linq實現左連接
1、左連接： var LeftJoin = from emp in ListOfEmployees join dept in ListOfDepartment on emp.DeptID equals dept.ID into JoinedEmpDept from dept ...
原文：Linq to DataTable 左連接
所先創建 個DataTable並對其賦值,來進行模擬. DataTable dt new DataTable dt .Columns.Add ID , typeof int dt .Columns.Add Name , typeof string dt .Columns.Add GradeId , typeof int DataTable dt new DataTable dt .Columns. ...
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