com-interop

I need to access a printer to know if is active and have paper. I'm using silverlight 4 out of box with elevated trust. At this point I have: string cFileName = "temp.txt"; string cAction = "print"; using (dynamic fso = AutomationFactory.CreateObject(@"Scripting.FileSystemObject")) { dynamic file = fso.CreateTextFile(cFileName, true); file.WriteLine("First line text"); file.WriteLine("second line text"); file.Close(); } //Print dynamic shell = AutomationFactory.CreateObject("Shell.Application"); shell.ShellExecute(cFileName, "", "", cAction, 1); I'm using a temp file txt to creat my print page

I am writing an application which uses the Microsoft.Office.Interop.Excel assembly to export/import data from Excel spreadsheets. Everything was going fine (except for 1 based indexing and all those optional parameters!), until I tried to use conditional formatting. When I call Range.FormatConditions.Add I get a MissingMethodException telling me that no such method exists. This happens in both Vista and XP. Here's an example of the code that generates the exception: //1. Add a reference to Microsoft.Office.Interop.Excel (version 11.0.0.0) //2. Compile and run the following code: using

Generally we import a tlb file at the starting of the program like #include < stdio.h > #import " sql.tlb " But i need to import a tlb file when certain condition meets in the middle of the program how can i do this. to load dll there is LoadLibrary() but to load tlb can i use LoadLibrary() . Since tlb is generated by using .dll? You can load a type library at runtime using LoadTypeLib . ITypeLib *ptlib; LoadTypeLib("sql.tlb", &ptlib); What you do then with ptlib is kind of up in the air as you don't really say what you are trying to do with it. ptlib is an object supporting the ITypeLib

I have a simple web application which uses the Excel Interop libraries to read and insert into an Excel spreadsheet. I'm taking my due diligence to ensure that I don't use two dots and to ensure that all COM object references are released by using Marshal.ReleaseComObject() and GC.Collect() , but there is still an EXCEL.EXE process running on my server. I've created a Windows Forms application that uses the same object releasing process as in my ASP.NET app, and it ends the process successfully. Is there something involved with using the Interop libraries with ASP.NET that I've overlooked?