.NET on Remko's Blog

Redirect Registry by Modifying .NET Executable

Thu, 30 May 2013 16:18:23 +0000

Yesterday I was troubleshooting an application that was migrated to Citrix XenApp.

The application is able to use a high precision scale which is attached to the client pc's com port. This com port is redirected to XenApp.

While testing users reported several issues, let's have a look at them.

Error configuring COM Port
Within the application the comport to which the scale is connected must be configured:

After pressing "Registreer" to register the new com port the following error message was shown

Convert an IP Address to an Integer in C# in host byte ordering

Sat, 13 Oct 2012 15:18:26 +0000

Yesterday I wrote about converting an IP Address to an Integer in C#. But both methods I presented return the IP Address in network byte order.

However in some cases, especially when calling WinApi functions, you will need to convert the Integer to host byte order which is little-endian on Intel processors.

warning CS0618: 'System.Net.IPAddress.Address' is obsolete

Fri, 12 Oct 2012 13:43:21 +0000

For a call to a WinApi function I needed to convert an IP Address to an Integer in C#.

This can be done using the System.Net.IPAddress class:

text Download

using System.Net;

IPAddress ipa = IPAddress.Parse("10.4.2.91");
uint ip = (uint)ipa.Address;

Although this works, the compiler issues a warning:

Could not load file or assembly 'System.Configuration'

Wed, 18 Jul 2012 13:43:06 +0000

Today I was asked to troubleshoot an executable that didn't work correctly on Windows XP Embedded.

On startup it displayed the following message:

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Unhandled Exception: System.IO.FileNotFoundException: Could not load file or ass
embly 'System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b0
3f5f7f11d50a3a' or one of its dependencies. The system cannot find the path spec
ified.
File name: 'System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyTok
en=b03f5f7f11d50a3a' ---> System.IO.DirectoryNotFoundException: The system canno
t find the path specified. (Exception from HRESULT: 0x80070003)

I verified that System.Configuration.dll was present (in C:\Windows\Microsoft.NET\Framework\v2.0.50727).