflection.Missing.Value;
xlApp = new Microsoft.Office.Interop.Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

// line to modify
xlWorkSheet.Shapes.AddPicture(@"C:\Users\fedand\Pictures\TElogoSquare.jpg", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 450, 0, 45, 45);

I'd like to use an image in resource.
I have to change the string "C:\Users\fedand\Pictures\TElogoSquare.jpg", but how?

thanks

Posted 30-Jul-14 4:21am

Andrea Feduzzi

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-07-30T06:02:00

In addition to Solution 1:

Yes, both AddPicture* methods required file name:
http://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel.shapes.addpicture.ASPX[^],
http://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel.shapes.addpicture2.ASPX[^].

So, probably the only thing you can do is to save your resource in a temporary file, use this file and remove it later. First, to get a resource, look at the auto-generated resource file (I assume you use .resx resource). You should better create a resource from an image file created in your project, using "Add Existing File". In the auto-generated C# file, you will find a static property of the type Image with the name similar to the name of the original file. Just use it. This is how you save it in a file:
http://msdn.microsoft.com/en-us/library/ktx83wah%28v=vs.110%29.aspx[^].

This is how you can get a file name for a temporary file: http://msdn.microsoft.com/en-us/library/system.io.path.gettempfilename%28v=vs.110%29.aspx[^].

And this is how you delete it: http://msdn.microsoft.com/en-us/library/system.io.file.delete%28v=vs.110%29.aspx[^].

[EDIT]

Alternatively, consider using Open XML SDK instead of Office Interop. Here are the warning from Microsoft against using Interop:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q257757#kb2[^],
http://support.microsoft.com/kb/257757/en-us[^].

Please see this answer by Mika Wendelius: Creating basic Excel workbook with Open XML[^].

See also my past answer: How to add microsoft excel 15.0 object library from Add Reference in MS Visual Studio 2010[^].

—SA

Richard MacCutchan · Answer 2 · 2014-07-30T05:20:00

Solution 1

Since the AddPicture method requires a filename as the first parameter you cannot do what you are asking.

Posted 30-Jul-14 5:20am

Richard MacCutchan

Comments

Maciej Los 30-Jul-14 14:27pm

Short and to the point, +5!

Richard MacCutchan 31-Jul-14 2:27am

Thanks.

Sergey Alexandrovich Kryukov 30-Jul-14 16:13pm

Agree (voted 4), but, in principle, it could be done by creation of a temporary file. Also, maybe the use of Open XML SDK would offer better options, not sure.
—SA

Richard MacCutchan 31-Jul-14 2:28am

Of course that is correct.

Andrea Feduzzi · Answer 3 · 2014-07-31T21:05:00

Solution 3

It's not possible to use an internal resourse?
I thought that my was a very easy question!

Posted 31-Jul-14 21:05pm