insert entity with bigint identity id will throw an convert excption

[yan122725529]

when select the indentity insert result ,that will convert to int32, when my id is a bitint,the program will throw an convert excption

[valfrid-ly]

It's now using long. Please check the new version

[valfrid-ly]

This commit is fixing it.

[peppy]

Unfortunately you missed the async version of this.