C# PInvoke VerQueryValue returns back OutOfMemoryException?
- by Bopha
Hi,
Below is the code sample which I got from online resource but it's suppose to work with fullframework, but when I try to build it using C# smart device, it throws exception saying it's out of memory. Does anybody know how can I fix it to use on compact? the out of memory exception when I make the second call to VerQueryValue which is the last one.
thanks,
[DllImport("coredll.dll")]
public static extern bool VerQueryValue(byte[] buffer, string subblock, out IntPtr blockbuffer, out uint len);
[DllImport("coredll.dll")]
public static extern bool VerQueryValue(byte[] pBlock, string pSubBlock, out string pValue, out uint len);
//
private static void GetAssemblyVersion()
{
string filename = @"\Windows\MyLibrary.dll";
if (File.Exists(filename))
{
try {
int handle = 0;
Int32 size = 0;
size = GetFileVersionInfoSize(filename, out handle);
if (size > 0)
{
bool retValue;
byte[] buffer = new byte[size];
retValue = GetFileVersionInfo(filename, handle, size, buffer);
if (retValue == true)
{
bool success = false;
IntPtr blockbuffer = IntPtr.Zero;
uint len = 0;
//success = VerQueryValue(buffer, "\\", out blockbuffer, out len);
success = VerQueryValue(buffer, @"\VarFileInfo\Translation", out blockbuffer, out len);
if(success)
{
int p = (int)blockbuffer;
//Reads a 16-bit signed integer from unmanaged memory
int j = Marshal.ReadInt16((IntPtr)p);
p += 2;
//Reads a 16-bit signed integer from unmanaged memory
int k = Marshal.ReadInt16((IntPtr)p);
string sb = string.Format("{0:X4}{1:X4}", j, k);
string spv = @"\StringFileInfo\" + sb + @"\ProductVersion";
string versionInfo;
VerQueryValue(buffer, spv, out versionInfo, out len);
}
}
}
}
catch (Exception err)
{
string error = err.Message;
}
}
}
