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[Source] System.MissingMethodException: 找不到方法:“Void Dapper.DynamicP...

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Posted on 4/22/2019 12:16:25 PM | | | |
Unhandled exception: System.MissingMethodException: Method not found: "Void Dapper.DynamicParameters.Add(System.String, System.Object, System.Nullable'1<System.Data.DbType>, System.Nullable'1<System.Data.ParameterDirection>, System.Nullable`1<Int32>, System.Nullable`1<Byte>, System.Nullable`1<Byte>)”。


Error cause,The Dapper version is too low, because I installed the DapperExtensions component directly with the nuget command, and did not install Dapper, because I knew that DapperExtensions dependent on Dapper would automatically install Dapper for me, as follows:

Dapper 1.12.0 is being installed.
Adding package "Dapper.1.12.0" to folder "C:\project\my\itsvse\packages"
Package "Dapper.1.12.0" has been added to folder "C:\project\my\itsvse\packages"
Added package "Dapper.1.12.0" to "packages.config"
"Dapper 1.12.0" has been successfully installed to itsvse. Translate
  OKhttps://api.nuget.org/v3-flatcon ... ensions.1.6.3.nupkg19182 milliseconds
DapperExtensions 1.6.3 is being installed.
Adding package "DapperExtensions.1.6.3" to folder "C:\project\my\itsvse\packages"
Package "DapperExtensions.1.6.3" has been added to folder "C:\project\my\itsvse\packages"
Added package "DapperExtensions.1.6.3" to "packages.config"
"DapperExtensions 1.6.3" has been successfully installed to itsvse. Translate
The nuget operation took 19.59 sec
Time Elapsed: 00:00:41.1359161


Dapper 1.12.0.0 was released on 9/19/2012, and the version is too old.

Solution, update the Dapper version with the following command:

(End)




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