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.NET Forum / .NET Framework / .NET SDK / November 2003can not get type of class inside System.Data
I can not get the type of the classes inside Data namespace by using the Type.GetType() method It throws the following exception An unhandled exception of type 'System.TypeLoadException' occurred in datatier.dll Additional information: Could not load type System.Data.SqlClient.SqlCommand from assembly DataTier, Version=1.0.1419.27277, Culture=neutral, PublicKeyToken=null. How come? >I can not get the type of the classes inside Data namespace by using the >Type.GetType() method What does your code look like? And why aren't you using the typeof operator (or GetType if you're using VB.NET)? Mattias  SignatureMattias Sjögren [MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ Please reply only to the newsgroup. I want to dynamically instantiate a class is it that we can not get type of a Sealed Class? > >I can not get the type of the classes inside Data namespace by using the > >Type.GetType() method [quoted text clipped - 3 lines] > > Mattias >is it that we can not get type of a Sealed Class? No, getting the type of and instantiating a sealed class should be no problem. Mattias SignatureMattias Sjögren [MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ Please reply only to the newsgroup. i cant get the type by using this statement Type t = Type.GetType(System.Data.OleDb.OleDbCommand); it return null to me > >is it that we can not get type of a Sealed Class? > > No, getting the type of and instantiating a sealed class should be no > problem. > > Mattias >i cant get the type by using this statement >Type t = Type.GetType(System.Data.OleDb.OleDbCommand); >it return null to me That code shouldn't even compile. I assume you had the type name as a string. The reason it returns null is that Type.GetType only looks in Mscorlib.dll and the calling assembly by default. To make it look in some other assembly (System.Data.dll in this case) you have to pass it the full type and assembly name "System.Data.OleDb.OleDbCommand, System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" But if you have System.Data.dll referenced, it's easier to just use the typeof() operator. Mattias SignatureMattias Sjögren [MVP] mattias @ mvps.org http://www.msjogren.net/dotnet/ Please reply only to the newsgroup. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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