interop

问题 I don't have very much background regarding COM nor coclasses, so I don't quite understand why I can use the new operator with an interface. From a language/framework-agnostic view, it's confusing why this compiles and runs correctly: using Microsoft.Office.Interop.Excel; public class ExcelProgram { static void Main(string[] args) { Application excel = new Application(); } } Inspecting Application in Visual Studio 2010 shows me: using System.Runtime.InteropServices; namespace Microsoft.Office

问题 I have a serialized SOAP request message with a SAML token holder-of-key that works against a vendor service. I want to create a demonstration program in C# to produce a similar request. To do this, I want to write a client that creates its own SAML token. I've got a SAML2 token created successfully from a self signed cert and I am able to associate it to the request using the ChannelFactoryOperations.CreateChannelWithIssuedToken approach (.Net 4.0). Everything is working great but I can't

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to properly clean up Excel interop objects in C# I've this function that I use to calculate the linear trend of some data: private string Trend(object conocido_y, object conocido_x, object nueva_matriz_x) { string result = String.Empty; try { Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application(); result = ((Array)xlApp.WorksheetFunction.Trend(conocido_y, conocido

问题 I am trying to create a table with a header. I want this header to be repeated for each new page that the table takes. How can I do this in C# with Word 2007 Interop? 回答1: Microsoft.Office.Interop.Word.Table table; /* ... */ table.Rows[1].HeadingFormat = -1; 回答2: This is what word for me, Looping through each table at the end foreach (Table item in doc.Tables) { item.Rows[1].HeadingFormat = -1; item.ApplyStyleHeadingRows = true; } and setting a style on each table with the property set to

问题 We have developed a .NET Assembly that stores language translation information and it needs to be consumed by a VB6 application. We would like to be able to change the translation information without having to recompile the application. The translation is provided by a two-file partial class called LanguageServices. One file is non-changing library methods, the other is all auto generated properties from a resx file and the regx is generated from a database of language translation information

问题 It is my understanding (and please correct me if I'm wrong) that the only difference between them is whether the string might be modified by the called function. (PCWSTR , LPWSTR) I am now trying to pass a string from C# to a function expecting a PCWSTR , but all I can find is [MarshalAs(UnmanagedType.LPWStr)] . Am I correct that that is fine? (Yes, it works . That, though, is not a proof that it's fine. Some things work but then cause memory leaks etc.) 回答1: PCWSTR is a time anachronism,

问题 Here I'm opening excel and writing to excel sheet. I'm changing my windows application to asp website and seen this error. I have added all the references and libraries. Don't know what I am missing here. Getting error as mentioned below. Please help me. Excel.Application excel = new Excel.Application(); excel.Visible = false; // to hide the processing Excel.Workbook wb = excel.Workbooks.Add(); Excel.Worksheet sh = wb.Sheets.Add(); // Error at wb sh.Name = "Links"; for (int i = 1; i < list

问题 What is the troubleshooting process for the "Retrieving the COM class factory for component with CLSID {XXXX} failed due to the following error: 80080005" errors in .Net? To clarify: I am getting this at runtime, on my XP machine, with client being .net code running under admin account. {XXXX} refers to one of our in-house COM components. From what I understand, 0x80080005 refers to "permission denied", but where do I go to check/change the permissions? Or am I completely wrong here, and the

问题 What is the troubleshooting process for the "Retrieving the COM class factory for component with CLSID {XXXX} failed due to the following error: 80080005" errors in .Net? To clarify: I am getting this at runtime, on my XP machine, with client being .net code running under admin account. {XXXX} refers to one of our in-house COM components. From what I understand, 0x80080005 refers to "permission denied", but where do I go to check/change the permissions? Or am I completely wrong here, and the

问题 When using COM boolean values are to be passed as VARIANT_BOOL which is declared in wtypes.h as short . There are also predefined values for true and false : #define VARIANT_TRUE ((VARIANT_BOOL)-1) #define VARIANT_FALSE ((VARIANT_BOOL)0) Which is the best way to convert from VARIANT_BOOL to C++ bool type? Obvious variants are: compare with VARIANT_FALSE simply cast to bool Other ways can be easily invented. Which is the best way to do this - most readable, most standart-compliant, least prone