Could not get type information for 'dataset'

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Could not get type information for 'dataset'

jsparks228 6

This question has been asked by others, but I do not see an answer to any of them other than using reserved words in the db. That is not my case. The other questions are asked without details, so let's document my issue completely.

When trying to add a Data Source to my project using the Data Source Config Wizard, I get the error "Could not get the type information for 'DataSet'. I am using the Northwinds sample DB for testing. I have already used this same method to add one dataset and now this one refuses to cooperate.

Visual Studio Professional 2022-LTSC, C#

The process used to add the dataset is listed as follows:
Use the add Data Source wizard

Select DataBase and then DataSet options

add connection to Northwind DB

I only want to add the stored procedures, so I select them

Hit finish and that's when I get this.

This is the same process that I used when starting my project and was able to connect to the database that I actually need for my project. The Northwind connection is just a test after I began receiving the failure when trying to add the second db connection to my project, same error. This happened once already, and I had to complete start over. Luckily, I hadn't done any code then... now is a different story. I need to understand why this is happening before I have to blow my project away.

Any help is greatly appreciated!

Additionally, the ability to preview data from a DatSet that is already in the project has been hosed!? It gives the same error.

Jack J Jun 25,296 Reputation points

2022-12-08T05:36:11.793+00:00

@jsparks228 , Welcome to Microsoft Q&A, what is your current project, is .net core project or .net framework project? I tested it in a .net framework 4.8 console app and it worked well. Also, I noted that others who meet the problem used the .net core app, did you .net core app as well?
jsparks228 6 Reputation points

2022-12-08T16:03:14.493+00:00

Thanks for the welcome! Current project is .net framework. I have had this happen in two separate projects. Works fine if I start a new project or test in other projects, but the current project I am working in has broken this ability and no hope so far in understanding why. Could I go in and manually configure the type information?

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Jack J Jun 25,296 Reputation points

2022-12-08T05:36:11.793+00:00

@jsparks228 , Welcome to Microsoft Q&A, what is your current project, is .net core project or .net framework project? I tested it in a .net framework 4.8 console app and it worked well. Also, I noted that others who meet the problem used the .net core app, did you .net core app as well?
jsparks228 6 Reputation points

2022-12-08T16:03:14.493+00:00

Thanks for the welcome! Current project is .net framework. I have had this happen in two separate projects. Works fine if I start a new project or test in other projects, but the current project I am working in has broken this ability and no hope so far in understanding why. Could I go in and manually configure the type information?

Answer 1

Found hope in saving my project.

In another post I found a thread about changing your application target framework and it would resolve the issue. Tried that and although I am getting the error, the dataset appears when I rebuild the project and seams to work fine returning data.

Initial Target framework was 4.7.2, went to 4.8 and tested. Received the error like before but when I did a rebuild, it was in the data sources. Now I am wondering if just doing the rebuild would have resolved it.

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Could not get type information for 'dataset'

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