What kind of source code could be written inside a dataset class?

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I have added a DataSet in my C# solution and I added a table adapter from a query and I don't know at all what kind of source code could be written inside a DataSet class and how could it be used. Does it playes a key role for creating crystal reports? May I have some examples and explanation please? Thank you, so much.

namespace AngelTechShop
{
    partial class ProductTypesPerCategoryDataSet
    {
        partial class ProductsPerProdTypeDataTableDataSet
        {
            
        }
    }
}

What I have tried:

namespace AngelTechShop
{
    partial class ProductTypesPerCategoryDataSet
    {
        partial class ProductsPerProdTypeDataTableDataSet
        {
            
        }
    }
}

Posted 30-Apr-24 8:02am

Aggeliki Asimakopoulou

Updated 30-Apr-24 8:03am

v2

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OriginalGriff · Accepted Answer · 2024-04-30T19:00:00

This isn't a question that makes any real sense as asked: the DataSet class isn't one that you would normally write any source code in - it's a class that is provided by .NET to interface between a data source and the DataTable object it returns. Yes, it can be used to provide the data for Crystal Reports, but that's not really a DataSet function - your code provides the SQL (or other data source) code to fill the DataTable / DataSet object(s) with the data you want CR to work with rather than leavign that to teh DT / DS itself.

I'd start by reading this: Creating Crystal Reports using C# with Datasets[^] and then branch out via google to find more in-depth tutorials on what exactly you are trying to achieve when you have the basics right.