Question

I am filling a dataset from a SQL server database using SqlDataAdapter in C# 4.0. Is there a way so that I can be able to provide an alternate mapping for the GUID DBDataType to String.

I need the GUID’s to be interpreted as string in the resultant datatable, so if there can be a mapping which automatically sets the GUID to String i can consume that feature, else i have to recreate the datatable and populate the values using linq or other methods, which will be a performance hit

Answer 1

I haven’t seen a way to do a mapping like this with the ADO.NET classes. Instead of trying to map from one data type to another in the SqlDataAdapter, you could modify your query to convert the uniqueidentifier to varchar:

select cast(YourGuidColumn as varchar(36)) as YourGuidColumn, ...