DapperLib / DapperLib/Dapper

Runtime error when using DateOnly

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blocked:external feature request
Dominant language
C#
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Description

I have a database that has a date property. However, the C# class is DateOnly since I only need the date, not the time. However, when I try to use a sql command and the c# class is DateOnly, the error is something like this
The member WhatDate1 of type System.DateOnly cannot be used as a parameter value
at Dapper.SqlMapper.LookupDbType(Type type, String name, Boolean demand, ITypeHandler& handler) in /_/Dapper/SqlMapper.cs:line 426

WhatDate1 is the field name

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Research direction

Start in SqlMapper.cs around line 426, where LookupDbType rejects System.DateOnly parameters, and reproduce the reported SQL command failure. Trace the existing parameter type handling and verify that a DateOnly field such as WhatDate1 is accepted without the runtime error.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, sql
Domain
backend, databases
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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