DapperLib/Dapper.Contrib

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Dapper community contributions - additional extensions for Dapper

Stars: 293
Forks: 109
Open beginner issues: 0
Indexed issues: 146

Dominant language: C#
License: No license data
Last GitHub push: Aug 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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146 open issues indexed

Insert truncates all insert ids to integer size, but then converts it to a long on return: may I help fix it? Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

DapperLib/Dapper.Contrib#174 · Opened Dec 26, 2025
Insert method does not generate SQL suitable for PostgresSQL Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

DapperLib/Dapper.Contrib#173 · Opened Mar 8, 2025
[Question] this project still being developed? Open

Difficulty 1/5 Under an hour Newbie friendliness 10/100

DapperLib/Dapper.Contrib#172 · 1 comment · 4 reactions · Opened Feb 6, 2025
SqlMapperExtensions doesn't honor SqlMapper.TypeHandler in autogenerated primery keys when Inserting in Sql Server Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

DapperLib/Dapper.Contrib#169 · Opened Jun 24, 2024
[Question] WriteAtrribute to be inherited Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

DapperLib/Dapper.Contrib#165 · Opened Dec 13, 2023
Is Dapper.Contrib being actively maintained? Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

DapperLib/Dapper.Contrib#164 · 3 comments · 2 reactions · Opened Oct 9, 2023
Pervasive/Actian Zen (PSQL) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#163 · Opened Sep 29, 2023
Cannot use SqlMapperExentions.Table attribute on structs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#162 · Opened Sep 29, 2023
No documentation of failure states (or it is hard to find if it exists?) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#161 · Opened Sep 27, 2023
Internal Table Properties are Ignored Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

DapperLib/Dapper.Contrib#160 · Opened Sep 5, 2023
MySqlAdapter InsertAsync unexpectedly modifies entityToInsert Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

DapperLib/Dapper.Contrib#156 · 2 reactions · Opened Mar 6, 2023
Dapper.Contrib.dll not signed Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#155 · 1 comment · Opened Feb 28, 2023
Snowflake query parameters syntax is not supported Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

DapperLib/Dapper.Contrib#154 · 1 comment · Opened Feb 22, 2023
Inherited TableAttribute is ignored by CRUD operations Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

DapperLib/Dapper.Contrib#153 · Opened Dec 30, 2022
InsertAsync and Insert fail if the id is not an int Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#151 · 2 reactions · Opened Dec 20, 2022
GetAsync fails on SQL Server when the primary key property is a reserved SQL keyword Open

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

DapperLib/Dapper.Contrib#150 · Opened Dec 5, 2022
Does not work with OleDbConnection Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#145 · 1 comment · Opened Sep 13, 2022
Insert<T> return non-int Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#144 · 2 comments · Opened Sep 5, 2022
System.Data.SqlClient.SqlException: "Cannot insert the value NULL into colum..." (DateTime) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#142 · 1 comment · Opened Jul 28, 2022
IsWriteable not working on Key columns Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#141 · Opened Jul 27, 2022
Why a hard reference to the column "id" Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#140 · 5 comments · 1 reaction · Opened Jul 14, 2022
SQL Server susceptible to imlicit conversions Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#139 · Opened Jun 27, 2022
Dapper should expose a .Count<T>() method Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

DapperLib/Dapper.Contrib#138 · 2 reactions · Opened Jun 14, 2022
Scope_Identity on Insert Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#137 · 4 reactions · Opened Jun 14, 2022
Suggested Improvement to handling Insert with Db-generated primary keys Open

Difficulty 5/5 Over a week Newbie friendliness 22/100

DapperLib/Dapper.Contrib#136 · Opened Apr 30, 2022
InsertOnly and UpdateOnly idea Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

DapperLib/Dapper.Contrib#134 · 1 comment · 3 reactions · Opened Apr 8, 2022
Add the mapping strategy to support the table name and column name Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#131 · 1 reaction · Opened Mar 7, 2022
need to add Annotation for Column Name Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#129 · 1 comment · Opened Feb 17, 2022
contrib dosn`t support oracle Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#127 · Opened Feb 14, 2022
Retry option [Feature Request] Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#125 · 1 reaction · Opened Jan 26, 2022
Odbc connection issues -- Dapper Contrib 2.0.78 & Dapper 2.0.123 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

DapperLib/Dapper.Contrib#124 · Opened Jan 2, 2022
ISqlAdapter uses Convert.ChangeType for inserted Id which limits type conversion extensibility Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#123 · 3 comments · 1 reaction · Opened Dec 22, 2021
Add `List<T> GetMany<T>(List<id>)` to get items with IN clause Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

DapperLib/Dapper.Contrib#122 · 1 comment · Opened Nov 29, 2021
Table Pluralization Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#121 · 1 comment · 1 reaction · Opened Nov 22, 2021
SqlException on hidden parent property Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#120 · 2 comments · 2 reactions · Opened Nov 15, 2021
SqlMapperExtensions.cs error when Computed Id property defined where ExplictKey set on other property Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

DapperLib/Dapper.Contrib#118 · Opened Oct 27, 2021
Dapper.Contrib INSERT (list) needs the table name to be Plural with an "s" at the end Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

DapperLib/Dapper.Contrib#115 · 2 comments · Opened Oct 22, 2021
cannot handle numeric identities when they > max integer value Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

DapperLib/Dapper.Contrib#113 · 1 comment · Opened Oct 7, 2021
placeholder error with oracle Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#111 · Opened Sep 14, 2021
Errors testing Dapper.Contrib when used with the Dapper.StrongName pacakge. Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

DapperLib/Dapper.Contrib#108 · Opened Jun 8, 2021
Insert always returns int. What about int64 id columns? Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

DapperLib/Dapper.Contrib#107 · 1 comment · 2 reactions · Opened May 20, 2021
Dapper.Contrib Suggest to add InsertOrUpdate Functions Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#3 · 3 comments · 1 reaction · Opened Apr 16, 2021
修复 Dapper.Contrib.Extensions 中 Insert 方法，此方法返回值为long类型，但内部各类型数据库获取自增ID，都是转换为int32，当ID超过超过Int32（2147483647）时，出现bug。 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#4 · 4 comments · 2 reactions · Opened Apr 7, 2021
Dapper.Contrib cannot handle GUID primary keys & SqlMapperExtensions.Insert<T> has wrong usage int & long Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#5 · 9 comments · 1 reaction · Opened Mar 22, 2021
InsertAsync returning 0 as Id on a class that has ExplicitKey attribute on Id Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#90 · 1 comment · Opened Mar 18, 2021
Dapper.Contrib operations should accept an optional table name Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

DapperLib/Dapper.Contrib#8 · 1 comment · Opened Feb 5, 2021
Does internal type property ignored? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#104 · 1 comment · Opened Feb 2, 2021
SqlMapperExtensions.Get doesn't work on netcore2.2 in Linux platform Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

DapperLib/Dapper.Contrib#1 · 1 comment · Opened Jan 15, 2021
Replace annotations with fluent configuration Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

DapperLib/Dapper.Contrib#92 · 2 reactions · Opened Jan 14, 2021
What is the proper way to contribute to Dapper.Contrib Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

DapperLib/Dapper.Contrib#9 · 1 comment · Opened Nov 5, 2020

DapperLib/Dapper.Contrib

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