Mandatory parameters, Dapper and System.Data.SqlClient.SqlException

Question

I am using Dapper to call a stored procedure which have a mandatory parameter @idProject

this is my code fragment:

using (var c = _connectionWrapper.DbConnection)
      {
        var result = c.Query<Xxx>("dbo.xxx_xxxGetPage", new { @idProject = 1 }).AsList();
        return result;
      }

Should work but raise an exception:

An exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll but was not handled in user code

Additional information: Procedure or function 'xxxGetPage' expects parameter '@idProject', which was not supplied.

Why?

Answer 1

我认为你错过了CommandType。

using (var c = _connectionWrapper.DbConnection)
{
    var result = c.Query<Xxx>("dbo.xxx_xxxGetPage", new { idProject = 1 }, commandType: CommandType.StoredProcedure).AsList();
    return result;
}

默认情况下，dapper使用Text。

https://github.com/StackExchange/dapper-dot-net

Answer 2

试试这个：

var result = c.Query<Xxx>("dbo.xxx_xxxGetPage", new {1}).AsList();