469,602 Members | 1,920 Online
Bytes | Developer Community
New Post

Home Posts Topics Members FAQ

Post your question to a community of 469,602 developers. It's quick & easy.

Type.GetType("System.Drawing.Point")) error...

I'm building a dataset that writes out a Point type value.
Here's the code that I've got:

1 Dim dsContent As DataSet = New DataSet("content")
2 Dim dtAsset As DataTable = New DataTable("asset")
3 Dim dcPk(0) As DataColumn
4 dcPk(0) = _
5 dtAsset.Columns.Add("fullName", Type.GetType("System.String"))
6 dtAsset.Columns.Add("videoLocation",
Type.GetType("System.Drawing.Point"))
7 dtAsset.Columns.Add("videoSize", Type.GetType("System.Drawing.Size"))
8 dtAsset.PrimaryKey = dcPk 'define primary key for this table
9 dsContent.Tables.Add(dtAsset)

The code compiles just fine but always blows up on line #6 stating:

An unhandled exception of type 'System.ArgumentNullException'
occurred in system.data.dll
Additional information: 'dataType' argument cannot be null.

How any idea what the problem is here and how to correct it?
Jan 25 '06 #1
5 4030
By default Type.GetType searched for requested type in mscorlib and in
executing assembly. You have to provide assembly qualified type name,
like

Type.GetType("System.Drawing.Point, System.Drawing, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")

Jan 25 '06 #2
How any idea what the problem is here and how to correct it?


The problem is that you have to specify the fully qualified type name
which includes the assembly name.

If you have a reference to System.Drawing.dll use the GetType operator
instead.

dtAsset.Columns.Add("videoSize", GetType(System.Drawing.Size))
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.
Jan 25 '06 #3
Thanks that seems to work for me... where can I find the fully qualified type
name for other types... (like Size, etc.)...

"Vladimir Matveev" wrote:
By default Type.GetType searched for requested type in mscorlib and in
executing assembly. You have to provide assembly qualified type name,
like

Type.GetType("System.Drawing.Point, System.Drawing, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")

Jan 25 '06 #4
if you have references to assemblies where these types are located, it
will be easier to use typeof() operator

Jan 25 '06 #5
Nope, I don't have refs to the assemblies where these types are located...

Is there an easy way to obtain/determine the fully qualified type name for a
specified type (i.e. Point, Size, etc.)

Thanks for your help!

"Vladimir Matveev" wrote:
if you have references to assemblies where these types are located, it
will be easier to use typeof() operator

Jan 25 '06 #6

This discussion thread is closed

Replies have been disabled for this discussion.

Similar topics

2 posts views Thread by Patrick Olurotimi Ige | last post: by
10 posts views Thread by James Stroud | last post: by
reply views Thread by Manuel | last post: by
reply views Thread by suresh191 | last post: by
By using this site, you agree to our Privacy Policy and Terms of Use.