Programming Forums > Application Development > C#

kurifu · Jun 2nd, 2005, 2:33 AM

I am using a bit of code in C# to write a simple string value to the registry with very very little luck, it keeps trowing an exception every single time saying I do not have write access to the registery, or it can not write to the registry (I forget extactly)... this is the offending code:

(Toggle Plain Text)

RegistryKey registryKey = Registry.CurrentUser;
registryKey - registryKey.OpenSubKey( @"Software\CrDev Consulting\WinVOBGlue\" );
registryKey.SetValue(  "tempdir", this.temporaryDirectory.Text );
registryKey.Close( )

the tempdir value already exists within the registry, basically all I am doing is overwriting it, I tried deleting it first but as soon as Delete is called it says that it can not write the registry... is there something I am doing wrong here?

Any ideas as to what could be causing this error? I am running the application as an administrator, and it can read the value without any problems... but since it is HKCU there should be no problems, even if I am not the administrator when writing to this key.

Any help would be greatly appreciated.

kurifu · Jun 2nd, 2005, 3:06 AM

Oh yeah, I feel dumb for this one.... the problem is actually with OpenSubKey( "..." ); This function is overloaded and that is the ReadOnly form of the function... OpenSubKey( "...", true ); is how the function is called to open the key with write permissions.. took me an entire day to figure this one out, lol.

BlazingWolf · Jun 2nd, 2005, 12:03 PM

Just need to make sure what you have is exactly like the examples. They almost always work. :p

kurifu · Jun 4th, 2005, 10:14 PM

Actually I failed to realize that the problem was with that function to begin with. i thought it was a permission problem or a problem with the set value function. It was not until I did a bit of searching though google that I saw an example that used a second value for the OpenSubKey function, and then it all made sense.

Jun 2nd, 2005, 2:33 AM	#1
kurifu Expert Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia (Canada) Posts: 784 Rep Power: 5	Exception writing to registry... why? I am using a bit of code in C# to write a simple string value to the registry with very very little luck, it keeps trowing an exception every single time saying I do not have write access to the registery, or it can not write to the registry (I forget extactly)... this is the offending code: (Toggle Plain Text) RegistryKey registryKey = Registry.CurrentUser; registryKey - registryKey.OpenSubKey( @"Software\CrDev Consulting\WinVOBGlue\" ); registryKey.SetValue( "tempdir", this.temporaryDirectory.Text ); registryKey.Close( ) RegistryKey registryKey = Registry.CurrentUser; registryKey - registryKey.OpenSubKey( @"Software\CrDev Consulting\WinVOBGlue\" ); registryKey.SetValue( "tempdir", this.temporaryDirectory.Text ); registryKey.Close( ) the tempdir value already exists within the registry, basically all I am doing is overwriting it, I tried deleting it first but as soon as Delete is called it says that it can not write the registry... is there something I am doing wrong here? Any ideas as to what could be causing this error? I am running the application as an administrator, and it can read the value without any problems... but since it is HKCU there should be no problems, even if I am not the administrator when writing to this key. Any help would be greatly appreciated. __________________ Clifford Matthew Roche <geek@cliffordroche.com> Web Hosting: http://www.crd-hosting.com Consulting: http://www.crdev-consulting.com

Jun 2nd, 2005, 3:06 AM	#2
kurifu Expert Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia (Canada) Posts: 784 Rep Power: 5	Oh yeah, I feel dumb for this one.... the problem is actually with OpenSubKey( "..." ); This function is overloaded and that is the ReadOnly form of the function... OpenSubKey( "...", true ); is how the function is called to open the key with write permissions.. took me an entire day to figure this one out, lol. __________________ Clifford Matthew Roche <geek@cliffordroche.com> Web Hosting: http://www.crd-hosting.com Consulting: http://www.crdev-consulting.com

Jun 2nd, 2005, 12:03 PM	#3
BlazingWolf Hobbyist Programmer Join Date: Sep 2004 Posts: 207 Rep Power: 5	Just need to make sure what you have is exactly like the examples. They almost always work. :p __________________ _______________________________ BlazingWolf

Jun 4th, 2005, 10:14 PM	#4
kurifu Expert Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia (Canada) Posts: 784 Rep Power: 5	Actually I failed to realize that the problem was with that function to begin with. i thought it was a permission problem or a problem with the set value function. It was not until I did a bit of searching though google that I saw an example that used a second value for the OpenSubKey function, and then it all made sense. __________________ Clifford Matthew Roche <geek@cliffordroche.com> Web Hosting: http://www.crd-hosting.com Consulting: http://www.crdev-consulting.com

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Programming Forums > Application Development > C#

Exception writing to registry... why?